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Prev Professional Automotive Repair Technical Discussions for December 20, 2011
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Open Help Requests for GM
Help Request Answers
2008 Cadillac Escalade 6.2L seat heaters VIN: 1GYEC63868
The drivers seat blowers do not work. This car is from a used car lot, and was just purchased from an auction. It also is the owners wife's car. When we did our initial check, we found enough food crumbs and left over spills to feed a family of 4 for a week, u...
2001 Chevrolet Silverado 1500 5.3L dash lights VIN: 1GCEK19T31
This silverado has burned three headlamp switches.Only the dimmer circuit is affected. the connector is clean & tight. the headlights work fine. Just the dimmer circuit.
2002 Chevrolet Silverado 1500 5.3L abs VIN: 2GCEK19T82
vehicle came in with brake squeak and braking normally. found that pads were done so replaced pads and rotors took it on a test drive and everything fine. customer came in the next day with a pedal problem. when you brake the pedal pulsates and get hard and it...
2003 Chevrolet Silverado 1500 5.3L Misfire, MIL Lamp on VIN: 2GCEK19T33
this vech is an auction truck we replaced the fly wheel cracked. also replaced fuel filter and a kinked fuel line.both o2 sensors before the cats. fuel psi reg leaking. plugs wires and a coil pack. and fixed the gio3 ground for the pcm. when the computer goes ... Trouble codes: P0300, P0301
2006 Chevrolet Silverado 1500 LT 5.3L Stall VIN: 1GCEK14Z96
Just installed a "live" hydraulic system on this truck, when the hydraulic system is running over relief at idle speed the engine will stall. Then engine acts like it does not sense the load. I understand this is not a problem caused by the factory system but ...
1999 GMC K3500 Sierra SL 7.4L 2nd gear VIN: 1GDJK34J8X
truck will start off in first and shift fine for about 5 min then it looses controll of the epc solnoid it drops off to 0 percent and 0 amps on my scanner . it then starts shifting hard and neuturals out in 2nd causing it to down shift into 1st again . if you ...
2007 GMC Yukon Denali 6.2L Hesitation, Misfire, shudder VIN: 1GKFK63897
thanks for all the responses in advance. this one is kinda strange and is a ex boss of mine. the vehicle misses or shudders at 1250-1700 rpm at cruise or on accel. 95 percent of the time. no codes, mode six shows no misfires, all data in trans and engine looks...
2000 Saturn SL2 1.9L Surge, Cuts out, Misfire, MIL Lamp on VIN: 1G8ZK5274Y
Vehicle came in with cel and misfire after vehicle warms up. Found several computer codes p0130 0134 0300 0326 0340 0341 0731 1133 1584 1599 1624. Cleared codes and drove vehicle first code to come back and only code was p0130. Unplugged o2 sensor 1 vehicle ru... Trouble codes: P0130 (O2 sensor), P0300 (Misfire)
2002 Saturn Vue 3.0L Compressor Clutch Signal VIN: 5G2C263B12
This vehicle came from another garage after they installed a new hvac control head, resistor and blower motor. They were unable to get the blower motor to work properly on all speeds. Upon inspection we found a power supply wire to blower motor was burnt insid...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Chevrolet Express 2500 4.3L No Start, Stall VIN: 1GCFG25W9V
Laneard was the winner, there was a plug on the transmission mount beam that had the gray wire melted & was bare, I repaired the plug & now the problem is gone! ( vehicle fixed ) Thank You for all that e-mailed me!
2000 Chevrolet Prizm 1.8L Poor Idle Quality, Cuts out, Stall VIN: 1Y1SK5484Y
update finally!!! replaced maf veh runs fine even though idle readings were at 2.1 2500 did rise normally but we didnt have a spec for that rpm, but was well over 85% increase... thanks to all good advise... merry christmas everyone!!! Trouble codes: P0300, 303 (3 missfire), 171 (lean 02 0.00 - 0.10).
2002 Chevrolet Tahoe LS 5.3L Drive-axles VIN: 1GNEK13Z82
I'll have to repost this but what we have done to it is: Wheel Alignment, new front axles, remove front drive shaft and front diff actuator, new front diff. Still front wheels will bind like it is in 4x4.
2005 Chevrolet Silverado 1500 4.3L Misfire
Many thanks to all who responded. I knew that the problem was in the distributor but living in a very rual area and no dealerships within 25 miles I am almost forced to use aftermarket parts unless I wait 1 to 2 days if I order OE parts.The dealerships in my a... Trouble codes: P0300.
2009 Chevrolet Silverado 3500 HD WT 6.0L Speedometer VIN: 1GCHK73K19
After further testing found module was at fault and not letting the motor position relearn. The module was also disabling the speedo. Replaced and programmed new module all works fine.
1999 GMC Yukon Denali SLE 5.7L abs activation @a non abs stop. VIN: 1GKEK13R5X
well,i guess you should'nt go for the cheapest part!Atleast when it comes to hub assmblies.I replaced both hubs with better/more expensive ones ,and low and behold the abs works as intended!For those of you whom read what i posted ,and didnt tell me to clean s...
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