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Re: Speedometer bouncing while Parked
Posted to Technical Discussion Forum on 2/1/2020 1 Reply

Ah you have Gremlins! Start at the battery and clean and tighten every ground under the hood. Then go to the interior and using repair data, locate any/all grounds. loosen and retighten every ground.

What is happening is the PCM is looking for a ground that ... Login to read more.

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