Four problems related to ignition module have been reported for the 2002 GMC Envoy. The most recently reported issues are listed below.
Contact statesd the windshield wipers will not work except on high. The service dealer stated a bad air conditioning cycling switch caused the windshield wipers to fail. They stated the ignition switch module, windshield wiper module, and the air conditioning cycling switch needed to be replaced, and the computer program needed to be updated. The engine lost all power while driving; there were no warning lights or indication that there was any thing wrong with the vehicle. There was a recal 04v046000 on the windshield wiper motor, the recall was serviced, but the consumer stated the module was already broke. The vehicle will be serviced, but at consumer's expense. The consumer has already filed a complaint on the ignition switch module.
02/11/02 4,667 miles everything shut off. Engine stopped while driving. Restarted at 2000 rpm with lots of noise. 05/29/02 7,463 miles vehicle died and would not restart until after 15-20 minutes 06/05/02 7,664 miles vehicle died while driving and would not restart until after 15-20 minutes 11/13/02 11,528 miles backing out of driveway engine died. Would not restart. Towed in. 06/10/03 17,865 miles died while driving. Dealer did not even look into this. 06/14 to 06/18/03 18,000 to 18,214 miles car off road for 5 days due to engine died while driving. I referenced ecas and pcm problem NHTSA defect summary ea03007. Dealer tells us no-one else has had this problem. Suggests driving round dealership until problem occurs, and then calling them. Don't try to start until they come out (never mind we're in the middle of a busy road and in the evening time when they are closed). We are lucky we were not rear-ended this last time. GMC refuse to replace ecas wiring bundle and pcm solution per ea03007. Help!!! help!!! please help!!!.
Below is copy of letter given to gm dealership following the engine failure at high speed: 10/05/2001 to : bob ross service department 2002 GMC Envoy 3,240 miles problem: on Sunday October 4th, my wife was driving on 675 to fairfield mall from our home at 6:10 pm in the evening. She had traveled about 8 miles and was going 65 mph in the middle lane when the Envoy suddenly lurched and then quickly slowed with total loss of engine power. The headlights (it was dark) were still on and the check abs light came on as she coasted to the berm in moderate traffic. At that point the car would turn over (battery ok) with the key but would not fire. She called on-star and they said it would have to be towed and called dispatch (case 00244572). She also called me so that I could pick her up. When I got to the car, approximately 6:15, I turned over the engine and it fired. The check abs lamp was still on. I waited for the tow truck and he followed me to the bob ross dealership. As I started to drive, the abs lamp went out, but the check engine soon lamp came on and stayed on the entire drive to the dealership (about 8 miles) where it was parked at 6:50 pm Sunday night. During the drive, it was obvious the transmission would not shift out of one of the lower range gears (not sure which one) and it appears the engine was running in ã‚limp home modeã‚. It would appear some computer glitch has occurred which is critical to the entire engine control program. I am very concerned in that this vehicle only has 3240 miles and the total and sudden loss of power in moderate traffic and darkness could have placed my wife in a precarious position as she tried to move to the berm with no power assist (steering or brakes) available. Please check the vehicle out carefully to determine the cause of this unacceptable failure. John perkins.
Vehicle has stalled twice at 65 mph. Vehicle taken to dealer 6 times. Dealer replaced computer. Consumer states vehicle is experiencing electrical problems. Air level system deflates each night, part is on back order.