justinsaunders
Newbie
I just purchased a 97 c1500 I’ve had a few other gmt400s in the past and I’ve had this same problem before before I swapped the motor in my single cab but after the swap it fixed itself. The speedometer will go up in speed inaccurately and when letting off the throttle it will decelerate inaccurately as well. I don’t know how to explain it exactly but I’ve changed out the wheel speed sensor as well and it didn’t change anything. I’ll comment with a video as soon as I can if anyone could help it would be berry appreciated thank you