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 - 2 of 2 Posts

·
Registered
Joined
·
5 Posts
Discussion Starter · #1 ·
Ive had a few strange issues, possibly because mice urinated in the under fuse panel, I cleaned and used diaelectric grease the best I could
Problem 1 The speedometer ready 80 mph at idle,

Codes are as follows
674
0004
4800
0580
A480 which has been clear for a while
401 and 101, 74 also have been clear for a while

Thanks in advance
 

·
Premium Member
Joined
·
1,456 Posts
speedo is most likely a bad stepper motor. i have heard you can replace the stepper motors cheap and easy, i haven't had to try this yet.
 
1 - 2 of 2 Posts
Top