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P0033 Diagnostic Trouble Code Discussion for January 2011

Supercharger Bypass Valve Solenoid Control Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0033
Help Request Posted
1991 Chevrolet Blazer Silverado 5.7L Poor Idle Quality, Hesitation VIN: 1GNEV18K3M
P0033: map m sensor vacuum. I inherited this when last teck quit would appreaciate any help I can get thanks. I have driven this blazer and it stumbles/hesitates under part throttle it runs good when you get on it and seems to cruise ok. no miss fires good vacuum idles a little fast at 1...
January 21, 2011