this truck has 1-2 shift ;but no 2-3 or 3-4 upshift,reverse is [...] will shift at times perfect,all shifts and lock up, but 80% of the time it will just shift 1st to 2nd and stay in 2nd ,but you can get off the throttle and it will upshift at [...] has p 1693...

FIX posted 1/25/2002

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