Question about 2002 GMC Envoy

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My 2002 gmc envoy is running rough, it misses when im driving? I thought it was do to using 87 octain? sometimes it stalls at a stop sign?

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  • GMC Master
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First thing to change is the fuel filter, and we'll go from there if that doesn't help.

Posted on Jul 24, 2009

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Posted on Jan 02, 2017

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Replaced my battery and now when I put On the defroster or A/C the enginr stalls and is running rough. When I stop sometimes the engine surges and car bucks forward. Need some HELP PLEASE!


Very common problem after a battery change. Clean your throttle body with throttle body cleaner. First disconnect the battery, clean the TB with TB cleaner, must be nice and shiny. When finished, hook the battery back up and drive around for 20 minutes or so with all accessories off, so the computer will relearn a properly functioning throttle body.

Your computer learned some bad habits, so when you changed the battery, the computer thought the throttle body was clean and functioning properly. So when you changed it, this caused all your problems. Very common, keep your throttle body clean, should be done at least once a year. Total cost if you do it yourself is around $5, for the can of TB cleaner.

Apr 13, 2011 | 2004 GMC Envoy

1 Answer

2002 envoy battery died - replaced and now wont start on Driver 2 and wants to stall at all stops on Driver 1 - also stalls when the air conditioner is used


Very common problem with Envoys and Trailblazers. For Driver 1 Clean your throttle body with throttle body cleaner while the battery is disconnected. After this is done, re-connect your battery, drive around for 5-10 miles while the computer resets and relearns. Do the driving with the A/C off and the defroster off. Your problem will be solved. I've never heard of not starting in a different driver mode with just changing the battery.

Dec 10, 2010 | 2002 GMC Envoy

1 Answer

2004 Envoy XL idiling rough and now cutting off at stop signs or lights.


could be a number of things,has the envoy been serviced latly,im inclined at this point to suspect dirt in the fuel,i would run a good fuel cleaner through system as you need to put fuel in to run the cleaner try another filling station ,ie not the one you get all your fuel.adrian,,,,,,,,,,,,

Aug 19, 2010 | 2003 GMC Envoy

1 Answer

GMC Envoy 2002. When I get to traffic stop light. It will stall .. RPM is about 500 at idle. Doesn't do it when cold ( idle around 1000RPM. runs ok when driving just stalls when you get to stop sign or...


check your vaucumn hoses for leaks any leak in that system will effect your fuel pressure regulator and fuel rail that controls the running ability

Jan 14, 2010 | 2002 GMC Envoy

2 Answers

Rough idle


sound slike you may have unplugged or disconnected somethine else or the spark plug you put in is bad or inpropper gap

Sep 03, 2009 | 2002 GMC Envoy

1 Answer

2002 gmc sierra, 3500, 8.1, flashing mil, dies, starts rough idle



First buy the alldata subscription for your unit and read the engine power management system, once you understand this then you will see you don't need a scanner, you can code out if it's a engine problem then read the codes itself with a paper clip. Then once you get the codes post them here to get a better answer, the more information you can provide the better the answer you will get. A digital test meter will be better than a scanner. Without understanding the engine management system you won't be able to fix it without replacing a lot of parts.

Aug 02, 2009 | GMC Sierra 3500 Cars & Trucks

1 Answer

A/C compressor is stalling


replace the ac system compressor dryer and orfice tube the ac compressor is locked up

Jul 06, 2009 | 2002 GMC Envoy

3 Answers

2004 Envoy xl stalls when making turns


this is caused by slow engine idle speed, do the procedure below.
Here is the common cause of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.



Jun 16, 2009 | 2004 GMC Envoy

1 Answer

Service Engine light on, car feels likes it's going to stall when stopped, and feels like it's vibrating. 2002 GMC Envoy


Service Engine light on, car feels likes it's going to stall when stopped, and feels like it's vibrating. 2002 GMC yucon denali

Aug 14, 2008 | 2002 GMC Envoy

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