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My 2002 Envoy XL engin pulsates about 200 to 300 rpms while driving on the highway.

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6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: RPMs drift up 200 to 300 rpms when idleing and when in cruise

clean or replace the IDLE REGULATOR VALVE

Posted on Jun 04, 2009

  • 1 Answer

SOURCE: 2002 GMC Envoy XL SLT

I have the same car and the same problem.......

Posted on Mar 02, 2011

  • 1311 Answers

SOURCE: 2002 envoy engine stumbling

Try cleaning the throttle body first. Make sure to clean both the front side and rear side thoroughly. Also, disconnect the battery while doing the cleaning, this will reset the computer and allow it to relearn to the cleaned throttle body.
Unless you have the check engine light on and can retrieve a fault code, do not start to change parts. With the mileage you have, you may want to change the O2 sensors.

Posted on Nov 19, 2011

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1 Answer

Can you shift from 2wheel drive into allwheel or any other gear while driving ?


You can at slower speeds. Highway speeds, the computer won't switch it.

Mar 26, 2016 | 2002 GMC Envoy XL

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2003 GMC Envoy V6 - will not rev over 3000 rpms. Idle also varies 300-400 rpms. What's wrong??


Unplug 02 sensor and rap it up so bang around then take it for drive

Sep 11, 2014 | 2003 GMC Envoy

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My 2002 envoy has a miss that just started==was driving on the freeway for about 40 miles @70 pulled n a station to get a drink ==started it back up and it started missing like a dead plug or coil i...


2002 Envoy sle 4.2 L straight 6. Random misfire(PO300). After erasing codes for several days, I finally took my car on the highway and ran it at high speed(70+) for about 4 to 5 miles. Check engine light came on as before but this time it gave me(PO305). Random misfire cylinder 5. So I switched coil 5 with coil 2. Went back out on the highway and repeated as before. This time it gave me(PO302). This was telling me I had a bad coil. Replacing one coil pack solved the problem. The professionals told me low fuel pressure would not give me random misfire, but rather a O2 code because the engine is running lean. Thank you------------------------------------ thank you very much.

Jun 26, 2012 | 2002 GMC Envoy

2 Answers

2002 gmc envoy is over heating have changed the thermostate and the put new radiator but its still over heating any suggestions


Have the FAN CLUTCH checked. they are a common failure. Get a AC DELCO or the part from the dealer. Why was the radiator replaced? Heater work OK? A/C works OK?

Sep 22, 2011 | 2002 GMC Envoy

1 Answer

Engine stalls occasionaly


hi..
Disassemble and clean the carb, particularly the jets. I suspect the charge light being on is a result of your destroyed battery, which needs to be replaced. Sta-bil over the winter and a smart trickle charger will prevent the problems you are having in the future...

thank u
rate me!!

May 24, 2009 | 2002 GMC Envoy XL

2 Answers

RPMs drift up 200 to 300 rpms when idleing and when in cruise


Problem solved by the dealers service department. Thanks

May 07, 2009 | 2002 Jeep Grand Cherokee

1 Answer

Envoy is running on highway and suddently turn off & wont start


This could be a bad key. Expensive but if necassary to replace to check on the symptom of the car since no codes are being thrown. I would also say check your Idle Air Control valve and your EGR valve to make sure they are working proplery

Apr 17, 2009 | 2002 GMC Envoy

1 Answer

2005 GMC Envoy XL left work yesterday and went to pull on to the Highway and it just reved up as if it want in gear. any ideas


low fluid maybe it could be alot of things it has a electric trans so the trans comp could be going out or even the trans it self

Mar 15, 2009 | 2002 GMC Envoy

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