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Professional Automotive Repair Technical Discussions for June 23, 2014 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2006 Buick Lucerne CXL 4.6L MIL Lamp on VIN: 1G4HR57Y16 Thanks to all in advance for your help. We have this Buick that came in with all kind of trouble codes the car runs fine now, but customer said tht car starting bucking and shacking real bad and then check engine light came on. we tried to scann the car and fo... Trouble codes: P0134 (Ho2s circuit insufficent bank 1), P0154 (bank2), P0141 (Secondary air injection incorrect air flow), P1133 (Ho2s insufficent switching), P1153 (Ho2s circuit open), U0101 (Lost conn with module tcm) |
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| 2003 Chevrolet S10 4.3L Master Cyl VIN: 1GCDT19XX3 I need help with this truck, came in with pedal sinking to floor, Put new master cylinder on, and now it is still sinking to floor. bled all 4 wheels no air, re-bled master no air. plug master cylinder and the pedal is hard no sinking. Unplugged the ABS unit i... |
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| 2006 Chevrolet Silverado 1500 LT 5.3L engine VIN: 2GCEK13T96 thanks in advance 06 chevy 1500 5.3L truck was towed in for reduced power light there are to many codes to list but im sure they are caused by the problem witch is when you turn the key off and take it out of the switch the engine stays running it always has 1... |
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| 2006 Chevrolet Silverado 3500 LT 6.6L Low Power VIN: 1GCJK33D16 This truck set code P0087 on acceleration. Watching the fuel pressure the actual never gets above 10k psi. (desired may be at 17k psi.) The code sets and the fuel system goes to default. With codes cleared and at idle the fuel pressure matches the desired. I c... Trouble codes: P0087 (Fuel Rail Pressure Low) |
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| 2008 Chevrolet Colorado LT 3.7L 1-2shift Ok all you trans guys and grils out there,hoping you can shed some light on this for me?Boss tells me to remove and install a new valve body on this 2008 chevy Colorado 3.7L.Came from some other shop that rebuilt it 4l60, so I do as told get new valve body wit... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2007 Chevrolet Silverado 2500 HD LT 6.6L Starting VIN: 1GCHK23697 The Replacement BCM was the source of the remaining problems I had it warrantied at local dealer where I purchased and after programming and setting up replacement BCM WOOOOO HOOOOO it runs. Talked to customer tonight when he picked up and it was parked next t... |
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| 2009 Chevrolet Silverado 1500 LT 5.3L Poor Idle Quality, Hesitation, Surge, MIL Lamp on VIN: 1GCEK29019 Thank you for all the great ideas and information. Customer has been unable to leave it overnight for me and has mentioned that it has not been acting up nearly as much lately. I guess this is going to be one to tackle this spring when it gets colder. Tha... Trouble codes: P1400 (Cold Start Emission Reduction Control System). |
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| 2009 Chevrolet Traverse LT 3.6L Various warning lights pop up, engine shuts off VIN: 1GNER23D69 After replacing the radio as well, because it would turn off and on while driving. I believe the vehicle is finally fixed. It turns out that whenever the customer would have a passenger in the front seat the lights would come on. I sent her to the dealer fo... |
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| 2010 Chevrolet Silverado 2500 HD LT 6.0L MIL Lamp on VIN: 1GB3CVBK7A thanks for all the replies i started isolating ckts that the ecm relay powered. found when i removed the o2 sensor a fuse my 5v would come back, some where in the harness those 5v ref wires are shorted to the two pink wires off the fuse for the upstream o2 sen... Trouble codes: P0106, P0107, P0453, P0523, P0461, P0690. |
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| 1998 GMC Safari SL 4.3L Hesitation, Misfire VIN: 1GTCM19W0W Iam puzzled with this one pinned the crank and camshaft sensors out I don't know if it coincidence but it started to run good again and it had not done it I a week but I have a felling that's it's going to be back thanks for all the help guys Trouble codes: 300 (Cly 2 14545), 300 (Cly 2 14545). |
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| 2006 GMC Envoy SLE 4.2L Hesitation VIN: 1GKDS13586 I dident check all the TSBs related to this. I have advised the customer on what needs done and will see what happens and will update if they decide to put updated parts on vehicle. Thanks Again Trouble codes: P0300, P0301. |
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| 2009 GMC Savana 3500 6.0L Charging VIN: 1GDJG31K49 tHIS IS A TWO WIRE CONNECTER. ONE OF THE WIRES WAS BROKEN. IN CERTAIN POSITIONS IT WAS FINE. A REAL NEEDLE IN THE HAYSTACK. THANKS FOR THE HELP. I HAD TO WALK AWAY FROM THIS ONE AND COME BACK TO IT A DAY LATER. SORRY FOR THE DELAY, I WANTED TO MAKE SURE IT WAS... |
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| 2002 Oldsmobile Aurora 3.5L starter VIN: 1G3GR64H62 Hello people I apologize for the wait but I just fixed this car this morning.I had to put this car on back burner and get my other work done. I did not realize when I asked for help that this had an aftermarket alarm system installed. I disconnected it afterw... |
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| 1999 Pontiac Grand Prix GTP 3.8L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, MIL Lamp on VIN: 1G2WR5210X Hey folks, thanks for all the response to this head scratcher! The culprit turned out to be the ignition control module. When testing the 18x crank sensor signal, I found that it dropped about 1.5 volts between the icm and pcm. Swapped for a known good icm ... Trouble codes: P0336, P0243. |
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