Question about 2003 GMC Sierra
I have a 2003 duramax/allison gmc p/u with 77k miles. i was snow plowing for about an hour doing residential drives, stopped for lunch, restarted and drove 30 mpr in 4h when a grinding noise observed with loss of power, akin to a slipping manual clutch. immediately i pulled to a stop and tried 2h, but no forward motion. i tried a couple of slow deliberate shifts into nuetral to drive until i was able to move again, but i observed a check engine light come on dashboard, and a transfer inhibiter message in message center.
the truck now will not shift correctly, and cannot shift into top gear. it also has a slow acceleration from a stop, as if the torque converter isn't locking up. transmission filter has been maintained by dealer. now at a local garage, i am awaiting his analysis. could this be as simplea a fuse? or is it something else. thanks glenn
I have a 2006 duramax with the allison 6 speed with the manual shift option. once in a while when i put it in reverse it says shift range prohibited and the r light blinks, so i put it back in park then to reverse and it works fine. Then the cold weather came. It was below freezing for 3 days and i started my truck and put it in gear but it wouldnt move. it was like the brakes were held and the motor didnt have enough power to turn a tire. I let it run for a hour and finally got it to crawl forward but still was being held back by something. i shut the truck off and turned it back on and it worked totaly fine. i have a edge programmer that resets any trouble codes each time i turn the key on. two weeks later it got cold again. i started my truck and started driving down the driveway and everything was fine until i got up to 20 mph, it wouldnt shift out of first gear. i tried it for three days and wouldnt change. i then parked it in my heated shop for a day and then it worked normal again. so something was froze up and is thawed out now. anyone know what i can do to fix this issue? i dont want to get stuck out of town somewhere
Posted on Jan 18, 2013
Thawed it out the next morning-reset codes to standard-viola-all is well. seems ice found its way into switch@transfer case and ran the chips riot-sending tranny into limp mode. cold weather,rrrrrrrrrrrr. june can't come soon enough.
Posted on Jan 30, 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.
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:
May 07, 2015 | GMC Cars & Trucks
Aug 23, 2013 | 2007 GMC Sierra 2500HD
Jan 29, 2011 | GMC Sierra Cars & Trucks
Dec 27, 2010 | 2000 GMC Sierra 3500
Oct 14, 2010 | 2003 GMC Yukon Denali
Dec 30, 2009 | 2003 GMC Sierra
Dec 12, 2009 | 2003 Chevrolet Silverado 2500HD
Jan 09, 2009 | 2003 GMC Sierra 2500HD
Jul 15, 2017 | 2003 GMC Sierra
418 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: