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Professional Automotive Repair Technical Discussions for January 16, 2010 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2000 Chevrolet Blazer LS 4.3L Poor Idle Quality, Surge, Misfire, MIL Lamp on VIN: 1GNCS18W3Y this blazer has had head gaskets replaced,lifters replaced. it had a po341 code that is now gone after replacing the ign module. i do not have a scanner to check dist but it is pointing to the 6 on the housing.i have tried to move the dist back one tooth and f... Trouble codes: P1345 |
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| 2001 Chevrolet Impala 3.4L Unknown VIN: 2G1WF52E81 Hey guys, i have a 01 chevy impala 3.4 with a 4t65e tranny. it came in with the complain that the further their foot is on the gas the slower it goes. drove the car and felt like the converter was slipping. i would gas it at any speed and the car seemed to sto... |
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| 2002 GMC Envoy SLE 4.2L Charging VIN: 1GKDT13S12 This envoy came in with a battery draw found that the rear wiper was causing the draw fixed that. 30 minutes after the customer picked the car up it came back, with the drivers side power seat not working and something putting a serious load on the charging sy... |
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| 2004 GMC Yukon Denali 6.0L MIL Lamp on, SIR Inoperative VIN: 1GKEK63U64 So get this, We diagnosed and replaced the BCM and IPC on this pig. Used Mastertech VCI to reprogram and everything took fine. No-start due to the mismatch in the passcode for the vehicle antitheft (VATS). Followed the service manual to perform a VATS relearn ... Trouble codes: B1001 (vats passcode mismatch) |
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| 1999 Pontiac Montana 3.4L Misfire VIN: 1GMDX03E2X When engine is revved over 4000rpm(when kicked down) the MIL lamp flashes and code P0300(muliple misfire) results. Not sure if I can feel misfire though. Misfire history indicates only #1 cylinder misfires(1960 total count). Rev limiter cuts in below 4000rpm o... Trouble codes: P0300 (multiple misfire detected) |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1996 Chevrolet Tahoe 6.5L Trans,tech,speedo VIN: 3GNEK18R7T Greetings! This truck is back on the road thanks to all who had replied to my request and those in the chat room. It was the ignition switch that was the cause of no trans shift, inoperative tech and speedo just as those who replied said. Those on the chat ... |
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| 1996 Chevrolet Blazer 4.3L No Start VIN: 1GNCS13W1T First I would like to that all who responded to my request. They were all food for thought. What a difference a few pound of pressure can make. Many of the responses stressed adequate pressure and volume. I removed the cover on the injectors and the inject... |
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| 1997 Chevrolet Corvette 5.7L slave cylinder Well this one is out the door and down the road. I would like to thank everyone for their insight on this trans removal. It looked a lot worst than it was for sure if i did another i could shave a few hours off the total time. If this helps anytone else you ca... |
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| 2004 Chevrolet Avalanche 1500 5.3L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 3GNEK12T14 i AM EMBARASSED TO SAY THAT i FIXED THIS RIGHT AFTER i POSTED THE REQUEST FOR HELP. Several of you were right. I went back to the scanner and while the engine was acting up, I noticed that the O2 sensor was shorted dead lean while the fuel trims were adding ... Trouble codes: P0300, P0171 (Lean bank 1). |
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| 2000 GMC Jimmy Envoy 4.3L No Start VIN: 1GKDT13W2Y The injector spider unit was bad, I ran a injector balance test nd found 5 injectors that were not spraying fuel. I replaced the spider,fuel filter, drained the tank and ran a motorvac on it. The 0 pulse width while cranking threw me off track, pulse width doe... |
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| 1997 Saturn SL2 1.9L Poor Idle Quality VIN: 1G8ZK527XV I finally got back on this thing and an e-mail from russ [...] about the crank re-learn was on the money, so to speak. It got me on the right track. He said that the reason the crank wouldn't relearn was because of active misfires, and he was right.Got my bud... |
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| 2001 Saturn SL1 1.9L Cylinder head bolt torque VIN: 1G8ZH52891 Thanks for all your help, you were all correct on the service procedure for the new head bolts. I know its a simple issue but if anyone runs into this on all data, the service info for that vehicle was incorrect and the way it is stated all data wants you to t... |
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| 2007 Saturn Outlook XR 3.6L engine VIN: 767J159060 PRIMARY CHAIN WAS BROKEN CUSTOMER HAD EXTENDED WARRANTY THANKS FOR THE INFO GUYS |
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