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Re: Shifting at high RPM
Quote:
Originally Posted by Dead Parrot
Might consider adding a vacuum gauge to any parts order. They don't weigh much and shouldn't add a lot to a shipping charge. Many also include a 0~8 psi fuel pressure tester as well.
The kickdown switch check was a long shot but it doesn't require money to test.
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Let me try the new vacuum modulator and update you.
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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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