Question about Chevrolet C1500
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Posted on Jan 02, 2017
DTC - 32
EGR system failure
DTC - 33 MAP sensor circuit error (signal high indicating low vacuum)
The EGR failure is causing the DTC 33 code to show up. Check the vacuum lines to the EGR valve.
Good luck and keep me posted
Posted on Nov 19, 2009
Testimonial: "Very helpful"
Code 12 is just a code telling you that you are in the diagnostic mode and it is working. Code 33 is a mass air flow error code. The computer is detecting mor air going into the engine then required at the detected rpm for more than 5 seconds. Could be caused by a faulty connection(wiring harness,ect) to a bad ECM(electronic control module) or MAF(mass air flow) sensor. Also the TPS(throttle position sensor) could be out of adjustment.
Posted on Dec 29, 2009
67 a/c pressure sensor circuit or a/c clutch circuit failure
81 brake input circuit fault
82 ignition control (IC) 3X signal error
Posted on Dec 23, 2010
Testimonial: "I'll give it a try. THANK YOU VERY MUCH!!!!"
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