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Re: 2000 C1500 harsh 1-2 shift, no codes
Posted to Transmission Forum on 5/21/2018 1 Reply

possible causes

1- over turned EPC over the limit , back it up 1/2 turn and check, if turned more than that it will miss some some gears as if bad AFL valve.

2- Broken 2nd accumulator spring.

3- bad grounding, check the trans case and engine ground with ... Login to read more.

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