79 gmc 2500

Asked by Apr 19, 2014 at 03:34 PM about the GMC C/K 2500 Series

Question type: General

hello got a 79 gmc 2500 454 auto trans only shift 2 times should it shift 3 times all auto i have drove shift 3 times

1 Answer

90,815

79 big block GM only has a 3speed tranny, most likely a turbo 400, so you will only feel 2shift points, 2nd then 3rd. The gear indicator on the cluster should only show 1. 2. Then D for drive.

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