I have a 2008 envoy and the engine light came on.


Asked by May 13, 2013 at 10:59 PM about the 2008 GMC Envoy

Question type: Maintenance & Repair

I tried the old gas cap on and off trick but its still on?

8 Answers

you must have overfilled the gas tank at one point recently...and flooded the carbon canister...The First click....NO MORE temptation to put another tiny bit in there...perhaps to round up to the nearest dollar...but no you can't do that no more! drive a couple of half-tankfulls and it will clear~

1 of 1 people found this helpful.

put the factory cap back on...it will offer the correct amount of vacuum/pressure~

1 of 1 people found this helpful.

I still have the factory gas cap on the rig. Ill try the running half tanks and see if that works. Could there be other issues?

1 of 1 people found this helpful.

the 02 sensor is a common problem...other things would make it run crappy such as an ambient air temperature sensor, a throttle postition sensor, a coolant temp sensor...these things make the ECU happy when they are functioning normally, if they are not the ECU will not provide a correct air/fuel mix, but overfilling the tank is something that even I ....just can't stop at one click....ooooh~


No reason to guess at what it is. Get the codes read at the parts store. Write down the trouble code number and post it here. Someone will advise the most cost effective solution.

3 of 3 people found this helpful.

turned out to be my alternator. Thanks for your help!

1 of 1 people found this helpful.

my code is P0411

had my 08 envoy parked for almost 2 month till I got the funds to do an oil change cause I was over like almost 1000 miles my recommended change and I finally deciced to get an oil change and on my way there the motor light turned of any suggestions what it can be TIA

Your Answer


Looking for a Used Envoy in your area?

CarGurus has 1,494 nationwide Envoy listings starting at $1,800.


GMC Envoy Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Chevrolet TrailBlazer
31 Great Deals out of 3,320 listings starting at $1,650
Used GMC Acadia
540 Great Deals out of 37,810 listings starting at $3,500
Used GMC Yukon
360 Great Deals out of 18,600 listings starting at $1,800
Used Chevrolet Tahoe
626 Great Deals out of 37,230 listings starting at $795
Used Ford Explorer
823 Great Deals out of 64,326 listings starting at $2,000
Used Chevrolet Equinox
792 Great Deals out of 75,266 listings starting at $895
Used Jeep Grand Cherokee
790 Great Deals out of 73,450 listings starting at $500
Used GMC Sierra 1500
889 Great Deals out of 58,970 listings starting at $1,980
Used Ford Escape
913 Great Deals out of 105,493 listings starting at $550
Used Chevrolet Traverse
444 Great Deals out of 28,126 listings starting at $2,995
Used Honda Pilot
433 Great Deals out of 38,946 listings starting at $999
Used Ford F-150
2,491 Great Deals out of 220,663 listings starting at $1,222
Used Dodge Durango
222 Great Deals out of 24,358 listings starting at $1,500

Used Cars For Sale

2009 GMC Envoy For Sale
47 listings starting at $3,995
2008 GMC Envoy For Sale
6 Great Deals out of 232 listings starting at $3,000
2007 GMC Envoy For Sale
5 Great Deals out of 242 listings starting at $2,999
2006 GMC Envoy For Sale
10 Great Deals out of 243 listings starting at $3,450
2005 GMC Envoy For Sale
4 Great Deals out of 223 listings starting at $2,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.