Question about 1993 Chevrolet K1500
I have a 1993 Chevy k1500 Silverado with a 5.0 litre engine. I have been experiencing this problem for the last year. Out of nowhere, the speedometer starts running erratic in that it bounces back and forth and the transmission will kick into second gear and will no longer shift. What I have done is stop the truck and restart and everything seems fine. Thinking it was the transmission, I had it checked and they have replaced the speed sensor. This has not helped. I do not believe there is anything wrong with the tranny and more with the speedo or some electrical unit that is affecting the speedo which in turn afftects the tranny. I am at a lost with this thing.
The ECM or TCM may be the culprit, its also possible that a ground wire is no longer grounded or partially grounded giving you the erratic speedometer.
Posted on Dec 08, 2008
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