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Professional Automotive Repair Technical Discussions for August 5, 2015 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1989 Chevrolet K1500 Cheyenne 5.7L NO Upshift VIN: 2GCEK14K0K I was driving this pickup when issue started. I had stopped at a traffic light and when I started to drive it would not up shift I tried to down shift and then manual up shift and no difference. The truck has reverse and first gears only. I have removed the go... |
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| 2005 Chevrolet Blazer ZR2 4.3L Excessive Emissions, Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1GNCT18XX5 Hi techs: this blazer came in and is running rough. hooked up scan tool and got code po300b ramdon misfire. check for fuel and spark on all cylinders. fuel pressure is good and good spark on all cylinders. vehicle has new plugs, wires, dist. cap and rotor from... |
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| 2007 Chevrolet Tahoe LTZ 5.3L Air bag D de |
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| 2012 Chevrolet Express 3500 4.8L test battery alternator and starter. VIN: 1GB0G2CA3C Hey fellow techs,We have this Express that will not crank for the customer intermittently. they stated it does it only after it has been running for a long time. We have checked every thing in the starting charging system. The vehicle has no DTC's. The company... |
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| 2010 GMC Yukon XL 1500 Denali 6.2L stabilitrak VIN: 1GKUKMEF8A This is an odd issue, while driving the customer states that the stabiltrak light will come on along with the abs light and the door locks will start to cycle constantly. This is a very intermitten issue and during 250 miles of driving i have got it to happen ... |
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| 2000 Saturn SL1 1.9L cat unready VIN: 1G8ZG5282Y Hello, This Saturn at idle is at -30 stft -40 ltft, Looked everywhere for a vacuum leak, sprayed a few times while monitoring the front 02 with no luck. replace the fuel injectors witch made it slightly worst. map reads 1.20v at 700 rpm. at 2000 rpm the stft g... |
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| 2003 Saturn L300 3.0L Poor Idle Quality VIN: 1G8JW54R13 We have replaced the previous engine due to timing belt failure. Currently the replacement used engine will immediately rev to 4000 rpm. No codes are being stored. Key On/Engine off TPS% is 17% with gas pedal depressed and 98% with gas pedal fully depressed. ... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2013 Chevrolet Traverse LS 3.6L No Start VIN: 1GNKRFED6D I used the excellent feedback from several members who mentioned the well-known problem of windshield OR sunroof drain tube leaks getting into the IP fusebox. I then used the new "no shut off" symptom to find this problem. There was a 9 volt feedback to th... Trouble codes: P0606 (P069e-), P069E, P2534. |
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| 2008 GMC Acadia SLE 3.6L Poor acceleration VIN: 1GKER13708 Customer declined repairs. What we have gathered from our accumulation of data is that the timing is out. We had a known good Acadia come in this morning and we were able to compare most data (we couldn't communicate with her PCM unless it was on Global OBD 2 ... Trouble codes: P0330 (Knock sensor b2 open or shorted circuit). |
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| 1999 Pontiac Sunfire SE 2.2L theft light Thanks to all who replied. Unfortunately the information was widely varied and without much consensus. It seems that my original thoughts were correct that this system is actually not very reliable and very expensive to repair, often without satisfactory resul... |
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| 2004 Pontiac Grand Am SE1 3.4L caliper VIN: 1G2NF52E64 Ok, this one is fixed. Most of you hit on the nose. I first pulled up on the brake pedal and heard a pop sound and after that the brake pedal was even a little better. I then remove the brake master cylinder and had seen where the push rod was misaligned. Rein... |
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