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Professional Automotive Repair Technical Discussions for April 28, 2016 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2012 Cadillac Escalade ESV 6.2L Misfire VIN: 1GYS4GEFXC Used car lot truck.misifre active cly 1,4,6 and 7. All active management system clyinders.dash reads 9 psi at idle when hot and 2000 rpm 23 psi max.too low for the ative fuel management.we have done alot of lifters and cams for this system , every one we did h... Trouble codes: P0300 (Multi cly mifire), P0521 (Oil pressure perforamnce), P21A0 |
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| 1998 Chevrolet S10 LS 4.3L Mechanical VIN: 1GCCS19X6W This truck turned off running, I did all the tests above and also changed the distributor cap and rotor, still won't start, cranks but won't turn on. Put in scanner, no codes. |
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| 2002 Chevrolet Silverado 2500 6.0L 4 wheel drive VIN: 1GCHK24U82 This truck has a manual shift transfer case and the 4 wheel drive light in dash is always on when key is in run position,even in 2WD.The front axle actuator sends battery voltage to PCM when 4WD is engaged and then PCM tells instrument cluster to turn on light... |
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| 2006 Chevrolet C4500 Kodiak C4U042 6.6L Excessive Emissions, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GBE4C3236 I am learning diesel on my own and found one i have not ran across yet. vehicle came in with bad injector knock. and black smoke. at idle and higher rpm. Customer asked for new injectors. but i pulled. codes p0540 p0116,p0118,p0090. I found the coolant temp se... |
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| 2006 GMC Yukon SLT 5.3L Abs VIN: 1GKEK13T26 Have a 2006 GMC Yukon, C0279 with Precharge Pump Circuit. We have followed trouble charts with no luck, results saying to replace EBCM. Have replaced EBCM 3 times. Have intermittent issue with EBCM not reflashing after replacement. Precharge pump turns on duri... |
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| 2006 GMC Sierra 1500 SLE 4.8L MIL Lamp on VIN: 2GTEC19V16 Pease read entire message. This Truck is a true nightmare truck that will not show a problem but tosses a repeated p0054 and p0060 always at the same time and together. At initial diag I checked wiring and fuses and sensors them selves with zero problems found... Trouble codes: P0054, P0060 |
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| 1993 Pontiac Grand Prix LE 3.1L Surge, Stall VIN: 1G2WH54T1P OK, Here we go, long time customer brought in his low mileage Grand Prix for surging problem, stated will also buck once in awhile at freeway speeds. test drove vehicle with no customer stated symptoms, went through all the normal checks, smoke test, IAC, TPS,... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2004 Buick Rendezvous CX 3.4L MIL Lamp on VIN: 3G5DB03E04 We are recommending a dealer O2 sensor.Most of the replies are pointing in that direction.With it going into open loop at highway speeds and only happening about every 6000 miles we can't find any other reason.We did not find any contamination on the old sens... Trouble codes: P0131. |
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| 2012 Chevrolet Malibu LS 2.4L No Start VIN: 1G1ZB5E09C Thanks to everyone, the scope idea worked well once I got a low amp clamp. Replaced fuel pump and the grey wire from fuel pump relay that I thought was brown and glanced over it, brighter light and more coffee made it shine like a bolt of lightening! Repaired ... |
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| 2008 Saturn Aura XE 2.4L Module VIN: 1G8ZS57B98 This vehicle is fixed. We ended up putting a new column in it and it programmed perfectly. Thanks for all the help |
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