Chevy and GMC Duramax Diesel Forum banner
  • Hey Everyone! Enter your ride HERE to be a part of this months Ride of the Month Challenge!
1 - 3 of 3 Posts

·
Registered
Joined
·
298 Posts
Discussion Starter · #1 ·
My brother in law called me the other day saying his 03 was shifting strang when cold. He said it wouldn't shift till almost redline then shifts real hard. Threw codes P0700 and U2105. He has the Edge with attitude but says he has kept it on lvl 1. Truck has about 135000 miles on it. Any thought on the codes? I told him the first thing to do is change the spin on filter, but I am worried he just got the DEATH code for his tranny.
 

·
Registered
Joined
·
1,269 Posts
Take the Edge programmer off, and change the allison spin on filter... I would start with that..
 

·
Premium Member
Joined
·
17,806 Posts
The engine fuel filter will affect trans shifting-- changing it has fixed many trans problems! :rolleyes:
 
1 - 3 of 3 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top