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Type: Posts; User: b717doc

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  1. 1985 GMC S-15 mystery challenge......who can figure THIS out?

    Bought a 1985 GMC S-15 pick-up about a year ago, MINT condition, 2.8 liter engine, new carburetor, fresh overhauled engine and tranny, ran like new...Developed a pretty significant oil leak from rear...
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    Definitely engine oil....and ALOT of it...I found...

    Definitely engine oil....and ALOT of it...I found a shop that says they will "pin-point" the source of the leak for me, then I could go from there...Truck sat there for 3 days before I got a call...
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    1985 GMC S-15 engine swap?

    1985 GMC S-15 has a 2.8 V6. Want to put a 4.3 liter V6, as everyone says that's an excellent replacement engine....My question is will I have to have another transmission, or will my original...
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    1985 GMC S-15 Dillema....Need help

    My 1985 GMC S-15 pick-up is in MINT condition, and I really love that little truck, but it has become a HUGE problem for me....It has a recently re-built (15k miles) 2.8 liter V-6 in it, that started...
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    Located TSS sensor after O'Reilly auto parts...

    Located TSS sensor after O'Reilly auto parts showed me a picture of it, attached a vacuum hose that actually had suction on it to the sensor, transmission shifting perfect now, goes into 4th or...
  6. Attached vacuum hose to TSS sensor on left...

    Attached vacuum hose to TSS sensor on left fender, a hose that actually had suction on it, drives like a new truck, all shifting normal, cruises at 70 mph!
  7. 1985 GMC S-15 Sierra Classic 2.8 shifting problem

    1985 GMC Sierra classic, 2.8 liter V6, 3 speed overdrive transmission (700-R4 I think). The engine has been rebuilt by Jasper engines here in Georgia, as well as the transmission overhauled at the...
  8. Its all good......thanks for all the input....

    Its all good......thanks for all the input....
  9. UPDATE: AAMCO shop called, says they can't find...

    UPDATE: AAMCO shop called, says they can't find anything wrong with the transmission....valvebody working just fine, but agree that the truck has a problem...The 30 year experienced tech drove the...
  10. UPDATE: The fine gentleman at the AAMCO shop...

    UPDATE: The fine gentleman at the AAMCO shop called later in the afternoon, says his 30 year transmission specialist can't find anything wrong with the transmission....valve body works fine, as...
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    Taking truck to AAMCO tomorrow...manager says...

    Taking truck to AAMCO tomorrow...manager says he's familiar with the truck and transmission, says the valve body either needs repair, or replacement...maximum cost worst case scenario is $375,...
  12. URGENT Transmission help needed (1985 GMC Sierra Classic, 2.8 , 3 speed OD AUTO

    Really in a bind with my 1985 GMC Sierra Classic 2.8 liter 3 speed automatic overdrive....I bought the truck about a week ago, and the previous owner, who bought the truck new in 1985 (he had the...
  13. 1985 GMC S-15 pickup shifts into overdrive early

    Greetings,
    I've just purchased a 1985 GMC S-15 "Sierra Classic" pick-up, and the engine and transmission has supposedly been rebuilt about 7 years ago, but the vehicle has been sitting pretty...
  14. Thread: Newbie Member

    by b717doc
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    I have a rather "Urgent" situation with my truck,...

    I have a rather "Urgent" situation with my truck, the 1985 GMC Sierra Classic, that I can't seem to get an answer from any other threads...Im sure there's someone here that is familiar with my trucks...
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    First 70 mile drive to work today, she seems to...

    First 70 mile drive to work today, she seems to be shifting okay now, around 55 mph, depending on grade...She'll downshift around 58 going up a slight grade on the interstate....Still would like to...
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    1985 S-15 Shift speeds?

    I've just purchased a 1985 GMC S-15 pick-up from a neighbor...says it has a freshly rebuilt engine and transmission, 2.8 litre automatic....Im not sure the transmission is shifting properly...all is...
  17. Thread: Newbie Member

    by b717doc
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    Newbie Member

    Greetings all... New member here from Gainesville, Georgia, and also a new GMC owner....See, wha hat happen was....I was simply going on a short fishing trip in my 2003 Chevy Cavalier that my dear...
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