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Professional Automotive Repair Technical Discussions for March 2, 2018 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2007 Cadillac CTS 2.8L MIL Lamp on VIN: 1G6DM57T17 Setting code p0391 looking for wave form for cam correlation for exhaust camshaft bank 2 signal looks good at pcm and at sensor setting code only for one cam and engine running good after valve repair. Suspect stretched chain or some other issue but would ... Trouble codes: P0391 (Bank 2 exhaust cam sensor fault) |
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| 1990 Chevrolet C1500 Cheyenne 5.7L MIL Lamp on, pings VIN: 1GCDC14K8L This vehicle initially came in for a check engine light. The vehicle had a new EGR valve installed (ACDelco). However, the code 42 returned. The customer brought the vehicle in after his guess at an EGR valve did not work. We diagnosed the problem as a ... Trouble codes: 43 (Knock sensor) |
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| 2007 Chevrolet Suburban 1500 LT 5.3L MIL Lamp on VIN: 3GNFC16027 this has been an ongoing issue with this truck. i am the third tech to look at this truck over the course of a year. it has had the vent a purge valve replaced multiple times, and recently the evap canister now that im looking at it. i have smoked it on tw... Trouble codes: P0455 |
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| 2011 Chevrolet Malibu LTZ 2.4L No Start, Stall VIN: 1G1ZE5E18B this is the second 2011 Malibu ive had with this problem. the car starts then stalls after 2 seconds, exactly like a theft problem but it isn't. I have no theft light flashing, a different key doesn't help and I have no codes. in both vehicles ive attempte... |
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| 2009 GMC Acadia SLT 3.6L Hesitation VIN: 1GKEV33D99 Vehicle lost power while driving. Customer thought it could be converter and replaced front cat. He said it did not look clogged. Thought it might be rear cat and wanted us to check. We removed o2 sensor in front of rear cat, still ran poorly. Looked with ... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2007 Chevrolet Silverado 1500 LT 4.8L No Start VIN: 1GCEK19C47 hello-this is a summary of why i have no hair. our sister shop decided to install a cluster to fix this problem.against my objections-i am sorry that i could not update my help request but i also had a u0073-00. hi speed bus down. they installed cluster and se... Trouble codes: P1682, P2610. |
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| 2000 GMC K2500 Sierra SL 5.7L No Start VIN: 1GTGK24R3Y Thanks again for all who replied, I had another vehicle come to the shop with the same coil/ICM assembly, when I plugged it in, I had spark @ the coil secondary terminal. When I plugged the new assembly back in again,I had coil output???!! I don't know what ha... Trouble codes: P0327 (knock sensor). |
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| 2001 GMC Sierra 2500 HD SL 8.1L Transfer Case VIN: 1GTHK24GX1 Thank you very much for other IATN technician's replies on my customer's loose transfer case ring gear. Most said to just replace the transfer case or at least the side with the ring gear that had come loose. At first I was just going to order a new case ... |
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| 2005 Pontiac Bonneville GXP 4.6L No Start, MIL Lamp on VIN: 1G2HZ54Y45 Tested the Mode switch and it had internal problems. This one is located inside the transmission. Thank you for the help. Trouble codes: P0102, P1819, P0897. |
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| 2001 Saturn L300 3.0L engine management VIN: 1G8JW52R51 Turned out it was the BCM after all. As we were scoping the ECM grounds and CKP (all normal), one of my students noticed that the IC was doing some weird stuff (gas gauge would show empty, warning lights would come on intermittently or not at all during KOEO.... |
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