Question about 2004 GMC Envoy
My 2004 GMC Envoy has been having trouble idling and shut off at a stop light today. Now the check engine light is on. I had the thermostat and sensor replaced over a week ago. Any suggestions??
REPLACE THE O2 SENSOR THAT IS RIGHT ON THE MANIFOLD!!! THIS SAME PROBLEM HAUNTED ME FOR OVER 3 MONTHS!!! HUNDREDS OF DOLLARS LATER IT WAS A STUPID O2 SENSOR!!! THE SAD PART WAS... THE O2 SENSOR WAS STILL READING WITHIN SPECS ACCORDING TO GM .... BUT THEY PUT A NEW ONE IN AND IT HAS BEEN PERFECT EVERY SINCE.... FOR 9 MONTHS NOW!!! LET ME KNOW... RLM_75@YAHOO.COM
Posted on Feb 07, 2009
A common cause for stalling at idle is a "throttlebody" plugged with carbon. A simple De-Carbon service that cleans the carbon from the throttle plate and the IAC valve will almost always cure this condition. The check engine light will also give a clue to the system that is having a problem. Just because the code may be fora particular sensor, does not mean that sensor is bad. Sensor readings effect other systems in the truck. Suggest getting the codes read from the computer, and asking an exert here.......
Posted on Oct 23, 2008
Try the fuel filter. Sounds like the engine might be running rough due to weak fuel pressure. Its cheaper to replace, especially if it's still original from 04. Try running some injector cleaner through a couple of tanks of high octane gas.
Posted on Aug 06, 2008
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Sep 30, 2015 | 2006 GMC Envoy Denali
Aug 25, 2014 | 2004 GMC Envoy
Jul 14, 2013 | Cars & Trucks
Feb 12, 2012 | 2002 GMC Envoy
Nov 13, 2011 | 2004 GMC Envoy
Nov 11, 2010 | 2006 GMC Envoy Denali
Dec 02, 2009 | 2004 GMC Envoy
Aug 30, 2009 | 2005 GMC Sierra 1500 Hybrid
Jun 16, 2009 | 2004 GMC Envoy
859 people viewed this question
Usually answered in minutes!