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Professional Automotive Repair Technical Discussions for May 16, 2016 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2004 Cadillac DeVille 4.6L Misfire, MIL Lamp on VIN: 1G6KD54Y04 Howdy Y'all, The 04 Deville is kinda nuts. The main problem is bucking and missing at times. The car came from other shop and they had replaced the front coil pack and all spark plugs, the Cam sensor and wiring!!. It sets a code p0641 5v reference high problem... Trouble codes: P0641 (5V Ref. problem), P1106, P0108 |
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| 1995 Chevrolet S10 LS 4.3L Stall VIN: 1GCDT19W0S This one is troublesome. I can start it, let it warm up outside, then in ten to fifteen minutes, it will just die. Once, after warm up, I shut the hood for a test drive and it died. When it dies, it loses 5 volt reference to TPS. I checked all power and ground... Trouble codes: P0122 (TPS low input) |
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| 2006 Chevrolet Impala SS 5.3L Misfire, MIL Lamp on VIN: 2G1WD58C96 The vehicle was presented with several codes. p1101 air flow correlation (actual vs expected) p0171 lean bank one p0420 cat efficiency p3449 Cylinder 7 displacement on demand deactivation solenoid control circuit. the 1101 resets pretty quickly (first in pendi... Trouble codes: P1101 (Actual Measured Air Flow.... not within range of calculated air flow), P0171, P0420, P3449 |
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| 2008 Chevrolet Impala LT 3.5L Misfire VIN: 2G1WT58K28 Not sure what I am missing, car came in running rough with code p0300, inspection showed all cylinders with misfires and a dead miss on #5. Found ignition wires arcing so started with a basic tune up. Now its running fine on all except #5 still has a dead miss... Trouble codes: P0300 (Random Cylinder Misfire) |
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| 1995 GMC G3500 Vandura 6.5L Electronic VIN: 1GTGG39Y8S Help me, help me, help me! PLEASE!!! I went and did something stupid and married this GMC. Vehicle came to me not shifting. Pulled codes 85 (undefined ratio malfunction) and 86 (low ratio malfunction). Checked transmission range pressure sensor according to Mi... |
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| 2011 GMC Acadia Denali 3.6L tcc VIN: 1GKKVTED0B thanks in advance to all. we are not a trans shop but this is a loyal customer and trying to get a answer for him. I do feel a bit of a chug. customer complaint: "issue with torque converter slip during lock-up. noticeable under load in 6th gear from 45-75 mph... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2001 Chevrolet Tahoe 5.3L radio and lights VIN: 1GNEK13T61 First I want to thank everyone who replied to my help request. I followed every suggestion given and the fix turned out to be a DRL sensor on top of the dash. I found it slow to work and sometimes it did not work at all so it was going out. I replaced the sens... |
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| 2007 Chevrolet Suburban 1500 LTZ 5.3L Poor Idle Quality, MIL Lamp on VIN: 1GNFK16347 I thought we fixed the issue 180 psi compression on cylinder customer drove for two week no issues now ses light is on for misfire on same cylinder dealer says in needs a new engine thanks for all the help Trouble codes: P0300. |
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| 2010 Chevrolet Cobalt LT 2.2L Engine Failure VIN: 1G1AD5F57A Thanks to all for the helpful replies. I feel like a knucklehead, but I mis-identified this vehicle in the identification dialogue. I ID'd it as a manual trans, but it is an automatic. As suggested in the replies, the engine came out through the top, making... |
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| 2004 GMC Envoy SLT 4.2L rear blower VIN: 1GKET16524 thanks for all the info found two broken wires under the passenger side rear door sill repaired wires calibrated system all good thanks |
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| 2005 GMC Envoy XL SLE 4.2L Pressure/Return Hose Seal Install VIN: 1GKET16S45 So when completed all was fine no leaks at the rack line connections when done. I suggested in the end of the update that I took a pin & gently went around the little rubber flapper in the return line seal which opens to allow fluid flow & aside from hoping ... |
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| 2009 GMC Sierra 3500 HD SLE 6.6L Transmission VIN: 1GTHK83639 Thanks for the replies. Last time the transmission was put in the converter housing and converter were painted with silver/aluminum paint. After removing the converter it had paint washed off from converter hub weld. We also put dye in oil and could see dye in... |
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