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Prev Professional Automotive Repair Technical Discussions for December 3, 2012
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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1999 Chevrolet Silverado 1500 5.3L Mechanical VIN: 2GCEK19T2X
This truck came in with a soft pedal. After replacing the master, bypassing the broken abs unit, and replacing all four calipers and bleeding it more times than I can count. It still has a soft pedal. The only thing left is the Vac booster. I'm stuck on this o...
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2001 Chevrolet Suburban 1500 LS 5.3L Cruise Control VIN: 1GNEC16T71
Working on a 2wd 2001 Suburban with ETC that the cruise control does not work. Followed the test on AllDATA and it just sends you in a circle. When we look on Modis, it says that the stop lamp switch is on and does not change when you depress the brake pedal. ...
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2003 Chevrolet Silverado 2500 6.0L gauges, radio, power window, power locks, 4x4 VIN: 1GCHK24UX3
The Symptoms: Instrument cluster fuel, oil, water temp and volt gauges intermittently go offline and the battery charge indicator is on. Radio is intermittent and occasionally with the key off the illumination lights will turn on and off. I expect this is rela...
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2004 Chevrolet Suburban 1500 LT 5.3L cooling system VIN: 3GNFK16T64
Vehicle came into my shop 6 months ago as a very intermittant overheating situation. We were never able to duplicate issue and customer said vehicle would overheat on the dashboard only at highway speeds. We had replaced the thermostat with a Delco unit as a p...
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2004 Chevrolet Tahoe LS 5.3L engine VIN: 1GNEC13Z54
Customer brought his Tahoe to our shop for a strong fuel smell underhood. He smells at startup and at stoplights. customer noticed this after having plugs replaced at another shop. They rechecked their work and found nothing wrong. Customer took to dealer, the...
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2004 Chevrolet Tahoe LS 5.3L Steering coulmn VIN: 1GNEK13Z84
Hey guys, I got this 04 Tahoe 4x4. I have a rotational thump noise when turning the steering wheel at slow speed or parking lot manuevers. I can feel it slightly through the column, I checked the tie rods they seem to be ok, can't seem top feel where it's comi...
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2005 Chevrolet Aveo LS 1.6L Poor Idle Quality VIN: KL1TD52665
Thanks for your help. I thought we had this one fixed but wrong again. This car came to us through the auction. It has a slightly rolling idle (2 to 3 cycles per second +/-25 rpm) with random skips in neutral. Idle in drive is pretty solid with occasional skip... Trouble codes: P0300
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2006 Chevrolet Cobalt SS 2.4L Poor Idle Quality VIN: 1G1AM58BX6
Car came in for fuel injection service and intake decarb as maintennce. Did service as asked for. Now when you start car it idles ok. Soon as you give it gas the idle wont drop less than 2000rpm. Checked for vacuum leaks or any hoses being knocked off. All app...
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2008 Chevrolet Tahoe LTZ 5.3L Misfire, MIL Lamp on VIN: 1GNFK13018
I have a Tahoe that is out of factory warranty by a month and has a compression issue on #6. With the rocker cover off, the #6 intake rocker will move when cranked over for about 20 crankshaft revolutions (i assume verifying the camshaft is ok on that lobe), t... Trouble codes: P0306
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2003 GMC Envoy SLT 4.2L reduced engine power VIN: 1GKDT13S13
The P1271 blues: this vehicle has a history of setting P1271. Itís very intermittent and I have yet to duplicate it. By the time it arrives at the shop the sensors are working normally and the repair is to cycle the ignition key off and back on the get the red... Trouble codes: P1271
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2003 GMC Sierra 2500 HD SLE 6.6L antitheft light is on VIN: 1GTHK23153
dtc B2948 keeps resetting the 12v ref voltage on the passlock sensor does not shut off with the key shutting off have tried calibration updates on bcm and a known good bcm no change... changed ecm with known good ecm same thing preformed theft relearn with tec...
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2004 GMC Sierra 1500 SLT 5.3L nocommunication VIN: 2GETK19T44
Thank to all in advance this 1500 has no communication with any modules it will start and run no acc Windows doorlocks radio cluster etc while checking bcm everything started to work but then quit not to sure where to go unplugged all easy modules checked no v...
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Fixes & Summaries for GM
Fix/Summary Answers
1997 Chevrolet P30 5.7L Wheel Bearings VIN: 1GBHP32R4V
First off, special thanks to Tom, Al, Don, Alex, Matt, Ron, Dan, Larry, Charles, Joe, Gerald, Another Dan, and Brent- You guys all agreed I was over tightening the bearings. I was able to remove the seized bearings and clean up the spindles. I am going to talk...
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2006 Chevrolet Silverado 1500 LT 5.3L power steering VIN: 1GCEK19T16
Installed new power steering box from another supplier ,seems ok at this time ,customer took vehicle a couple of weeks ago and all seems well ,if we have problem again I will advise
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2008 Chevrolet Tahoe LTZ 5.3L Lifter VIN: 1GNFK13018
This is my "second" update because they only allow for one. I just got done installing the oil manifold valve body assembly and it still does the same thing. I even squirted oil in the problem cylinder to make sure the rings weren't washed out from excess fuel...
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2007 GMC Yukon Denali 6.2L Poor Idle Quality VIN: 1GKFK63817
Well I was already into this to deep with the dealerships misdiagnosis. I tried the only thing I could think of. I disconnected the battery and left it off overnight. next morning i found all was well with idle except that if i goosed it hot it would still sta... Trouble codes: P0121, P2119, P2135.
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2008 GMC Sierra 2500 HD WT 6.6L ?? drivetrain VIN: 1GTHK236X8
Thanks for the help everyone. The problem ended up being the support (carrier) bearing. It didn't look bad but had alot more play than the replacement one.
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2002 Saturn LW300 3.0L Body control VIN: 1G8JW84R12
DEALER INSTALLED THE WRONG BCM... WE NOW HAVE THE CORRECT BCM IN VEHICLE SO I WILL CLOSE THIS REQUEST. IF IT HAS OTHER PROBLEMS, I WILL OPEN A NEW REQUEST. REMEMBER - NEVER TRUST SOMEONE ELSE'S WORK...EVEN THE DEALERS..ITS WHO IS UNDER THE HOOD THAT MAKES THE ...
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