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Prev Professional Automotive Repair Technical Discussions for April 29, 2010
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Open Help Requests for GM
Help Request Answers
2001 Buick LeSabre Custom 3.8L Misfire VIN: 1G4HP54K91
I have a mis-fire on number 6 cylinder only at idle. It will set a code in about 5 minutes. I have swaped plug, ign. wire, ign. coil and fuel injector from oposite bank with no change. Have cleaned EGR valve and replaced intake manifold gaskets and plenium gas... Trouble codes: P0300
2004 Buick Century Limited 3.1L No Start VIN: 2G4WS55J74
Hello Group, This Century came in from a collision shop with a complaint of intermittent no start. When the key is turned to position 2, security and check engine lights illuminate properly and fuel pump runs for about two seconds which seems correct. Turn to... Trouble codes: P0336 (CKP circuit fault history code), P0650 (MIL Control Circuit history code), B2957 (Security sensor data circuit low)
1998 Cadillac Catera 3.0L Accessories VIN: W06VR52R0W
New instrument cluster installed at another shop, before and after cluster installation operation of many aspects were erratic at best. No mil, no speedo, no tach etc etc. checked simple stuff, any common problems to look for?
2000 Cadillac DeVille DTS 4.6L gearshift VIN: 1G6KF5799Y
Well after successfully replacing the AC mode door actuator, we now have a problem with getting the gearshift physically moving from neutral into reverse with the engine running. You can take it out of park into reverse the first time but after putting the veh...
2005 Cadillac DeVille DHS 4.6L electric window & locks VIN: 1G6KE57Y55
This Cadillac has the left rear window and lock not working. When you put the right rear window up or down, the left rear also goes up and down from the left front and the right rear switch. The left and right rear both act as the right rear. There is NO commu...
2000 Chevrolet Blazer LT 4.3L No Start VIN: 1GNDT13W0Y
Okay guys my head is sore from beating it against the wall. This blazer was towed in it cranks but does not start. It has good spark and teh fuel pressure is 65 koeo. if i spray carb cleaner in the intake it will run until it burns off and then it dies again. ...
2001 Chevrolet Silverado 2500 HD 6.6L Hesitation, MIL Lamp on VIN: 1GCHK23111
I am working on an 01 chevy 2500hd with the 6.6. Customer had brought this truck to me for general service work, trans service, l.o.f, and a fuel filter. After repairs customer brought the truck back with a p0093 stored and says that it acts like it flairs bet...
2002 Chevrolet Corvette 5.7L MIL Lamp on VIN: 1G1YY32G72
Hi, and thanks in advance. This is my daughter and son in laws car. It is garaged and not driven in the winter. Light came on shortly before car was put away for the winter. P0410 is the only code. They have replaced both check valves, secondary air solenoid,a... Trouble codes: P0410 (Secondary air system)
2003 Chevrolet Venture Warner Bros. 3.4L hvac control head VIN: 1GNDX13E6Y
Ive got this venture van in here, that has an issue with the recirc and fresh air buttons, at random it will go from recirc. to fresh air or go back and forth, when it does this it will not let put it back to recirc. I have searched for tsb's none found, and e...
2003 Chevrolet Avalanche 1500 Z71 5.3L Heat VIN: 3GNEK13T33
Hey guys need help with this one. Got this one from another shop. Vehicle has dual zone automatic heating/ac system and customer complaint is that if you turn both knobs to full heat (90 degrees)everthing is great...verified by putting temp gauge into vent and...
2003 Chevrolet Silverado 2500 HD LS 6.6L driver information in dash VIN: 1GCHK29183
Vehicle information system in the dash is changing language from English to French, to Spanish randomly. May stay on one language for a short time but may not. Language default has been changed to English according to the manual instructions. This vehicle does...
2006 Chevrolet HHR LT 2.2L steering wheel VIN: 3GNDA23D76
First off let say thanks for taking the time to read this. This HHR is in for the steering column replacement. The problem I am having is the steering wheel will not come off. The puller I have used dozens of times has stripped its threads and this seems abno...
1998 GMC School Bus Chassis B7T042 6.5L No Start, Stall VIN: 1GBHG31F9W
Bus was going down the road and quit. Towed in and saw the injector driver module melted in one spot. Put in new one and relocated with a heat sink. Still no start. It is driving the injector solenoid on and off at about 10 amps. Lift pump tests out ok. What a...
2001 GMC Safari SLE 4.3L starts and dies VIN: 1GKDM19W51
van was running when parked, sat for 2 months, starts okay , but as soon as key goes back to run position engine quits.
2007 GMC Sierra 1500 Classic SL 4.8L Poor Idle Quality, Cuts out, Stall, Misfire VIN: 1GTEC19V97
Help just had a customer drop off his truck, wont idle and stalls,has misfire on scan tool cyl 1,3 and [...] or 8 but mainly 1&3 assumed cat was plugged pulled 02 was quick and easy ,not the problem, plugs baddly fouled plugs had replaced them first, same... Trouble codes: P0300 (multiple misfire)
1989 Oldsmobile Cutlass Supreme International 3.1L MIL Lamp on VIN: 1G3WR14T5K
This is an oldy, but goody. This car will set code 13 with almost every trip on the road. Its been that way for years. I tried 2 new oxygen sensors. As long as it is idling the oxygen sensor switches well. About 2 or 3 miles into a test drive it will switch le... Trouble codes: 13 (02 sensor bad open short)
2001 Saturn SL 1.9L Fuel gauge VIN: 1G8JW54R01
Fuel gauge, tach and lighting inop. Mileage reset to 000,000 Suspect BCM malfunction, with no codes, any help will be appreciated.
2002 Saturn L100 2.2L fuel gauge VIN: 1G8JU54F22
vehicle arrived with complaint of fuel gauge always reads full. attached known good sending unit to wire harness and gauge on dash had full range of movement from e to f. removed tank and checked sender and it did not move off full. replaced fuel sender with o...
2003 Saturn Vue 2.2L Converter Lock-Up VIN: 5GZC43D53S
Transmission was not engaging and loud noise from transmission like a bad p/s pump. Transmission was rebuild and cvt fluid and additive were used, transmission burnt clutches after road test, was removed and filter was replaced and new clutches were put in new...
2006 Saturn Vue 3.5L Mechanical VIN: 5GZCZ53476
Hey everyone, dumb question here and didnt know where to ask. We have a 2006 saturn vue with a 3.5l V6. Our snap on dealer order us in the timing belt tool kit but it will not work on the 06 3.5L. Checked the procedures out on line and the tools needed seems l...

Fixes & Summaries for GM
Fix/Summary Answers
2000 Cadillac DeVille DTS 4.6L mode selection VIN: 1G6KF5799Y
Thanks to Juan from California, he hit the nail on the head. We had to get back into the mode door actuator and found that one of the mode doors had slipped out of the white plate that held all the doors in sequence. After getting the doors back in there tra...
2001 Chevrolet Malibu 3.1L MIL Lamp on VIN: 1G1ND52J21
Thank you for all the input and put a oe cat on it but not before i did another over haul of the system.Took it on the road with scanner in tow and fuel pressure gauge on.Everything is looking good and does not have any problems outside of the milage. Thank yo... Trouble codes: P0420.
2004 Chevrolet Avalanche 1500 Z71 5.3L Noise VIN: 3GNNEK12TX
Thanks to all that responded but the customer decided to take the vehicle.He will bring it back when it gets real bad. I will defenedly update when i find the problem.
2006 GMC Canyon SLE 3.5L Cmp Actuator VIN: 1GTDT19656
Thanks to those who replied. Simple valve replacement and an oil change fixed this one up nicely. For posterity and anyone who searches: The vehicle came in with P0017 and could barely idle. Apparently P0014 is also a possibility and the symptoms can var...
1998 Oldsmobile 88 Royale LS 3.8L Temp Gauge VIN: 1G3HN52K8W
Hi Y'all! Thanks for the help. A new coolant sensor fixed this car. This car doesn't have 2 coolant sensors, it has 1, 3 wire sensor. The wiring diagram shows the signal to pcm is seperate from the signal to the gauge in the dash. The signal in the dash goes ...
1994 Pontiac Firebird Trans Am 5.7L no up shift VIN: 2G2FV22P4R
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