08 Impala 3.5l Engine Gasket Diagram

Chevrolet Impala repairs by problem area

Engine (34%)

Transmission and Drivetrain (9%)

Brakes and Traction Control (6%)

Suspension and Steering (19%)

Electrical and Air Conditioning (23%)

Paint, Rust, Leaks, Rattles, and Trim (5%)

Other (4%)

Chart based on 834 repairs.

See TSBs and recalls for the Chevrolet Impala.

Chevrolet Impala engine repair cost distribution

$2500+ (2%)

$1000 - $2499 (9%)

$500 - $999 (11%)

$100 - $499 (46%)

< $100 (32%)

Chart based on 257 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

29140 mi

Oil leak front engine cover (timing cover)

12000 mi

Oil leak. Thought it was the oil plug. Not. Timing cover gasket leaking at tee joints.. Removed timing cover and reseal..

95000 mi US $226

Check engine light on, purge valve failed, needed replaced

69000 mi

Replace evap solenoid; Replace intake air ducting

4960 mi	Oil Leaking from oil pan
10540 mi	Fuel System issue with regards to computer.

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20000 mi	rocker arm solenoid.
44000 mi US $80	Check engine lite indicated secondary air less than expected. Replaced 3 way sec. air injection valve.
46000 mi	Secondary air injection system was carboned badly. Tech needed to physically clean out the ports.

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80000 mi US $690

Discovered front engine cover leaking. Known issue, covered by GM. Also replaced timing chain & water pump and new front brake rotors. Timing chain & rotors paid for by me.

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33000 mi

Car defaulted to safe mode. The fuel injector control and the injectors were replaced under warranty.

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109564 mi US $40

Upper radiator hose and both bypass hoses under it replaced

89900 mi C $350	Replaced resonator
124000 mi C $280	Temperature Sensor [coolant] replacement again.

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169000 mi US $1000

Evap Canister Replaced. Engine light still on.

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56000 mi

replaced head gaskets, rack and pinion and oil pan gasket

73532 mi

check engine light on-code set for engine right side running rich-reset light-no repair done-told to drive vehicle and see if check engine light comes back on-drove for 3 days-cel came back on-went out on its own after one day.For two months was using mid grade gasoline-was told by mechanic-vehicle built to use regular gasoline only

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82000 mi US $107

Oil pressure switch- sensor went bad

112000 mi US $300	Relay switch for radiator fan was bad.
156000 mi US $90	Replaced oil pressure sensor.
182000 mi US $160	O2 sensor

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80000 mi US $334

Replaced EVAP system solenoid purge valve located next to the fuel filler neck.

141000 mi US $370	Leaking coolant, replaced "cross over" gaskets.Note, all 07 & 08 Impalas have major rear suspension problem, ruins rear tires. Class action suit, see USA Today, 7/06/11, page 4B.
148000 mi US $350	check engine light came on again replace solenoid in evaporation tank. replace oxygen sensor.
249000 mi US $1033	Replace failed fuel pump & sensor

198400 mi C $120

water pump bearing packed it in

19940 mi

Engine crankshaft seal leaking oil. Power steering return line leaking fluid. Both repaired by dealer under warranty.

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56000 mi US $128	Emissions error, fuel system. Replaced gas cap again with new one.
57000 mi US $130	emissions error, diagnostics, replaced fuel cap AGAIN

87900 mi	Had a coolant leak that was hard to track down.Looked like it was coming from the rear head gasket.took it to my local dealer to have it diagnosed.Turned out to be o rings on coolant crossover tube.Fixed under warranty.I'm happy
111000 mi US $1500	rear head gasket leaking.replaced both head gaskets.started out with a slight rise in temp.then a good size leak right after car was turned off.didnt notice any tell tale white exhaust or smell burning oil.very expensive.not happy
130000 mi US $80	check engine light said "emissions leak large." it was the evap solenoid next to gas tank. one bolt and twenty minutes later i was done. wish all repairs were this easy.
165000 mi US $72	dash warning came on with "engine reduced power"and traction warning light came on.turns out it was the gas pedal which has electrical position sensor.it cost 72.00 and took ten minutes for me to replace.just two bolts and one plug.easy job

61000 mi US $200

Check Engine light Diagnosed as Failed cannister vent solenoid. Dealer performed repair while car was on lift of oil change. Very satisfied with dealer not with car reliabilty

38200 mi US $80

Running 1.5 quarts low on oil. Sensors checked out ok. Oil change and filter. Monitoring oil level for next 3 to 4 weeks before any further repair.

61000 mi

Some sensor in the exhaust system failed. Replaced in about 15 minutes. Covered under GM Majorguard extended warranty

34000 mi US $312

Check engine light came on. Took it in to the dealer. Dealer ended up replacing the vent solenoid and the harness for it.

62620 mi C $297	Initial difficulty refueling vehicle, few days later check engine light set, diagnosis cost $109.95, replaced evap. vent solenoid, part cost $97.95 plus labor. Dealer advised not covered under emission warranty as 96,691 km. at time.
109120 mi C $148	front crankshaft seal leaking, oil ruined front motor mount,
124620 mi C $268	check engine light and message reduced power,service traction control. scanned,codep2138. replaced accelerator pedal position sensor(app sensor).
129520 mi	check engine light now on ,appears evap. canister solenoid again (second time). will replace myself.

65000 mi US $400	Vapor canister
70000 mi US $250	Muffler

69000 mi

Engine leaking coolant

119000 mi US $100

Air pump failed

110000 mi US $85	Had to replace gasket between oil filter housing and engine block
138700 mi US $165	Engine Oil Pressure sensor went bad.
149000 mi US $600	An oil leak was not fixed.

67200 mi US $18

Took car for oil leak on manifold and heads. Dealer said no oil leak but antifreeze leak from filler neck. They changed gasket under powertrain warranty

99700 mi C $300

gas pedal sensor

69000 mi US $215

An inexpensive air sensor would trigger the engine warning light on occasion. My mechanic assured me it was safe to drive even when light was on.

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32240 mi C $100

Check engine light came on. Was told it was an engine sensor. Pair $100 deductible under extended GM warranty.

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81142 mi US $365	antifreeze leak, replaced water cross over gaskets
84283 mi US $176	oil leak, oil filter adapter gasket engine light, no 3 cyl mode, remote start not working, preplaced oil pressure sensor
88259 mi US $417	engine light on, replaced spark plugs and wires as well as air filter, clean injectors
92000 mi US $220	crank case seal oil leak engine mount replaced as well as front crank case oil seal and transmission cooler line fittings
101371 mi US $140	engine light on, remot start not working, oil pressure sensor replaced for the second time oil leak, replaced front crank case seal
105143 mi US $231	Engine running hot. Replaced thermostat
128000 mi US $120	There is a misfire on cylinder one. I've chosen not to repair it for now. The Chevy dealer says it is in the valve . . . best case scenario- a spring, but likely it's deeper in and the cost will be over $1500 to repair.

43200 mi	Leaking crankshaft timing cover seal, repair performed under powertrain warranty.
66500 mi	Coolant Crossover Gasket

108500 mi US $50	Replaced water pump
115000 mi US $220	Rough idle, dealer said it was coolant sensor, replaced and problem still there, dealer said injectors, problem still there
118000 mi US $200	Bad MAF sensor
123000 mi	Rough idle still occasionally present when sold. Was better and then back and then better and then back, no explanation.

42000 mi

check engine light on emissions system evap sensor bad

90000 mi US $40

Check engine light came on. Engine ran normally. Remote start did not work. Scanned codes and found oil pressure sensor defective. Bought tool to replace sensor and new sensor. Replaced sensor and corrected both problems.

64000 mi	had to replace muffler. If I would have paid it would have cost $1100. Service rep felt that this should not have happened and got Chevrolet to pay for repair using my extended warranty.
66000 mi	replace water pump it was leaking

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75000 mi US $450

replace the water pump, serpentine belt and refill antifreeze.

63000 mi US $358

Emission system valve fault. Replaced along with gas cap which I knew needed to be replaced as it did not lock securely anymore.

122000 mi US $800

Intake manifold gasket leak. They also replaced the water pump at the same time.

109000 mi US $50

Oil pressure sending unit failure Evap solenoid replaced

194000 mi US $1400

Valve cover gasket leaking oil on starter caused starter time die. Replaced valve cover gasket and starter.

36000 mi	Antifreeze bubbles violently after street traffic driving with AC on. Antifreeze is going low in a week. Warning lights flash and info- panel says turn off air conditioning. Not fixed - Antifreeze still goes low too fast when using Air Cond Left the car two days. Problem could not be duplicated. I was given instructions on how/when to add antifreeze. Antifreeze is disappearing. I guess due to violent bubbling after driving in street traffic with air conditioning on.
37000 mi	Antifreeze disappearing.
49000 mi	Check Engine Light and Runs Rough. Found Intake Valve Seat on Cylinder 5 dropped. Piston was gouged&broken. Head Gouged & Valve Damaged. Cylinder Wall scored with gouges. Instructed to replace engine Assembly under 5year 100,000 warranty

59000 mi	Evap solenoid replaced
84000 mi US $194	Alerted by dashboard warning message "Low Oil Level" Replaced Crank Seal.
93000 mi US $207	Ck engine light. Replaced solenoid and pigtail.
137000 mi US $20	Gas line nearly worn through from rubbing on adjacent part(s). Replaced tubing.

138000 mi US $1400	crank arm seal and oil pan gasket
141000 mi US $800	crank arm sensor

70000 mi US $100

Had Solenoid Sensor replaced

99900 mi	Water pump replaced at 99,700 miles, 300 miles away from the 100K warantee expiration. Performed by dealership.
184000 mi US $200	oil leak at filter housing

52000 mi US $672

Secondary air injection pump failure,air injection air check valve failure,both items replaced by dealer.

89000 mi US $135	Wouldn't heat even though engine was warm. first attempt failed, took it to another shop and they fixed it right for 1/3 the cost. there was a bubble in the cooling system preventing hot coolant from getting to the heater core.
110000 mi US $1500	Replaced plugs, thermostat, battery, other routine maint.

90800 mi US $450	Coolant leaking. Shop replaced some gaskets, charged for four hours time.
110000 mi US $150	New muffler
85000 mi	Slow oil leak

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48980 mi C $348

Coolant crossover pipe Gaskets replaced $78 for parts $270 for labour.

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82000 mi US $500

Vehicle DIC (Driver Info Center) displayed "Engine Hot / A/C Off" and temp gauge dropped to zero. With no temp gauge, it was decided it was best to have it towed. Dealer replaced: Temp sensor Returned 2 week later for reflash of computer.

241000 mi US $36

Replace oil pressure sending unit

98000 mi US $800

Bad sensors; replaced

70600 mi US $175

Fixed oil leaks that showed up during year three.

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61000 mi US $200

Water pump failed causing the drive belt to shred.

35000 mi	Head gasket was leaking not allowing hot air to blow and defrost the windshield.
65000 mi US $30	Cooling line fitting.
70000 mi US $375	Water pump replaced. Serpintine belt replaced.
77000 mi US $250	Thermostat replaced

84200 mi US $183

Waterpump replaced at 83000 miles

17730 mi	Emission canister vent solenoid-Replaced under Warranty
33200 mi C $1130	Water pump and coolant crossover gaskets developed bad leak aand were replaced with all cost paid by owner.

38000 mi US $900

Check engine light on (then off, then back on) plus sporadic warnings to tighten gas-cap - which was tight! Needed new sensor(s) .

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94700 mi	Radiator was flushed and new coolant was added. The shop instructed me to drive around and carefully monitor it. They said that I MAY need a new radiator.
98000 mi US $350	The water pump was leaking, causing a coolant leak and it was replaced.
117000 mi	Oil leak around the oil filter. Persisted through many oil changes. Learned just before car sold that only would have cost about $150 to fix.

140740 mi C $120

damaged wire to transmission sensor

64800 mi	Car would not heat while in idle, we bled the hoses from the heater core and it fixed the problem.
68000 mi US $120	Had to replace water pump.

100000 mi US $180

water pump leaking coolant

87200 mi US $450

Replaced cooling pump and drive belt due to leak

500 mi

Replacement of heater lines as part of TSB for reduction of noise coupled into cabin from EVAP Purge Valve operation. Prior to this repair a tapping noise could be heard though the firewall when the EVAP Purge Valve was activated. This noise was just a

209000 mi US $360

replace exhaust pipe and mufflers

120000 mi US $630

Replaced water pump

1520 mi

1. Key could not be removed from ignition - replaced actuator plunger assembly. 2. Squealing Front Pass Door Window - needed to be reset on track and lubed.

34000 mi

Car experienced massive coolant loss. Noticed coolant covering engine and underside of hood. Saw Dex-cool running down the back of the fan/radiator. Dealer pressure tested cooling system and replaced water pump under warranty. Seems OK after repair.

80000 mi US $172	Check valve for fuel tank vent replaced. Onstar diagnosed
114000 mi US $450	Water pump leaking, serpentine belt and upper and lower radiator hoses also replaced preventively
152000 mi US $485	WATER PUMP SEIZED

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151000 mi US $100

the accelerator sensor was bad

63000 mi US $3200

overheated, blown headgasket

183000 mi US $75

Water pump leak. Replaced pump.

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139000 mi US $500

Car quits upon starting, replaced throttle position sensor. Problem persists.

75700 mi US $175	Water pump leaking- replaced
82600 mi US $60	heater not blowing hot, coolant flushed, heater core backflushed and replaced dexcool with universal coolant
87000 mi US $275	Replaced heater core- flushing did not resolve no heat problem, only lasted for a short time. Heater core plugged.
110000 mi US $350	Oil pan gasket leaking- replaced
117300 mi US $615	Intake manifold gasket leaking, plastic elbows by intake manifold leaking

102000 mi US $43	Exhaust resonator was replaced
134000 mi US $311	Serpentine belt replaced
134500 mi US $1460	Upper and lower intake coolant leak. Replaced intake manifold, gaskets, spark plugs & wires, coolant elbows, thermostat, coolant flush and oil change.

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185000 mi US $400

fuel regulator leaking serpentine belt replaced

150000 mi US $150	Fuel filter was replaced
155000 mi US $160	Harmonic Balancer and Serpentine Belt replaced.

123000 mi US $3000

Heads gasket Seals leaked causing the heads to be warped. All the sensors bad 2 times  And the motor & tranny mount have both been broken causing the tranny to slip.

25000 mi

Bad serpentine belt. Covered under warranty.

142000 mi US $1000

Catalytic converter replaced. TSB.

73000 mi US $51	Replaced leaking fuel pressure regulator.
73729 mi US $600	Gas pressure regulator and fuel pump Hard starting. Replaced fuel pressure regulator, then fuel pump. Replaced fuel pressure regulator again, problem solved.

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140000 mi US $10

heater core went out, took 6 hrs todo it key got stuck in ignition, replaced lock cylinder and ignition coolant leak, found huge crack in the reservoir wiring harness under hood had been rubbing against belt which lead to a wiring mess and nothing working properly in car

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4000 mi US $50

unreliable as to when car starts properly, fixed with new ignition chip

91200 mi US $65	Replaced factory exhaust resonator.It was separated along the top seam. The remainder of the system was still in good condition
100000 mi US $100	plastic elbows from water pump to heater hoses ruptured blowing coolant all over engine

162000 mi US $600

Resonator part of the exhaust system was replaced due to hole in it which made for loud noise.

131800 mi

Security problem. Computer not recognizing ignition key. Could not start car. Both computers replaced at my expense by Chevy dealer.

94000 mi

Bad fuel injector.

100000 mi US $150

RESONATOR REPLACED

110000 mi

Vehicle died in driveway, until then no symptoms, towed again to repair shop. Diagnosis, small misfire caused catalytic converter to die,cat changed, plugs and wires replaced. Ran perfectly until the fuel pressure valve died. Again replaced .

94000 mi US $11

The typical 3800 plastic coolant elbows were cracked & leaking, we'll one was. Dealer wanted $300, I replaced them with aluminum ones from NAPA for $11.

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62000 mi US $400

Car needed new coolant hoses and a transmission flush.

65100 mi

car would not start. Good bat. Dealer could not duplicate. This is intermittent.

76000 mi

Problem with Dexcool gelling, went in for flush noticed that water pump had evidence of leaking. R&R water pump and thermostat while having complete system flush to get rid of gelled dexcool. Check engine light, code leaky fuel vapor system. Diagnosed as possibly due to aftermarket locking gas cap.

36066 mi	Lower transmission cooler line slight leaking from pressed crimped metal end near rubber hose end.
72000 mi US $1900	replaced lower radiator hose, antifreeze flushed replaced one leaky fuel injector, upper/lower intake manifold gaskets, new serpentine belt, spark plugs and wires replaced, oil and filter changed with syn oil replaced lower radiator hose, antifreeze flushed

65080 mi C $150	Water pump. At dealer would have cost 390. replaced water pump
68200 mi C $300	muffler

129000 mi US $2100

Head gasket

154000 mi

My husband replaced the head gasket and 1 air flow sensor.

191600 mi C $340

Exhaust fell off. Necessary to replace system from resonator all the way to the end.

100000 mi US $109

Taken to Parks Chevrolet in Charlotte, NC due to lengthy repairs caused by dex-cool antifreeze. The Dex-cool antifreeze turned into sludge which has eaten through and resulted in the replacement of 3 thermostats, thermal sensor, radiator,etc

206000 mi US $30

replaced resonator.. had to modify to fit right bought at Advanced and go back because gasket didnt come with new one.. fuel pressure sensor replaced

120000 mi US $500

Metal Shavings left in one corner of the engine block erroded a large pit in the head which eventually blew through the head gasket seal, necessitating a complete Head Job. After 80K Warranty ended of course.

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134000 mi US $50	Catalytic converter replaced
162000 mi US $200	Intake manifold gaskets Valve cover gaskets
195000 mi US $100	Ignition module, plug wires and coil replaced.
226000 mi US $100	Water pump replace

91000 mi US $583	Coolant leak - intake manifold gasket replaced
92000 mi US $475	Ignition, but car would not start. Mass air flow sensor had failed and was replaced.
96000 mi US $450	Difficulty starting and power loss while driving. Ignition switch was faulty and replaced.

91000 mi US $300	Check engine light
95000 mi US $131	Evaporative purge valve

129000 mi US $250	Leak in cooling system, replaced hoses, reservoir.
124000 mi	ignition switch recall - affecting AC / fan power as well

204600 mi C $35

The engine cooling overheat warning came on & steam came out from under the hood. Turns out the block heater element had popped out & all of the coolant was lost. The retention bar had corroded away. Replace with a new element & coolant.

71873 mi

Fuel filter changed and fuel injectors cleaned. Catalytic convertor replaced under warranty. It was likely fouled due to other contributing problems and set the check engine light on.

71300 mi C $325

Section of stainless steel exhaust system replaced. First repair to this system.

76260 mi C $525

Technically, the automobile was not at fault. The car refused to start because 9 wires had been chewed by an unidentified rodent. Included in this amount was time spent diagnosing the ABS/ traction control malfunction( sensor failure on left rear wheel) and the occasional malfunction of drivers side airbag( sensor). The air bag issue will definitely be repaired in the near future. The cruise control occasionally refuses to work and the car occasionally stalls immediately after starting and both of those issue will be addressed if and when they worsen.

112000 mi US $150

REPLACE PLUGGED CATALYTIC CONVERTER

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189000 mi US $243

Replace the the cat.converter

133000 mi US $2225	Purchased car with CEL on, would not pass NYS inspection. Replaced 2 O2 sensors, plugs/wires.  Replaced Catalytic Converter. Also repaired coolant leak caused by intake manifold and hoses. New thermostat, fuel filter, oil change, new tires.
143200 mi US $490	Observed coolant under hood and coolant loss. Shop found water pump was leaking.
144900 mi US $450	Hole in exhaust pipe after catalytic converter, exhaust very loud. Entire exhaust system after cat replaced. Check engine light (MIL) on. Shop replaced catalytic converter under part warranty and reset computer, MIL has remained off. No parts or labor charge for this repair.
146200 mi US $55	Weld in exhaust system broke, muffler totally disconnected and pipe hanging down, shop fixed under warranty. Fuel filter seeping, shop would not perform welding without first replacing filter.

215000 mi

Leaking valve cover

84500 mi US $187	Oil sending switch leaking, replaced while car was in for oil change
111823 mi US $770	Exhaust leak (loud) required replacement of resonator, muffler and center pipe.

166000 mi US $18

Replaced fuel injector o-rings

148000 mi US $90

Took car to mechanic for cooling system diagnosis. Mechanic found leak at timing cover gasket. Repair estimated at $1450 (14 hours labor at $90 an hour).

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210000 mi US $175

I could not pass a obd test so they said it was my egr system

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35000 mi US $126	Replaced canister purge solenoid. Was also told steering column flex coupling (intermediate shaft) should be replaced.
35600 mi US $250	Had another sensor replaced. Check engine came on again after 2 days. Had another sensor replaced. Do not have paperwork with me but it had something to do with gas. Check engine light has not come on since.

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122200 mi	While driving, I noticed the engine was running roughly. I tested the ignition coils and noticed that two were beginning to fail. I replaced these using pre-owned coils obtained from a friend for free.
128000 mi	The radiator fans stopped turning. I checked the motor and one is burnt out and the other is not but they do not work independently. I have not repaired because the engine will not overheat in the winter if I don't use air conditioning.
134900 mi US $80	Replaced radiator fan due to fan no longer working.

53000 mi

Finally fixed the Passlock Security issue that would cause car not start up at times. Needed to take out the ignition switch and clean the contacts

116000 mi US $500	plugged catalytic converter
122000 mi US $20	engine started running rough and stalled. Check engine lite indicated mass air flow sensor. Removed and cleaned senor with mass airflow sensor cleaner. Runs fine since

85000 mi US $500	Replaced resonator.
106300 mi US $700	Upper and lower intake manifold gaskets, spark plugs, wires, valve cover gasket

48000 mi US $520	replaced upper intake gasket, flushed dexcool out
69000 mi	The fan sensor would not work so car would over heat all the time. Fan sensor was replaced and still would not work. The computer was replaced the car still wouldn't run right.

81000 mi US $150	Plastic elbow from intake manifold to belt tensioner assembly cracked, leaked antifreeze Valve cover gaskets leaking oil onto exhaust manifold causing smoking from under hood. Risk of fire. Replaced valve cover gaskets.
83000 mi US $350	Code P0300 Random/multiple cylinder misfire. Replaced Mass Air Flow Sensor, Spark plugs, Spark plug wires, Fuel filter, PCV valve, Camshaft position Sensor. Real Problem was Ignition Control Module which has no specific code if bad.

110000 mi US $1336	Leaking Intake Manifold Gasket
124000 mi US $1987	Oil leak
125800 mi US $517	Car suffered intermittent stutters in engine power, usually at cruising highway speed. After a week, Check Engine light came on. Computer indicated Fuel Air sensor.
136000 mi US $1173	Losing power on hills. High rev but no power.
140200 mi US $110	Oil pressure sending unit cause leaking oil
145900 mi	catalytic converter needs replacement

140740 mi C $95	Repaired a hole in exhaust pipe located after the resonator.
145240 mi C $227	Had to replace evap control valve solenoid in order to pass emissions test.
168640 mi	Needs a new catalytic converter.

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93000 mi C $800	replace faulty gasket
137640 mi C $100	replace resonator
146320 mi C $400	engine light came on did an OBD2 meter check for code and found out it was emissions spoke with a mechanic to find out it was catalytic converter
146320 mi C $110	engine light came on, reading now says missing cylinder 1 replaced coil packs with used from wrecker. Engine light came back on and now says misfire on cylinder 5. Have not yet fixed
147520 mi C $170	replaced coil pack plugs and wires
161200 mi C $1300	would not start told it was ignition then BCM.

78000 mi US $550	Replaced for second time ignition switch - security system does not allow car to start because of defect in ignition system
84000 mi US $650	Check engine light on - replaced thermostat.

184000 mi US $480	Cracked exhaust resonator replaced.
198000 mi	Blown rear headgasket resulting in numerous other repairs.

49000 mi US $10000

head gasket blown twice was under warranty

192700 mi US $287

New fuel pump

34500 mi US $1400

Head and intake gaskets had to be replaced due to coolant leakage. Was one year out of warranty but less than 36,000 miles. General Motors was no help. Talked to a clerk in Washington state? No one from GM cares and they don't make this engine any mor

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294300 mi US $300

Muffler needed replaced and another part broke off so more had to be replaced

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108300 mi US $410	Fuel tank pressure sensor became defective causing constant check engine light. Sensor repaired whcih required dismounting gas tank.
123100 mi US $483	Coolant leak caused by defective water pump. Replaced Water Pump.

126300 mi US $400	The ECM started giving EGR errors, A/C pressure sensor errors. The EGR and A/C pressure sensor were tested as well as the wiring. They checked out fine. The ECM was replaced and no errors have occurred since.
128000 mi US $65	Replaced the ignition switch because the climate control system was working intermittently. As the key is turned, components are powered on (BCM, ECM, then engine).

108300 mi US $1100

Intake leaking coolant. Transmission pressure sensor/ valve bad. Causing rough, improper shifts. Possible issues with traction control caused by this as well.

204000 mi US $320

Intake manifold had a minor leak. i wanted to get repaired before it became worse. While in there, we also replaced the plenum (upper intake) gasket, valve cover gaskets, fuel injector o-rings, and thermostat. About $140 for parts 7 $180.

93000 mi US $250

Car stalled randomly, sometimes while driving 40 mph, sometimes after accelerating from a stop. Mechanic replaced the Crankshaft Sensor after experiencing the issue and pulling the codes.

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62000 mi

Coolant Sensor broken. This was repaired under warranty by a Chevy dealer once before but, broke again soon after. This other Chevy dealer decided to replace it and charge me for another repair and parts.

164000 mi US $650

Leak in oil pan and front main seal

138847 mi

Fuel pressure regulator replaced. Was leaking fuel, could smell it in cabin. Replaced plugs and wires. I mention it because it was a *(&#@$ nightmare to do without lifting the engine out. 4 hours.

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310000 mi

The intake plenum exploded and the engine caught fire at 321,000 miles.

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82999 mi US $4000	Replaced BCM, PCM, Passlock sensor, key cylinder, and still did not fix no crank issues.
100000 mi US $475	Passlock issues that still are plaguing the car. Passlock issues; replaced BCM, Pssslock sensor, ignition switch, and key cylinder. Replaced BCM (again) and PCM.

115000 mi US $640	Oil pan gasket replacement.
117000 mi US $1400	Upper and lower intake manifold gaskets. Valve cover gaskets

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53940 mi C $184	CEL on, EGR failure, EGR replaced.
82460 mi C $1113	Low coolant light on, dealer diagnosed lower intake manifold gasket failure. Replaced gasket, coolant, oil, and low coolant level sensor. Years later I received a $400 class action settlement for this issue.
127100 mi C $350	Weak acceleration. Replaced spark plugs and wires.
131440 mi C $1005	Replaced four motor mounts and installed new front axle.
146940 mi C $462	Replaced original factory exhaust pipe. Muffler was fine but had to be replaced because the mechanic couldn't find or make a part to mate it with the new exhaust.
150040 mi C $232	Original thermostat replaced because engine wouldn't get up to temperature. Hose clamp replaced two days later.
151280 mi C $350	Replaced EGR valve

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Source: https://www.truedelta.com/Chevrolet-Impala/engine-problems-53

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