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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 28, 2015
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
2004 Chevrolet Trailblazer LS 4.2L gas gauge some times works ,radio loss of bass VIN: 1GNET16S14
the gas gauge works some times sender was replaced . New sender works the same way ,some times .The radio was working ,then loss of the bass is noted.Tried a new radio to the car with the same thing happening .This is not the Bose system with the external amp,...
2008 Chevrolet Cobalt Sport 2.4L cluster VIN: 1G1AM18B28
Vehicle came in with customer complaint of cluster gauges and lights would act erratically. Loses speedo, tach gauge fuel gauge, and get abs messages in cluster info center. Pulled lost communication codes for TCM,ABS,and, EBCM. Cleared codes and drove vehic...
1996 GMC K2500 Sierra SL 5.7L spark VIN: 1GTGK24R6T
When problem occurs has no spark coming from distributor cap and has good spark at coil. When you unplug the coil wire from the cap it and plug it back in it will start tried new cap, rotor and wires several times with different name brand stuff and problem st...
2007 GMC Sierra 3500 Classic WT 6.0L no drivability issue VIN: 1GDJK34U67
Thanks in advance. I can clear these codes and they will usually reset within 300-500 miles. I have test driven with fuel pressure gauge, pressure never drops below 62 psi. We are located at an elevation of 9200 feet. After checking iatn archives noted possibl... Trouble codes: P0171, P0174, P2A01, P2A04

Fixes & Summaries for GM
Fix/Summary Answers
2005 Cadillac SRX 3.6L MIL Lamp on VIN: 1GYEE63705
Well, thanks for all of the help. This one was confusing. We replaced the fuel tank pressure sensor because it always showed 2.5 volts, no matter what the purge command was. we assumed it was a bad sensor, stuck, but that did not fix it. It wasn't until i trie... Trouble codes: P0443 (Vent solenoid circuit).
1984 Chevrolet S10 2.8L Transmission VIN: 1GCCS14B7E
PROBLEM: new clutch wear indicated that the clutch disk was not flat. We had wear on the outer edges. We straight edged the flywheel and it was flat. FIX: replaced advance auto kit with a NAPA kit and reinstalled. Works correct now. Pedal play has improved by ...
1999 Chevrolet Metro LSi 1.3L Misfire VIN: 2C1MR5227X
thanks for all replys.customer could not wait.i was not able to check anything suggested.towed car before i could fix it. thanks again Trouble codes: P0113.
2011 Chevrolet Silverado 2500 HD LTZ 6.6L No Start VIN: 1GC1KYE89B
Customer decided to sell the truck rather than fix. while testing noticed that the low side pressure was bleeding off threw injection pump and returning to the tank and not holding prime
1999 GMC C7500 Topkick C7H042 7.4L No Start VIN: 1GDJ7H1D6X
Thanks for all the help. As most of you presumed, I had an open circuit. A couple calls to Alldata and we were able to determine that the wiring diagram on the site did not match our vehicle. We (they) found the right one and we found where there was an open b...
2006 Pontiac Pursuit 2.2L MIL Lamp on VIN: 1G2AJ55F26
Thanks to all who replied. Steve had the right answer. The ignition module was defective, and did not recognize a cam sensor input, and that sent the PCM into limp mode substituting fixed values for the o2 and generating the p1133. A new ignition module fixed... Trouble codes: P0340, P1133.
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