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Professional Automotive Repair Technical Discussions for June 9, 2015 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2004 Cadillac CTS 3.6L power loss intermitt VIN: 1G6DM57774 This car experiences intermittent power loss while driving. All codes are history and they do not reset with symptom occurence. I notice while driving and problem present the TP indicated angle drops to 20-30% even though APP shows 100% and pedal is floored. T... Trouble codes: P1793 (wheel speed issue), C0870 (device voltage), U1000 (class 2 comm), U1016 (lost comm with ECM) |
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| 1992 Chevrolet Corvette 5.7L Hesitation, Cuts out, Misfire, pinging VIN: 1G1YY23P4N Came in with a bad (dead, non-op) ignition control module and an intermittent runnning out of power climbing long hills complaint. Replaced the ICM and went on an extensive road test where I got the vehicle to act up. It would buck, jerk and ping. It would som... |
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| 2001 Chevrolet Express 3500 8.1L MIL Lamp on VIN: 1GBJG31G51 this is a church bus,that came in for a service engine light on and lost of power.it set 2 codes,p1120 and p1638.well I have seen this b4,in the past I found the throttle body and the wire harness to be the problem and it would fix the problem.Well on this one... Trouble codes: P1120, P1638 |
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| 2009 Chevrolet Suburban 1500 LT 5.3L Starting VIN: 1GNFK26339 Customer says intermittently when he attempts to start the vehicle the starter clicks multiple times and then he loses all battery power, dash lights everything shuts down. I scanned it 1 code po513 theft key not recognized. It has newer battery which tests go... |
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| 2009 Chevrolet Silverado 1500 WT 4.8L Poor Idle Quality, Cuts out, Stall VIN: 3GCEK13C19 Hello to all. I have this Silverado kicking me hard. It got towed in with a reduced power light and stall complaint. Started right up at the shop on the tow truck. Had service engine soon light on, pulled codes found P0641 5 volt reference 1 circuit problem. C... Trouble codes: P0641 (5 Volt reference 1 circuit) |
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| 2008 GMC Envoy Denali 5.3L No communication VIN: 1GKET63M08 No communication with ebcm after attempting to re flash the module. In addition we don't have communication with ebcm and tcm. Car does run I did notice that tcm/ebcm use high speed Lan communication as well as class 2 communication not sure how it communicate... Trouble codes: U1000 (No communication) |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1998 Chevrolet Corvette 5.7L wipers VIN: 1G1YY22G0W Thanks to Sean and Mike! Easy but clear directions will do it every time!! reset motor bellcrank per replies, works perfect |
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| 2000 Chevrolet Tahoe 5.3L repeat compressor failure VIN: 1GNEC13T5Y Will summarize for now and later add a close note with long term performance. Thanks to all that replied. I've also been in communication with Four Season's Help Desk Support/Engineering. Their theory is that the air sept suction and also the ac delco ... |
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| 2005 Chevrolet Avalanche 1500 LS 5.3L reduce power mode VIN: 3GNEC12Z05 A simple test on the 5v. reference reveal that I had broken wires near the fire wall like a lot of you suggested thanks guys I needed your guidance because I was starting to get frustrated with this.it's fixed Trouble codes: P1125, P1120. |
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| 2006 Pontiac Grand Prix 3.8L No Start, Cuts out, MIL Lamp on VIN: 2G2WP55276 Let me thank all for your input, including those that chose to flame me for not being professional and shot-gunning parts (especially Robert fro Texas). When all your testing is going no where, sometimes you have to draw on your experience and replace things t... |
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