transmission doesn't shift right. at 40 it downshifts and coasts.

What is your question?

It downshifts to 2nd hear, and if I let up, it will again shift up when I am below 40 mph. Speedometer needle bounces. Speed sensor? Transmission shift sensor? Ideas?

mover92 in Brandon WI

Mar 5, 2015

What are the best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 1996 GMC C3500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

transmission doesn't shift right. at 40 it downshifts and coasts.

What is your question?

It downshifts to 2nd hear, and if I let up, it will again shift up when I am below 40 mph. Speedometer needle bounces. Speed sensor? Transmission shift sensor? Ideas?

mover92 in Brandon WI

Mar 5, 2015

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What are the best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 1996 GMC C3500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.