Vehicle make/model 1999 gmc yukon xl
Mileage = 130,000
Engine size = 5.7 liter
dash lights = check engine
codes = not yet
work done prior = just bought from used car lot
work done to repair = replaced fluid and filter
tech = sf
question = when you take off in drive it takes off but then the engine
revs and rpm are high but the car isnt going very fast





SF:
The e-mail address you left was incorrect so i could not contact you directly.
Sounds by your description that the transmission has lost 2 gear, at least. Several components
internal to the trans. can cause this. It will most likely have to come out and be disassembled.
The check engine light is probably going to have a
code p1870- trans. component slipping.
You can go to any large national parts store chain, and they can scan it for free. You never
know, you may have some other codes not related to the
trans., and can give you an idea if any other systems on this used truck are having problems.


                                                             
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