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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 7, 2012
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Open Help Requests for GM
Help Request Answers
2000 Chevrolet C3500 5.7L Hesitation VIN: 1GCGC34R0Y
This vehicle has plenty of trouble codes. It does have a terrible driveability problem. When it is started up it will idle very high and finally idling down. When it is started and takes off it will bog down and pop back through the throttle body until you rea... Trouble codes: P0101, P0122 (Tps), P0404 (Egr), P1122 (Tps)
2006 Chevrolet Cobalt SS 2.4L MIL Lamp on VIN: 1G1AM58B26
With an 18% TPS reading at idle (750) and a P0121 code I replaced the Throttle Body with TPS. The new TPS reads 8% at idle but the idle runs up between 1800 and 2700 RPM by itself. After clearing code the P0121 is gone but a new P0507 code is set for Too High ... Trouble codes: P0121 (TPS Sensor), P0507 (Idle Too High)
2002 Oldsmobile Alero GL 3.4L engine VIN: 1G3NL52E22
We have a 2003 Olds Alero with the 3400 series engine. Customer states that approx. 1 month ago the check engine light came on and it was code P0301. Customer changed plugs, wires and replaced the coil for cylinder 1. Car seemed to run okay but problems at idl...

Fixes & Summaries for GM
Fix/Summary Answers
2005 Cadillac CTS 3.6L HAVAC floor vents VIN: 1G6DP56735
Hi every one, as I suspected from the noise and the location of the sound It was the mode servo. I work most on imports, and i needed some feed back. As must of you said it was the servo mode actuator. I noticed the noise would go away as soon I switched from ...
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