308 TrueDelta members own (or used to own) a 2000 or newer GMC Envoy. 63 of these members
(20.5%) have reported engine repairs for their car.
A total of 123 engine repairs to GMC Envoys--an average of 0.4 per
vehicle--have been reported.
275-horsepower 4.2L I6 4-speed automatic 4WD w/low range
Air pump gate (valve) cleaned. Code P0410
Relay for exhaust airpump sensor.
Envoy went in for Check engine light turned out to be a air pump sensor. While in shop they noticed the water pump was leaking. Replaced. Fan clutch was also replaced. They also noticed that the cam actuator solenoid was leaking. Replaced.
The AIR system comtinues to give multiple problems on this model year GM Vehicle. A drop of water can freeze in the pump and cause these un-desired effects. In my professional opinion it is caused by another GM Design flaw. I took the piping loose and ble
More bad ignition coils needed to be replaced. Vehicle accelerated poorly and seemed underpowered, then Service Engine Light came on. Also found bad plugs and a melted wire. The shop then found a leaky seal and replaced it.