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Re: Gm RVC charging system blues
Posted to Technical Discussion Forum on 3/28/2020 3 Replies

Steve, FYI the GM 4 pin alternator, PLFS, P phase (stator), L lamp (excite), F field return, S sense. On many of these exciting only L will cause the alternator to charge and regulate the voltage. These VR's have built in temperature compensation. Some have LR... Login to read more.

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