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Professional Automotive Repair Technical Discussions for January 25, 2018 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2011 Cadillac DTS 4.6L MIL Lamp on VIN: 1G6KH5E6XB We have this Cadillac DTS that came in last week for a "Check Engine" light and code P0411 (Air Injection System Incorrect Flow.) It was diagnosed as needing a pump and a control solenoid, which we replaced with OE parts. A few days later the car came back... Trouble codes: P0411 (Air Injection system incorrect flow) |
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| 1999 Chevrolet Tahoe 5.7L Reverse VIN: 3GNEK18R3X 4L60 replaced with used unit, everything fine but has very hard 1-2 upshift. Dropped pan to inspect, found valve body gasket section hanging out (blown out) of valve body, ordered gaskets and plate. Replaced gaskets/plate, check balls, cleaned filters, rea... |
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| 2004 Chevrolet Silverado 2500 HD 6.6L Poor Idle Quality, Misfire This pickup came in and has a misfire that occurs at idle mainly rarely does it off idle. cylinder 3 is the one with the misfire no codes other than p1229. I've replaced the injector as well as the new injector connector pig tail. I've inspected the wiring... Trouble codes: P1229 |
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| 2011 Chevrolet Cruze LT 1.4L MIL Lamp on VIN: 1G1PF5S92B We have this lean code which is present relatively quick. Long term trim graduates within 2 minutes after resetting fuel trim. Short trim is also lean but does try to go rich but doesn't. I smoked this and found only small leak past intake so we replaced the s... Trouble codes: P0171 |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1993 Chevrolet Corvette 40th Anniversary Edition 5.7L temp VIN: 1G1YY23P6P Big thanks to all who replied. A lot of good info for info for testing. John hit this one. The control head would control temp perfectly if you set it to AC ducts. The instant you went to auto, it would go back to huge swings in temp. I'm sending it out to Au... |
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| 2010 Chevrolet Silverado 1500 LT 5.3L Excessive Emissions, Misfire, MIL Lamp on VIN: 3GCRKSE31A I will close this request because customer did not return after estimates were given. All replies are very good and my estimates were based on that information. Trouble codes: P0305 (Misfire 5 cylinder). |
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| 1998 GMC K3500 Sierra SL 7.4L distributor VIN: 1GTHK33J4W Thank you for all of your help on figuring out the problem on this GMC. Sorry it took me so long to post a fix but with several snow and ice storms we have had I could not work on this truck. What actually fixed the truck is a head scratcher. I said I had sp... |
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