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GMC High Sierra




1984 GMC High Sierra

Engine Malfunction When driving Always

Q:  The 305 was rebuilt and all vacuum lines and sending units were removed. An old style hei distributor was used to replace the one that needs a computor.the problem is the tranny will not shift into 3rd.

Is this condition due to some kind of input from the engine the tranny needs to know to allow it to shift?

Other than this problem everything runs great. If it needs something from an engine sensor which one?


A:  CHECK THAT YOU HAVE VACCUM TO THE MODULATER VALVE ON TRANNY.

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1976 GMC High Sierra

Windows / Glass Malfunction Not applicable Not applicable

Q:  Sometimes when I shut the door to my truck, my window comes out of it's track. Is there anything I can do about that? How can I get the door panel off to see inside the door? Thank you.


A:  Screws and clips........ re-install glass in channel with good goop from auto supplier(or GM) and leave overnight in the fully rolled-up position....... Ed

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