Re: Shifting at high RPM
Quote:
Originally Posted by cadillac_al
I figured it would be something simple lol. It probable was the sticking modulator valve. They are supposed to slide out easily. I didn't think we were going to get any further with the diagnosis without an actual vacuum reading at the modulator. Happy ending anyway.
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Things are always simple, but we sometimes complicate it. Like the mechanic who told me the clutches are gone, you need new trans, and I’ve a used one.
Regarding the vacuum readings, what is the correct reading in psi?
Yeah happy ending
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1972 GMC Sierra C2500, V8-350
1986 GMC Sierra C2500, V8-454
1986 GMC Sierra C2500, V8-LS1
1986 GMC Sierra K2500, V8-350
1987 GMC Sierra R3500, V8-454
1997 GMC Sierra K2500, V8-454
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