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GMC
C1500
Drivetrain
Transmission
Symptoms
Not Shifting
Transmission not shifting at all
1992 GMC C1500
V8 • 4WD • AUTOMATIC
LUTTRELL1988
MEMBER
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 9:24 AM
HMAC300
✓
Experienced Mechanic
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 9:51 AM
DENISE T
MEMBER
0 POST
I had this problem as well, yep, broke the transmission, DOH!
Jun 14, 2018 at 5:24 AM
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