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Professional Automotive Repair Technical Discussions for March 28, 2016 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2005 Chevrolet Suburban 1500 LT 5.3L MIL Lamp on VIN: 3GNEC16Z45 hello all, i am checking this suburban for for a large evap leak, the canister purge valve had been replaced from another shop. i did a smoke test and found that the new valve is leaking as well. i used a scan tool to activate the solenoid and it still has a s... Trouble codes: P0178 (Fuel composition sensor circuit low frequency), P0327, P0455 |
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| 2003 GMC Yukon SLE 5.3L No Start VIN: 1GKEK13Z93 My landlord who also own a shop gave me the car to vacuum it and put AC gas after the engine swap,the car was running ok, I vaccum it, charge it 1.8 lbs , I notice the ac was not running, and the flasher stays on and the relay was clicking, I try to access the... |
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| 2008 GMC Acadia SLE 3.6L Shifter interlock VIN: 1GKER13758 Hello fellow techs. I have a 2008 Acadia that does not release the key from ignition lock cylinder when it is shifted in park. My diagnosis is as follows: No codes in any module. Found the ignition lock that releases cylinder to turn key for release. Has good ... |
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| 2009 GMC Acadia SLE 3.6L A/C not cold VIN: 1GKER13D19 A/C temp varies between 45deg to 60deg low pressure drops to 20psi then the compressor will cut out. high side will be anywhere from 150psi to 250psi. the system takes over an hour to equalize pressure after shutting the a/c off. we replaced the txv valve ever... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2005 Cadillac CTS 3.6L limp mode transmission VIN: 1G6DP56735 After all the testing on this vehicle it was determined the problem was in the transmission itself with the solenoids. The rebuilder is sending us another unit to replace this failing unit. Thanks for all the ideas. |
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| 1993 Chevrolet K1500 Cheyenne 5.7L Poor Idle Quality, Hesitation, Cuts out, Stall, Backfire VIN: 2GCEK19K9P Finally got this nightmare fixed. After putting 3 distributors on it (bc the first 2 were bad out the box) the problem still persisted. I finally pulled one of the spark plugs the customer put on and saw it was one of those E3 plugs. So i replaced them with De... |
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| 1998 Chevrolet C1500 Cheyenne 5.0L Wipers VIN: 2GCEC19MXW Thanks to all with the helpful replies. Had to get away from this one for a couple of days and started back on it today. After checking all grounds, even adding some, with no success, I replaced the multi function switch. Problem solved. Thanks again, D H Smi... |
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| 2005 Chevrolet Colorado Z85 LS 3.5L Poor Idle Quality, Stall, Misfire VIN: 1GCDT13625 I am TOTALLY embarrassed!! Because the fuel pressure never dropped when the engine was running (sort of), I assumed the flow volume was ok. Never assume anything. If you spell it out it says a ass out of you n me. Replaced dirty fuel filter, put all sensors a... Trouble codes: P0300 (Random missfire). |
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| 2009 Chevrolet C4500 Kodiak C4U042 6.6L No Start, Stall VIN: 1GBE4C1999 I am sorry I am closing this so late. I forgot it was still open. The PCM relay is actually listed as Ignition 1 and 2. It turned out to be the female side pins in the fuse box that the relay plugged into. You can see one of them were spread out a bit. W... Trouble codes: P2510 (PCM relay malfunction). |
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| 1997 GMC K1500 Sierra SL 5.7L MIL Lamp on VIN: 1GTEK19R9V the head light wireing was melted. i thank all who helped me.And May God Bless All. |
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| 2009 GMC Acadia SLT 3.6L No Start VIN: 1GKEV23D79 HEY, GUYS THE FIRST THING I WOULD LIKE TO DO IS THANK YOU ALL FOR THE GREAT INFORMATION PROVIDED FROM YOU .WELL THOSE OF YOU THAT SAID PLUGGED CATALYTIC CONVERTER HIT RIGHT ON NAIL. I TOOK YOUR SUGGESTION AND WENT TO FRONT CATALYTIC CONVERTER REMOVED THE O2 SE... |
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| 2001 Saturn LW300 3.0L Lifters VIN: 1G8JW82R01 I cannot say that the car is fixed yet but the car is quiet now and we know the reason why. A long story told short and out of order, we found full oil pressure at the oil filter housing and at the oil gallery plug next to the filter housing, which is where t... |
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