2002 GMC Envoy SLT 4.2 6 cylinder from North America


I would buy another if available new


Intermittent problem. The vehicle will start losing power while driving. The engine does "not" stall, but the mpg's drop from 18-19 to 6-9. It's almost like driving with one foot on the gas and one foot on the brake. If I take my foot off the gas, the vehicle starts slowing like I was braking. From a stop, it struggles to increase speed, sometimes knocks a little, strains, but does eventually shift gears, though not to OD. Again, like driving with a foot on the brake.

Tranny checked okay, plugs changed, throttle body cleaned and fuel filter changed. Mechanic said trial and error, since there are no service engine lights or codes on the computer. Trial and error suggesting a new throttle body or fuel pump. However, shifting into neutral, the engine accelerates smooth, doesn't cut out, so neither really fits, and both are very expensive.

Other than having to fix a warped exhaust manifold and gasket at 155K, in addition to normal wear items like cooling fan, front brakes, and a few things here and there, no problems.

General Comments:

Very dependable, but can't seem to find anyone with a similar problem?

Would you buy another car from this manufacturer? Yes

Review Date: 20th May, 2011

20th May 2011, 19:40

Check the spark plug wires - the insulation breaks down eventually, and the high voltage arcs to the engine block before it reaches the plugs.

21st May 2011, 11:50

We had the same problem with our TB. One day it just quit while I was idling in a parking lot. It took a full 30 seconds of cranking and then slowly sputtered to life. After that it ran fine again. We had the same things fixed on ours, and it never seemed to fully rectify the problem. I have heard that reflashing the computer can solve this as well. We never tried that though. My wife also had it stall at intersections once in awhile, which is very dangerous. She said she'd be waiting at a light, and then go to take off when it turned green, and it would quit. Amazing she didn't get rear-ended. Also, you lose power steering and brakes immediately, so it is very hard to coast it off the side of the road. She had the same result... cranking it for a ridiculously long time, and then it eventually starts up and runs fine again. Really weird issue.

We had to quit buying these trucks just because even the GM technicians couldn't actually fix the problem. It is a very common issue if you research it. That was how I knew what to ask them about fixing when it first happened (at least some theoretical fixes!). I am not quite sure why GM continued to sell these for so many years without solving that issue, as it was potentially so dangerous. It is just a machine, after all, so something had to be causing it!

2002 GMC Envoy SLT from North America


Great car


The fan clutch just went out on our 02 envoy expensive to have the dealer fixit $800.00... Shop around at part stores I got mine new for 262.00 its not that hard to replace pain in the, but; but not hard. I took about 1hour in the driveway if you do it right you don't have to pull the radiator, just the hose. Or have a mechanical friend help you. Its not a bad idea to know whats under your hood especially for girls like me.

Would you buy another car from this manufacturer? Yes

Review Date: 17th December, 2007

2002 GMC Envoy from North America


I like the car, but hate the poor gas mileage


The 4 wheel drive actuator pump seized up while in 2 wheel drive.

The center console is very cheap. It broke second day I owned it.

It has very, very bad handling at anything over 45mph, even with brand new tires.

You must use expensive ceramic brake pads when changing the brakes, or else the brakes will make constant humming noise.

It is very bad on gas, highway or city.

General Comments:

This vehicle is a very nice riding vehicle with plenty of interior room, and it has a lot of power and acceleration.

Would you buy another car from this manufacturer? No

Review Date: 26th November, 2007