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GMC Envoy Questions

Get answers to questions about your GMC Envoy at RepairPal. Find solutions, diagnose problems and get back on the road.

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replaced spark coil packs,(and plugs) map sensor,cam and crank sensors, cleaned intake,replaced intake gaskets(all), no codes other than p0300(random misfire), cleaned and replaced battery terminals(corroded). When cold started p0128(thermostat temp).Cleared codes and driven 200 miles. p0300(ramdom misfire)when cold started and always with service engine soon light steady, multiple misfires at idle and shows no codes. idle up to 2500 in park, with only slight misses. runs strong on road with slight miss when pulling away from light. Clear codes and runs good for 200 miles and then same symptoms.

im trying to figer out what is rong some tell me a bad grownd
ive checked all fues and all is good but doint understant why the tail lighs dome lights air and windo and the radio wouint worke they just stoped working going down the road if any on can
thanks and sorry about the spelling

Driver back heat works but not seat part. Same for passenger side.
Is there a do it yourself repair or replacement?

Seat won't move, up down, forward, backward or recline. Is it a motor issue? Breaker is fine.

On the highway, it almost topped out in the red, so, I lowered my speed limit to 45, turned the heater on high, it started dropping to about 4 notches below red, got home and parked it. Thanks

Somebody said it was the transfer case I replaced it but it still making that sound and it's coming from the front of the truck more like a loose metal sound.

Had been in my truck a few hrs prior, then got awaken to my son telling me my back window was shattered

radiator top anything else

The sound was coming out of the speakers fine yesterday and have never had any problems. When I turned my vehicle back on a couple of hours later the radio display was fine and the volume was normal but no sound was coming out. I checked again today and still no sound coming out but the radio appears to be working fine. Thoughts or advice?

Cannot fill tank with gas, takes 15 minutes to get $5.00 worrth of gas in it. Took fill tube off and inspected it for a blockage, there wass none. I found a check valve on the inside of tank at fill tube neck, anybody got a solution or a diagram of check valve and its spring?

Regulator for right front window

I started the SUV and all gauges quit working.The battery light and airbag light are also lit.They were all fine before.I checked all fuses and they are fine.Am'I looking at possibly The body control module or else.Need help!!

it started with me noticing the air was not very cool so i bought a recharge kit and rechargded it and noticed my compressor was not cycling so i replaced the switch and had no effect on cycling. is there something else i can check

you can turn the switch but the a/c only blows from the bottom

After running for about an hour the vehicle turns off I attempt to restart it but it does not start until about a half an hour later after it cools down a bit the check engine light came on I took it to the mechanic they checked everything that can possibly find I change the throttle body and that turned out not to be the problem I have spent an arm and a leg trying to solve this problem I keep getting different answers from different mechanics I was told it's probably the computer which I picked up a used one from the junk yard and replaced and the problem still occurred

My vehicle was parked after a brief trip, and all of a sudden the entire car was full of smoke. The entire wiring harness shorted and melted the insulation on the wiring without ANY of the fuses being "blown". The wiring is "fried" all the way from under the hood, through the firewall, under (inside) the dashboard, and continued to the fuse block under the rear seat (driver's side). Are there any recalls for this type of incident, or has anyone else experienced this ? Please note that I'm not a mechanic and my vehicle is now "torn apart" at the shop. Any help would be sincerely appreciated !!!

This just started, but have been having issues where the Radio does not shut off after I exit the car. Also, the inside lights are not coming on when the doors are opened.

Replaced the sensor and still won't shift out of second gear. Fluid looks great no Burt smell or anything any other suggestions on what to try?

I had the fan clutch replaced because it sounded like a jet engine all the time. Now that it has been replaced it still sounds like a jet engine when you first start it after it has been sitting -- like overnight or all day at work. It only lasts for about a minute then goes back to normal. Is this something to worry about? Did I get a bad fan clutch?

The blower is erratic and sometimes doesn't shut off I think its the blowerrelay. Any ideas

trying to get a picture of this motor were the oil pump is and how to take it off