Having problems with your 2007 GMC Sierra 2500HD ?
I have a 2007 gmc 2500hd duramax with an allison 1000 ******.......when i out it into drive, i can sit still for about 5 sec. then it shifts into second without moving an inch. will shift 2-3-4 perfectly fine but wont go into 5-6 at all....dtc code says shift solenoid c is stuck open.....i've flushed the fluid, replaced both filters, and replaced the c solenoid, cleared the code, then it pops back up saying the same thing. HELP!
Repair Help & Product Troubleshooting for 2007 GMC Sierra 2500HD
Tips for a great answer:- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.