Re: U1300,Class 2 Cmmunication,Short to Ground Fault

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Posted to Technical Discussion Forum on 12/14/2012 4 Replies

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Hi joe,

This is from my 2000 chevy impala. Normal class 2 data line voltage [2000 Chevrolet Impala LS, ECM/Inputs/Outputs Waveform]

With the data line grounded the car started and set these codes... Login to read more.

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