Question about 2004 GMC Envoy
Don't know what you mean by engine losing pressure, but as far as the air not coming out of the correct vents, try the following;
Pull the HVAC-B (#36) fuse for 30 seconds (located in rear fuse panel, under seat), then put it back in. Then turn the ignition switch to RUN (no need to start the engine). Don't touch ANY controls for 90 seconds. I don't think it matters what position the controls are in, but some people think it works better if you have the HVAC system turned off. After 90 seconds, the actuators have gone through their paces, the controller has new memory data on the end stops of the rotation of each actuator, and you might be good to go
Posted on Sep 09, 2010
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:
Feb 16, 2015 | 2004 GMC Envoy
Oct 26, 2011 | 2004 GMC Envoy
Jun 20, 2011 | 2004 GMC Envoy
Oct 25, 2010 | 2003 GMC Safari
Oct 21, 2010 | 2004 GMC Envoy
Jun 02, 2009 | 2004 GMC Envoy
May 23, 2009 | 2004 GMC Envoy
Mar 12, 2009 | 2004 GMC Envoy
479 people viewed this question
Usually answered in minutes!