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Professional Automotive Repair Technical Discussions for February 16, 2017 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2011 Chevrolet Tahoe LT 5.3L sets DTC for DOD VIN: 1GNSCBE04B I have a 11 Tahoe Z71 that was brought to the shop for a cel and a erratic oil pressure reading on the dash gauge. Scanned the vehicle and it had a code in it for the oil pressure sensor circuit. Typical I think. I test the oil pressure at the block and I have... Trouble codes: P3400 (displacement on demand system performance) |
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| 2014 Chevrolet Impala LTZ 3.6L gauges and blower VIN: 2G1155S30E This vehicle came in for erratic gauges and at same time blower motor would quit. Scan it for codes and had a ton of U and B codes. Checked charging and starting system and battery, all good. Cleared codes and U0078 returns instantly,followed by the others com... |
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| 2004 GMC Savana 1500 4.3L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 1GTEG15X04 high fueltrims at all times...under load stft goes thru the roof on both banks,ltft goes down under load.replaced maf,distributer for po 340 code,fuel gauge sender for evap testing...need help Trouble codes: 171 (lean mixture), 174 (lean mixture) |
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| 2006 GMC Envoy Denali 5.3L Lifter / Camshaft VIN: 1GKET63M56 Engine has a dead miss on #6 cylinder, verified using scan tool that #6 is the suspect cylinder, performed compresion test and would not build any pressure 0 psi, checked another cylinder to verify gauge was working. Engine running has a distinct "rattle" und... |
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| 2008 GMC Acadia SLT 3.6L VVT system VIN: 1GKEV23798 Resealed the front timing cover and the oil pan. Everything was installed back to original position as far as vvt solenoids. after starting engine and running for several minutes the valve actuators starting making noises off and on and set codes P0011, P0021,... |
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| 2005 Pontiac Grand Prix GT 3.8L Data VIN: 2G2WS52245 Customer complaint of intermittent abs activation on dry pavement during normal braking. No stored codes in any system. Could not duplicate symptoms during test drive. Scan tool data on abs wheel speed sensors looked normal for most of the test drive. Al... |
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| 2003 Saturn Ion 1 2.2L Poor Idle Quality, Hesitation, Stall, MIL Lamp on VIN: 1G8AG52F13 Hello folks, Thanks for everything you do to help make this industry one we can be proud of. We have a students car in the Automotive Technologies department at the college giving us a fit!! Symptom: This vehicle will stumble, or hesitate coming off idle eve... Trouble codes: P1599, P0128 |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2001 GMC Jimmy Diamond Edition 4.3L Ebcm VIN: 1GKDT63W91 Installed a Cardone ebcm. Hooked up battery and done a koeo check. The module self checked and then set the dash abs light, Scanning found all data within specs. There were no currant codes and three history codes (c0227 left wheel speed signal error, co229 dr... |
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| 2004 GMC Sierra 2500 HD SLE 6.6L Cuts out, Stall VIN: 1GTHC24164 I am going to call this fixed. They have told me that it's running fine, but also, I dug into the wiring diagram and found that the Yellow wire in the twisted pair that I found rubbing is the J1939 Hi side wire. This make total sense now. Please see my updat... |
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| 2004 Saturn Ion 2 2.2L no engagment VIN: 1G8AL52F14 I removed the trans and took it apart with no apparent issues. I got another replacement (used) unit and installed it. It works properly. There has to be some Pump issue But in this case it is fixed and gone. |
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