Allison Transmission
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ErnieHarris1
How do I change out the back up light switch on a 1991 automatic transmission for a GMC top kick truck.
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replied to:  ErnieHarris1
Rlewis
Replied to:  How do I change out the back up light switch on...
You should find a switch located at center of case just above the pan rail on pass.side.Take it out with engine off!!!and install new one.
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