1990 CHEV VAN SPEEDOMETER

  • Tiny
  • 1990dutchvan
  • 1988 Chevrolet Van
  • 2WD
  • automatic

I've replaced a 3:52 rear end with a 4:11. What do I need to do to get the speedometer to read the correct MPH? Van has a 5.7 with AT.

Do you
have the same problem?
Yes
No
Tuesday, February 1st, 2011 AT 2:38 AM

1 Reply

  • Tiny
  • hmac300
  • Expert
  • 44,316 posts

Good luck on this one, the pcm has to be reprogrammed for the rear end and i'm not sure they will go for that particular rear end. You'll have to contact a dealer and talk to their guy that does the reprogramming. It may not be capable of doing this.

Was this
answer
helpful?
Yes
No
Tuesday, February 8th, 2011 AT 1:53 AM

Please login or register to post a reply.

Similar Questions