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Doc
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Discussion Starter #1
This weekend coming my overdrive would not engage on the way home. I made a stop before going home and it would not engage in reverse. When I started back up to go home, everything worked fine. I pulled out my tune when I got home and check DTC and nothing besides the 0603 code. Today on the way into work and the overdrive off light was flashing. Pulled codes 0603 and 0783.

Took it to the local transmission shop and was able to reproduce the results but was not convinced (after and hour of driving several times and pulling codes) that their was a problem with the transmission but need to replace the watch battery in the PCM. On the way home from work today, got the light again and pulled codes 0783 & 0732. In order to get the light to come on have to be going 50+ MPH and 2200+ rpm, if it shifts at 50 and around 2000 rpm it will not throw the overdrive light. Suggestions?

Thanks. James
 
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