Question about 2003 GMC Sierra 2500HD
Right on top in the middle between the alternator and A/C compressor. The back t-stat has little vent holes that need to go towards the rear of the engine.
Posted on Jan 09, 2009
a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jul 27, 2014 | 2001 GMC Sierra 2500HD
Nov 04, 2010 | 2003 GMC Sierra 2500HD
Aug 23, 2010 | 2003 GMC Sierra 2500HD
Dec 17, 2009 | 2003 GMC Sierra 2500HD
Sep 01, 2009 | 2003 GMC Sierra 2500HD
May 31, 2009 | 2003 Chevrolet Silverado 2500HD
Feb 20, 2009 | 2003 Chevrolet Silverado 2500HD
Nov 27, 2008 | 2003 GMC Sierra 2500HD
180 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: