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Professional Automotive Repair Technical Discussions for February 8, 2016 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2005 Chevrolet C4500 Kodiak C4V042 6.6L 5th gear VIN: 1GDE4V1275 Vehicle has loss of 5th gear, Allison 1000 transmission. Pegs out at 65mph and gear desired PID never changes to 5th gear as if its not commanding it. When trying a clutch test with Tech2 it will go into all gears except for 5th and I get the error reading "en... |
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| 2011 Chevrolet Express 3500 6.0L MIL Lamp on, Not pulling in D VIN: 1GB3G2BG7B Had this van towed into shop late last week. The complaint was the vehicle would not pull in drive, it would just rev up but not go anywhere. Customer noted that when this happened the light under D in the instrument cluster would not illuminate, could put it ... Trouble codes: P0575 (Cruise control switch circuit), P0700 (TCM requested MIL), P150C, P2544 (Transmission torque request circuit), U0073 (Control module communication bus off), U0101 (Lost communication with TCM) |
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| 1998 GMC K1500 Sierra SL 5.7L abs VIN: 1GTEK19R0W Has a very soft brake pedal, almost too the floor, truck will stop. Replaced most of the system, still soft pedal, done the manual and automated bleed and then manual again, getting nothing but clean fluid. The pedal feels fine until the truck is started then ... |
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| 2001 GMC Jimmy SLS 4.3L coolant in oil VIN: 1GKCT18W51 Vehicle came in with customer stating coolant loss. Pressurized system, found lower intake leaking. Customer stated he would come back in two weeks and keep an eye on the coolant level. Customer came back two days later and stated that the leak had gotten wors... |
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| 2011 GMC Canyon SLE 2.9L MIL Lamp on VIN: 1GTG6MF95B Hello all, We have this GMC Canyon with the 2.9 engine. Has recurring p1107 code, we have replaced the exhaust cam solenoid and the exhaust cam phaser assembly. The code returns pending after a road test. Can actuate solenoid with scantool,. Engine will stumbl... Trouble codes: P0017 |
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| 2012 GMC Sierra 3500 HD SLE 6.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1GT423CG8C Hey there, any and all help would be greatly appreciated on this one. Customer brought truck to us after they had replaced the engine themselves and now it runs poorly. customer stated that after the USED engine was installed all was good other then lean codes... Trouble codes: P0300, P0157, P0137, P0171, P0174 |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1996 Chevrolet Lumina 3.1L Starting VIN: 2G1WL52M1T Thanks everyone for the fast help. We found out fuel pressure was not check, we check pressure 0psi, we started the vehicle with starting fluid. The basic was skip on this, i was so on with the security light that checking the fuel pressure was skipped. The ca... |
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| 1999 Pontiac Firebird 3.8L Misfire VIN: 2G2FS22K8X Thanks to all who responded. The miss was caused by coil number 2/5. I had thought if the coil were bad, both 2 and 5 would miss. Not true. Number 2 was not missing! But number 5 was. The fuel trim problem was caused by the leaking fuel pressure regulator. I r... Trouble codes: P0305 (Miss at number 5), P0300. |
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