Question about 2003 GMC Sierra 2500HD
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
SOURCE: codes #171 & 174
first check out for o2 sensor if its faulty this can show up.but if its proper.Evaporative emission control system leak very small 171 System too lean (bank 1) 174 System too lean (bank 2)
Posted on Jan 05, 2009
dont take soo much in consideration after you have make all this things, some time is on only for any wire faulty, or a shrt electrical arc in any place in wire system. ask auto tap mechsnics for this maybe they have similar case before.
Posted on Apr 06, 2009
the code 113 is intake air temp cicuit, high input.
the code 102 is mass air flow volume air flow circuit, low input.
the code 171 is system too lean (bank 1)
I sure hope this helps you out. Dont sound like anything too major though
Posted on Sep 24, 2009
switch, we run off snitches. 171 174 banks 1 & 2 Lean. Most likely cause are Upper Intake Manifold Gaskets, failed seals. It's not 1990 on. It's 1996 and on OBD2.
Posted on Nov 03, 2009
Tips for a great answer:
Jan 20, 2015 | 1999 Chevrolet Silverado 2500
Dec 28, 2012 | 1993 Ford Ranger SuperCab
Sep 16, 2012 | 1998 Ford Explorer
Jul 31, 2011 | 2002 Nissan Xterra
Nov 06, 2009 | Chevrolet C1500 Cars & Trucks
Feb 11, 2009 | 1994 Jeep Grand Cherokee
Feb 07, 2009 | 2000 Ford F150 Flareside SuperCab
68 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: