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Professional Automotive Repair Technical Discussions for December 1, 2016 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2002 Chevrolet Silverado 1500 4.8L MIL Lamp on VIN: 1GCEC14V72 I installed dealer sensor, same code came back. I installed front sensor from dealer same thing. Truck is keep very good condition, no missfires now or in history. Cat converter seems good did heat check and both banks are same. When i graph sensors they all 4... Trouble codes: P0140 (Oxygen sensor b1s2 no activity) |
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| 2009 Chevrolet Cobalt LT 2.2L Door Locks VIN: 1G1AT58H19 The customer's concern is that intermittently with no reliable pattern, the door locks will lock and unlock by themselves. I was not able to get that to occur. However, I keep getting a code P0573--Brake Switch Circuit 1 High Voltage (Symptom 00). I don't know... |
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| 1997 GMC C3500 Sierra SL 5.7L drivability VIN: 1GTHC33R5V WHAT WE GOT: Old truck - gets driven very little - just short trips. Vehicle stumbles right off idle. No DTC's. No misfire data. When driving, on throttle tip-in vehicle has slight-to-moderate stumble... occasionally heavy stumble. Clears up immediately by ei... |
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| 2007 GMC Yukon XL 1500 SLT 5.3L Misfire VIN: 1GKFC160X7 Got this Yukon here with active fuel management. Came in with 2 dead cylinders. Cylinder 4 and 6. Cylinder 4 had no compression. Found the lifter collapsed for that cylinder. Cylinder 6 had 150 PSI compression on the other hand. Tried swapping all ignition as ... Trouble codes: P0306 (Cylinder 6 Misfire) |
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| 2013 GMC Savana 4500 6.6L MIL Lamp on VIN: 1GD675CL8D this gmc came in with a p24a0 had replaced the #2,3,4 egt sensors because they were open not long after vehicle came back same code same 3 egt sensors open installed new dealer sensors watched scan data on the three sensors # 2 reads 500 deg key on eng off #3 ... Trouble codes: P24A0 |
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| 2006 Hummer H3 3.5L remote key VIN: 5GTDN13626 Hello. I've been working for 30years as a mechanic. My customer is complainig about remote key of his car doesn't work . I initialized the remote key following discriptions of the TECH2. but it's still not working. I asked him to bring another key then I tried... |
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| 2004 Pontiac Grand Prix GT1 3.8L No Start, Stall VIN: 2G2WP52264 Got this vehicle from another shop who was frustrated with it, so they brought it to us to see if another set of eyes might help. The car will run for about 10-15 minutes then just die and not start. The other shop had replaced all the parts and I know them to... Trouble codes: P1374 (Crankshaft Position CKP High to Low Resolution Frequency Correlation) |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1991 Chevrolet K2500 Cheyenne 5.7L No Start VIN: 2GCFK29K1M I am an idiot... I didn't really think about the Map Voltage. Unplugged it dropped down so I ignored the reading. I woke up at 2am thinking about the repair. and would a 194 or headlight make all that much difference, did I really miss a weak ground. I di... |
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| 2007 Chevrolet Silverado 1500 HD Classic LT 6.0L Crankshaft Position Sensor VIN: 1GCGC13U17 So.. This was a totally mis-built engine. First, the engine never started after build, brand new oil drained out. I found whole leaves in the pan and above the windage tray. The thrust bearing was incorrect, had excessive end play. The main and rod bearing cle... |
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| 1996 GMC C1500 Sierra SL 4.3L Hesitation VIN: 1GTEC14W1T found fuel preasure just toooo low. replaced fuel pump. now runs awesome. thanks to all that replied. |
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