Question about 2003 GMC Envoy Xl
I have a 2004 envoy and when i turn my fan on the rpm goes down and engine has stalled. i disconnected the blower and it still happens. i changed the control module located behind the blower and it still happens. any ideas what else to check?
Sounds like the alternater.It is not putting out enough out put.Check with a volt meter conneted to the battery.It should read about 13.75 to 14.25.My guess it is only puting out about 12.5 to 13 volts.Check the battery terminals for a good connection.Be sure the cable ends are shiney and the battery contacts are shiney also.Warning,some new vehicles will loose computer memory when disconnecting the battery,so have some kind of 12 volts to plug into the cig. lighter(if the cig lighter works with key off).This will keep computer memery in tact.After you have done this make sure the alternator has the out put of 13.75 to 14.25 volts while engine is running.With key off,it should read at the battery at least,12.25 to 12.5 volts.If the alternater is not puting out these volts,then replace it.The vehicle can not operate with low voltage,and if you turn something on,such as the blower motor,or ac,or head lights,they draw a lot of amps.This will make the engine stall.I hope this was some help.Let me know if it was.
Posted on Oct 06, 2009
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.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
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:
Jun 06, 2017 | 2002 GMC Envoy
Oct 10, 2013 | Cars & Trucks
Mar 08, 2017 | 2003 GMC Envoy
Sep 23, 2011 | 2002 GMC Envoy
Jun 11, 2010 | 2004 GMC Envoy
Feb 06, 2010 | 2004 Chevrolet TrailBlazer
Sep 21, 2009 | 2004 GMC Envoy
Jun 16, 2009 | 2004 GMC Envoy
Jun 07, 2009 | 2004 GMC Envoy
239 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: