Transmission will not shift out of low gear replaced ud module that was tested and rebuilt did not help 1994 gmc sireia and speedometer stoped working at same time
The problem could be your ignition switch. Check both sides of all your fuses with a test light. I would say your not getting power to a few of them. If your fuse for the transmission doesn't get power the transmission stays in third gear all the time.
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The problem could be your ignition switch. Check both sides of all your fuses with a test light. I would say your not getting power to a few of them. If your fuse for the transmission doesn't get power the transmission stays in third gear all the time.