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Prev Professional Automotive Repair Technical Discussions for March 12, 2013
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Open Help Requests for GM
Help Request Answers
1997 Buick Riviera 3.8L Poor Idle Quality, Cuts out, Stall, MIL Lamp on VIN: 1G4GD2218V
This car is in bad shape, but this MAF codeis really a pain. According to all the tests, this sensor has a 5V signal from PCM but this car has battery voltage at sensor. Has a good ground, but nothing is reading on the signal wire back to the PCM when backprob... Trouble codes: P0102 (MAF Low frequency)
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1991 Chevrolet Camaro RS 3.1L Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, hard start VIN: 1G1FP23T2M
Camaro towed in to shop as a no start. Scanned PCM - No Code check injector with noid light & 3 injectors on right side had no noid light. Ohm check indicated one bad injector, but we replaced 2. The car started but would not stay running. Checked coil, plug...
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2005 Chevrolet Astro 4.3L Stall VIN: 1GCDM19X35
Vehicle is a 2005 Chevy Astro Van 4.3 belonging to one of my fleet customers Engine Code X No EGR Vehicle code M The vehicle has exhibited stalling for years way before we took on his business Van has 170,000 miles on it and has traditionally never turned on t...
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2009 Chevrolet Tahoe LTZ 5.3L larry1959 VIN: 1GNFK33059
customer said she put the truck in 4hi and back into 2wheel and now the service 4x4 message is on Ican put the truck in 4wheel on lift and out of 4wheel .check all fluid levels.there ok
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2000 GMC Yukon XL 1500 SLE 5.3L brake pedal VIN: 3GKFK16T3Y
Hi All Brake Masters. This vehicle came n for not stoping when trying to make a stop at 50 mph . it will stop properly at 25/30 mph. higher speed wheels will not lock or stop. First thing tech bleed the system . rear lines had very dirty/coroded color fluid a...
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2000 GMC Savana 3500 5.7L MIL Lamp on VIN: 1GTHG35R2Y
I have lean codes for Bank 1 and Bank 2. Customer says the Van has died on him at times I have checked fuel pressure at filter pump is pushing 90 psi and also checked at regulator and the pressure was a little low at 47 replaced regulator and now pressure is 5... Trouble codes: P0171 (Fuel System Lean), P0174 (Fuel System Lean)
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2005 GMC Envoy SLE 4.2L cruise VIN: 1GKDT13S25
Cruise disengagement history of D WHL SPD HI I cannot find anything on this disengagement reason Local dealer hasn't been able to help Graphed both wheel speed sensors and no irregularities when this disengagement reason comes up Please help
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2008 Pontiac Solstice GXP 2.0L No Start, Stall VIN: 1G2MG35XX8
car was running fine and stalled. Could never get it running again. engine will crank and after about 5-10 seconds it will fire on about 2 cylinders then stall. No mil. but sometimes you have a p0336 code and sometimes not. after awhile it wont even hit on a f... Trouble codes: P0336 (Ckt sensor perfromance)
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Fixes & Summaries for GM
Fix/Summary Answers
2007 Buick Lucerne CXL 3.8L No Start, Stall VIN: 1G4HD57217
Well, I'm going to close this request. The customer is still driving the car without incident. The responses I got were power, ground, and ignition switch related. Unfortunately it hasn't failed lately but when it does Iíll update this post. Thanks again for ...
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1986 Chevrolet El Camino Conquista 5.0L Heat Guage VIN: 3GCCW80H1G
Thanks for the info all. Some was right on target, some sent values for fuel tank senders and other gauges, but thanks for the time and effort.
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1995 Chevrolet Blazer 4.3L Cuts out, Stall, MIL Lamp on VIN: 1GNDT13W5S
Hello to all, I have not had this vehicle return but was able to at least verify that the exhaust cat is good. I have a sneeking suspicion that the injectors are leaking but haven't had a chance to get knuckles deep into it to verify. Thanks for all the input ...
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2000 Chevrolet Venture 3.4L Power Steering Pump VIN: 1GNDX03E2Y
Turns out I got 3 bad A1 Cardone rebuilt P/S pumps. I installed a known good [used] pump and the problem is solved. Thanks for all your help. I had to wait for the customer to return to replace the pump.
23
2003 Chevrolet Trailblazer LT 4.2L MIL Lamp on VIN: 1GNES16S63
Most replies pointed to possible issues with timing components being worn or that sludge could be blocking passages feeding vvt system. We flushed engine over 2 weeks ago and have not been able to get in contact with customer to find out if problem is correct... Trouble codes: P1345.
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2005 Chevrolet Cobalt LS 2.2L Transmission Control Module VIN: 1G1AL52F05
Hello All, Firstly I would like to thank everyone that took the time to respond to my help request. If it wasn't for you'll i would not have finished this vehicle. you led me in the right direction. After jumping pins 6 and 14 of the DLC my reading was 61ohms ...
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2007 Chevrolet Equinox LT 3.4L Will not reset 3 mon VIN: 2CNDL73F87
I would like to thank everyone who replied.ambient temp reads correctly,ect,t-stat working correctly wich let vehicle register cold starts and go into closde loop. this sukka needed 1,163mi worth of driving. My original post was wrong i could not perform evap ...
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2004 Saturn Ion-3 2.2L 1-2 shift VIN: 1G8AL54F24
FIRST OF ALL THANKYOU TO ALL THAT REPLIED.I DID FIND WHAT WAS CAUSEING THE COMMUNICATIONS PROBLEMS (U1016). IT WAS A CIRCUIT BETWEEN THE PCM AND THE TCM,AS ONE OF YOU GUYS STATED,REPAIRED THE CIRCUIT AND THAT SOLVED THE U-CODE ISSUE.REMOVED THE TRANSAXLE AND H...
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