Transmission not shifting at all

1992 GMC C1500
V8 • 4WD • AUTOMATIC
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LUTTRELL1988
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  • 1 POST
I have the truck listed above with a 5.7 and 700R4 transmission. We put a new motor in and now it will not shift into any gear.
Nov 27, 2010 at 5:24 PM
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HMAC300
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  • 48,601 POSTS
If you did not have the torque converter in correctly when you put the new engine in you could have broken the fluid pump in the transmission.

Here is a video that will help see if the torque converter is in correctly:

https://youtu.be/ZC7xHVMKLRw

I would remove the transmission to see.

https://youtu.be/3vJAojsrfuU

Please let us know what you find.

Cheers
Nov 27, 2010 at 5:51 PM
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DENISE T
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I had this problem as well, yep, broke the transmission, DOH!
Jun 14, 2018 at 12:24 PM
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