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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 30, 2015
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Open Help Requests for GM
Help Request Answers
2001 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4HP54K71
Hi, after installing new intake plenum the mil light came on with code p0135 a few days later. We tested sensor and it looked good. We cleaned the ground connector at the bell housing and gave back the car. The code returned within a few days. We rechecked the... Trouble codes: P0135
2007 Cadillac DTS 4.6L Suspension VIN: 1GEEH96Y67
this caddy limo came in with service suspension and tire monitor,,,customer isnt concerned with tire monitor but is with suspension...scanned and it has code co711 level control air pressure sensor circuit malfunction...alldata sez to clear code ,turn car on,e...
2007 Chevrolet Trailblazer LT 4.2L MIL Lamp on VIN: 1GNDT13S77
Know timing chain may be issue but looking for input on cam RPM PID not reading correctly before 17 hour timing chain job. Thanks in advance for any help. Trouble codes: P0017 (Crank/cam correlation)
2004 GMC Sierra 2500 SLE 6.0L parking brake lamp VIN: 1GTGK29U54
parking brake light on (dim). lights up fully when parking brake is set. tested power at switch - ground at switch - ok...

Fixes & Summaries for GM
Fix/Summary Answers
1987 Chevrolet Corvette 5.7L Cuts out, Stall, MIL Lamp on VIN: 1G1YY218XH
The customer never returned for repair, I wish they would have i was hoping to come up with a answer on this one. looking at the old help requests this seems to be a problem that has stumped several people. Trouble codes: 33 (maf sensor).
1989 Chevrolet Camaro Iroc-Z 5.0L high idle VIN: 1G1FP31F3K
After second call to Summit (this time to return the throttle body), customer rep. told me he sees this problem all the time! He informed me that the new unit bushings will tighten up after the engine has hot (which it certainly did). I was informed to spra...
1991 Chevrolet Lumina Euro 3.1L Poor Idle Quality, Surge, Stall VIN: 2G1WN54T6M
After finding in the archives on how to ohm check the injectors, I found resistance incorrect. two injectors were faulty. replaced them, did the idle relearn, and all is good.Thanks for all who spent the time to reply, and thanks for IATN.
1998 Chevrolet K1500 Silverado 5.7L 1-2 2-3 OD Shift VIN: 1GBEC19R6W
Thanks to all who took the Time to respond almost every one was on the money on this one the vehicle was in 4WD Low caused by a defective TCCM Transfer case control module replaced it all is well Thanks Again Manny...
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