my 2007 gmc sierra wont shift into third gearf

Asked by billywc Oct 04, 2014 at 04:26 PM about the GMC Sierra 1500

Question type: Maintenance & Repair

My 4wd 2007 gmc sierra won't shift into third gear what can I do?

1 Answer
165

HamiltonM answered 10 years ago

if its an automatic then you are screwed and will need a rebuild. or a new tranny. if it's manual, it could be in your shift assembly, or in the cogs, or in in the synchronizers. if it is an automatic, try getting the tranny serviced, flush the fluid, then maybe put some marvel mystery oil in it. put that in it anyway

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