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2005 GMC Envoy Engine Problems

53 TrueDelta members own (or used to own) a 2005 GMC Envoy. 7 of these members (13.2%) have reported engine repairs for their car. A total of 15 engine repairs to 2005 GMC Envoys--an average of 0.3 per vehicle--have been reported.

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2005 GMC Envoy problems occur, check out our car reliability stats.

Percentage of 2005 GMC Envoy repairs by problem area

Chart based on 67 repairs.

2005 GMC Envoy engine repair cost distribution

Chart based on 15 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
Non-members can see only ten 2005 GMC Envoy repair histories. Log in or join us to see them all.

2005 GMC Envoy

Engine not specified

104000 mi   Check engine light emissions problem was still unrepaired when it was traded. 

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2005 GMC Envoy 4dr SUV, ext.

300-horsepower 5.3L V8 4-speed automatic RWD

80000 mi US $2800 had to replace engine 

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2005 GMC Envoy 4dr SUV, ext.

275-horsepower 4.2L I6 4-speed automatic 4WD w/low range

93000 mi US $400 Replacement of water pump - was not yet leaking but was making squeaking noise. 
107000   CEL came on. Onstar diagnostic said cooling system problem. Local shop diagnosed defective thermostat and replaced. 
134540 C $50 Engine trouble code for thermostat problem. Thermostat stuck open, low coolant temperature. Thermostat replaced. Idler pulley bearing loose play. Replaced Idler pulley. 
141980   Leaky radiator cap. Replaced rad cap. 
153420   Rear Heater Core leaking. Cut unit out so don't have to recharge AC system. Purchased new unit and installed myself using copper unions to connect back into system. 
166760   catalytic converter plugged up and ineffective, reducing engine performance. 

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2005 GMC Envoy 4dr SUV

275-horsepower 4.2L I6 4-speed automatic RWD

79000 mi US $220 Problem was detected in the cooling system. Thermostat not opening properly, but engine was not yet overheating. Replaced thermostat assembly 

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2005 GMC Envoy 4dr SUV

275-horsepower 4.2L I6 4-speed automatic 4WD w/low range

63860 mi   Secondary air check valve rusted and stuck. 
112840 C $130 Cooling fan Clutch .Code P0526 
124180   Engine did not reach operating temperature by the alloted time .ODBii code P0128 .Changed Thermostat and coolant Temperature sensor. 
40500 US $380 Water pump bearing failed causing noise like detonation. Entire water pump replaced. 

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