1988 - 1998 (GMT400) Section for all discussion related to the 1987-1998 Chevrolet and GMC trucks.

1988 Silverado 305 700r4 shifting issues

Old Feb 14, 2020 | 9:55 PM
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cleyd's Avatar
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From: Torrance, CA
Default 1988 Silverado 305 700r4 shifting issues

I have a 88 Silverado 305 with a 700r4. 98,750 miles

I've been having issues with the tranny shifting. From 1st to 2nd, it is extremely delayed, almost like it is skipping second and going straight into 3rd, also no overdrive. When she finally decides to shift and I lean into the throttle the slightest bit, the engine wraps up like its gone back down to first. I have already adjusted the TV cable several times, replaced the governor, installed a corvette servo, and done 3 fluid and filter changes. When I dropped the pan the first time there was no chunks on the magnet, it was actually surprisingly clean for its age.

A little advice and a point in the right direction would be appreciated, as I really don't feel like yanking the transmission at this time, but its looking like its going to be the case.

Thanks, Cole L.
Torrance, CA


Shes not perfect, but the little 305 still runs strong as ever!
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Old Feb 16, 2020 | 11:50 AM
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From: Maryland
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an improperly adjusted tv cable can wreck a goof trans within 50 miles. she might be done.
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