why will the transmission not shift into high gears

Asked by 57wmw 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.

4 Answers
4,695

Josh answered 9 years ago

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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GuruGC6N answered 6 years ago

Dash light on, fluid ok, no smell, fluid registers on dip stock slightly above hash marks cold. Thanks

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Guru9NL48 answered 6 years ago

Hi got 02gmc Sierra 1500 4X4 reg cab 4.8 I changed transmission and it go into drive? If you can help me call me 607-684-4175 . I wish people would do over haul on my truck make my life easier lol sucks sitten home .grrr Richard peace.I. hard working man I have hitch ride or take bus sucks donkey balls lol

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Wildbilly117 answered 6 years ago

I have the same problem with my 99 Silverado 1500 4.3. no light code about the transmission the fluid level is good and not terrible condition. No smells or nothing. I was thinking solenoid or maybe clutch packs. Idk I'm just a home garage mechanic

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