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1994 gmc 5.7 1st and 4th gear gone

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Old May 10th, 2021, 4:14 PM
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Default 1994 gmc 5.7 1st and 4th gear gone

I have a 1994 GMC 2500 with a 5.7 L in it. It is a four-wheel-drive that a couple days ago was driving down the road and Parked it and then got back in it and first and fourth gear we're gone just like that. I have tried replacing the speed sensor and changing fluids and checking fuses I am at a loss and have no idea what it could be. I was told by A mechanic that it is not likely that the transmission is bad seeing as how third and fourth gear are on the same shaft, but saying that he believes I have wiring issues. Anyone have any advice saying otherwise?
Old May 12th, 2021, 4:10 AM
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Originally Posted by Andr
I have a 1994 GMC 2500 with a 5.7 L in it. It is a four-wheel-drive that a couple days ago was driving down the road and Parked it and then got back in it and first and fourth gear we're gone just like that. I have tried replacing the speed sensor and changing fluids and checking fuses I am at a loss and have no idea what it could be. I was told by A mechanic that it is not likely that the transmission is bad seeing as how third and fourth gear are on the same shaft, but saying that he believes I have wiring issues. Anyone have any advice saying otherwise?
Run a PTC code on your Chevy.
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