why will the transmission not shift into high gears

Asked by Feb 16, 2015 at 01:51 AM about the GMC Sierra 1500

Question type: Maintenance & Repair

automatic transmission will not shift into third or forth gear, run fine first, second and reverse.

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2,395

Do you have a service light on? How is the Fluid condition? Is it burnt or have any metal filings in it?

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