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Professional Automotive Repair Technical Discussions for August 26, 2015 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 2005 Buick LeSabre Limited 3.8L Misfire, MIL Lamp on VIN: 1G4HR54K05 This car came in with a check engine light flashing and a code p0300. shows a miss on cylinders 3,6,1,4. but the miss can not be felt. When the car is at idle it is fine but when it gets to about 1500 rpms the check engine light starts to flash and sets code. ... Trouble codes: P0300 (Engine missfire) |
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| 1999 Chevrolet C3500 7.4L Misfire VIN: 1GBJC34J1X Misfire under load above 4000 rpm when in passing gear or hard acceleration like on freeway ramp. Did tuneup with wires and distributor cap from Chevy dealer. Misses on #4 and #5 more on 4. Fuel pressure and volume good and there are cylinders with no misfires... Trouble codes: P0300 |
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| 2003 Chevrolet Malibu 3.1L key fob VIN: 1G1ND52J13 Customers son-in-law (elderly couple) said that he could get the windows to operate by wiggling the ignition switch. Customer did get a letter for ignition switch recall but it was never taken to dealer. They told me to just fix it. I observed complete loss of... |
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| 2004 Chevrolet Suburban 2500 LT 8.1L Rotors, Abs, ? VIN: 3GNGC26G54 This truck came in for a noise which ended up being PS reservoir low due to a leaky hydroboost unit. We fixed that problem but he also mentioned that it shudders badly when the brakes are applied. We could not duplicate. He said it only happens when going down... |
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| 2007 Chevrolet Silverado 2500 HD LT 6.0L RF wheel speed VIN: 1GCHK23K37 This truck is driving me up the wall here. Comes in with an ABS light on. Took it for a drive and noticed that the RF speed sensor was reading 0mph. Scanned for codes and got these: C0040-04: RF speed sensor open C0040-26: RF frequency too low C0040-0F: RF wh... |
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| 2008 Chevrolet Silverado 1500 WT 5.3L Cruise Control VIN: 1GCEK19J38 Hi everone got a chevy cruise not working push cruise button on. light comes on in button cruise dont work has a code p0724 Brake Switch Circuit High Voltage cant find any information on this code any body got any ideals |
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| 2012 Chevrolet Express 4500 6.6L No Start, Stall VIN: 1GB6G5BL2C Vehicle towed in no start, cranked and monitored hp fuel found 500 psi cranking and 261 Koeo, frp sensor reading .51v. Replaced bias frp sensor and collected fuel sample to inspect for metal contamination found nothing, Koeo pressure stabilized at 29 psi and 2... Trouble codes: 0087 (low hp fuel) |
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| 2003 GMC Yukon XL 1500 SLT 5.3L MIL Lamp on, Reduced Power VIN: 3GKFK16Z53 Greetings y'all. I have a throttle control issue. Customer states that MIL will illuminate, power loss message on cluster showing, and no pedal response. Cycle the key and off you go. Usually happens once a day after sitting overnight. I have experienced this ... Trouble codes: P1516 (Electronic Throttle Mod VS TP Performance) |
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| 2003 Saturn LW300 3.0L Power brakes VIN: 1G8JW84R53 Front brakes & rotors were replaced a few months ago, vehicle returned with a hard brake pedal. Checked vacuum to booster, Replaced booster with no change. Thanks, Louis |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 2003 Buick LeSabre Custom 3.8L Wiper motor VIN: 1G4HP52K23 ok thanks everyone for the info what i found was that the reman and after market motors were getting water into them so i pulled back cover off and found that there was no gasket on the board so i stopped messing with aftermarket and remans installed a oe part... |
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| 1989 Chevrolet K1500 Cheyenne 5.7L NO Upshift VIN: 2GCEK14K0K Finally got truck back in to work on it. checked the governor to make sure it turns with the drive shaft and that was ok. Decided to pull the pan and checked the TV valve it was smooth and did not seem to be stuck or binding then I looked closer at the trans p... |
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| 2002 Chevrolet Blazer LS 4.3L Extended crank VIN: 1GNDT13W12 So we replaced the fuel pressure Regulator on this one and sent it packing, seems to be solved. But the last few times we looked at it the issue disappeared for about a week at a time so fingers crossed. Thanks for all the replies |
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| 2002 Chevrolet Express 3500 6.5L Excessive Emissions, Hesitation VIN: 1GBJG31F32 So I ended up putting a GM rebuilt injection pump on the vehicle. I just scribed a line line on the timing cover and put the new pump in exactly the same spot. When I checked the injection timing it was bobbing around 3-4 degrees. Spec is five or less. Good th... Trouble codes: P0183 (Fuel temp sensor A high), P0216 (Injection timing control circuit), P0266 (Cyl 2 balance fault), P0278 (Cyl 6 balance fault), P0236 (Boost sensor 1). |
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| 2004 Chevrolet Classic LS 2.2L Excessive Emissions, MIL Lamp on VIN: 1G1ND52F34 THANK YOU EVERYONE FOR YOUR HELP. IT ENDED UP BEING THE FUEL PUMP LOW PRESSURE CAUSING THE ISSUE. REPLACE FUEL PUMP AND THE FUEL TRIMS IMMEDIATELY DROPPED. Trouble codes: P0171 (Lean). |
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| 2012 Chevrolet Camaro LT 3.6L No Start VIN: 2G1FC1E33C Thank you all for the post updates, knowing well it is not possible, i conclude to close this thread. I will advise for a new module |
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| 2006 GMC Envoy Denali 5.3L ABS Module VIN: 1GKET63M26 Removed abs main fuse disabled abs system, stopped putting on traction light n accelerating problem went away accelerates every time since. Suspect abs module since at rest shows car is going at 3 mph but cust is happy he is able to drive and hasn't return to ... |
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