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Professional Automotive Repair Technical Discussions for September 29, 2017 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2012 Chevrolet Silverado 1500 LT 5.3L Abs, Gauges, Cruise Control, Stability VIN: 1GCRKSE78C Vehicle came in with service traction control and stability lights on. Speedometer and gauges would act erratic when problem occurs but will only last a few seconds and then it will be fine for a few miles. Also if you drive with the cruise set as soon as it h... |
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| 2017 GMC Savana 2500 4.8L Accessories VIN: 1GTW7AFF7H Hello to all,customer has requested us to install electric trailer brake controller on this van.It has the 4 wires under the dash for the controller connection.According to the owners manual there is a harness tapped to the l rear frame rail that has all the c... |
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| 1987 Pontiac Firebird 2.8L Stall VIN: 1G2FS21S4H Need some help here car came in high idle, stalling and running rich went to check codes unable to communicate also when scanner plugged vehicle stalls perform all voltage and ground checks to ecm ok. checked data line ok so we replaced ecm twice with a gm rem... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2002 Chevrolet S10 4.3L Misfire, VIN: 1GCCS19W22 WELL THIS IS A WEIRD ONE BUT THE PROBLEM IS FOUND. THE CRANK SENSOR WAS PICKING UP SLOP IN THE BALANCE SHAFT PULLEY KEY WAY. A HARMONIC NOISE WOULD START TO BE HEARD AT 2500 RPM AND THAT IS WHEN THE MISFIRE COUNTERS WOULD START TO TICK OFF. AGAIN THIS VEHICLE ... Trouble codes: P0300 (Random misfire). |
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| 2006 Chevrolet Equinox LT 3.4L starter VIN: 2CNDL63F16 replace ecm and replace body control module and reprogram again |
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| 2014 Chevrolet Traverse LS 3.6L Unknown VIN: 1GNKRFED4E found that testing the data lines when acting for the correct ohms the signal was way high is the 3-4k ohms. found that the data line going to the ecm was the side with high resistance. found after removing connector isolated the tcm was sourcing the high r... |
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| 2007 GMC W5500HD Forward W5S042 5.2L Cooling Systems VIN: J8DE5B1617 THANKS FOR YOU WISDOM GUYS, TRIED MOST OF YOUR SUGGESTIONS, TO NO AVAIL. WE ENDED UP SENTING IT TO A DIESLE SHOP FOR SECOND OPPINION AND POSSIBLE MOTOR SWAP! NEVER FOUND CAUSE OR NEVER ISOLATED ONE CYLINDER, ALL TESTS ON ALL CYLINDERS CAME UP NEGATIVE. tHANKS ... |
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| 2009 GMC Savana 2500 4.8L Coolant/ Antifreeze VIN: 1GTGG25C69 Thank you for all the replies. This one ended up needing a new radiator to fix the issue. What threw us off here was the cooling system wouldn't hold pressure cold and wouldn't leak externally. Once we got the engine super hot and ran the engine long enough it... |
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