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Q: Only seem to have 4 Low forward and reverse and reverse 4 HI only.

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When I was pulling a load I had hit a bump the RPMs went out like I was in neutral seems like all was gone went through the 4x4and it went into 4 low

My car has 220000 miles.
My car has an automatic transmission.

The transfer case may have damaged the shifter rail or the synchronizer on the shifter rail. I recommend seeking out a professional, such as one from Your Mechanic, to help you diagnose your transfer case.

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