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P30Novice's avatar
P30Novice
Explorer
Nov 25, 2015

Transmission 1988 Chevy P30 - Sticks in Low Gear

After driving over 800 miles from home, the transmission starts sticking in low hear once I reach the Central Valley of California. Called AAA Roadside Assistance (RV Type) they were no help and sent ...
Class A
Mike_Hohnstein's avatar
Mike_Hohnstein
Explorer
Nov 27, 2015
Detent or 'passing gear' is activated by a sliding switch mounted on the throttle pedal frame under the dash. It send 12 volts to the spade connection on the side of the transmission to cause a down shift under certain engine speed. This switch is know to stick intermittently and prevent up shifts. Unplugging the wire @ the transmission is a quick fix until a new part can be sourced.

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