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Prev Professional Automotive Repair Technical Discussions for July 29, 2010
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Open Help Requests for GM
Help Request Answers
2003 Buick Rendezvous CX 3.4L No Start VIN: 3G5DA03E23
I have no repair history on this one. After a hot soak on a hot day it occasionally will not start. Cranks fine, apparently has spark and fuel pressure. The other guys in the shop were able to duplicate the complaint on one occasion.They state that there was s...
1992 Chevrolet Lumina 3.1L Excessive Emissions, No Start, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall VIN: 2G1WN54TXN
Hello everybody. Maybe you can help me on this problem child. I have this 3.1 in my bay. This vehicle will start/stall. Start/Stall. If you give it a little gas it will run. As soon as you let off the gas it will stall. Then all of a sudden it will run ok for ...
1993 Chevrolet K1500 Silverado 5.7L Speedo and ECM VIN: 2GCEK19K5P
This one has me going in circles. Vehicle came in with no speedo and check engine light on with code 24 (VSS). Checked the VSS and it was open. Replaced VSS and still no speedo signal. Ran diagnostics had power and ground at DRAC module VSS signal varies with ...
1996 Chevrolet C1500 5.7L cylinder VIN: 2GCEC19R1T
The complaint is when truck sits for at least 24 hours, on start up it will miss for about 10 seconds. I have done it while watching missfire, and #1 is missing. I kill it immediately and remove plug; it has water on it, not gas. I suspect head gasket, so I br...
1998 Chevrolet Corvette 5.7L Temp Guage VIN: 1G1YY22G7W
Hi everyone, ive got this 1998 corvette. customer is saying that the temp guage is travelling to far (3/4 of the way around) customer claims its never gone past the mid point. now i did some research and it says that low fans come on at 128 celius and high fa...
1999 Chevrolet Astro 4.3L passlock VIN: 1GNEL19W7X
Came in no start. Starts then stalls right away and the security light flashes. No injector pulse after approx 1 second. Im suspecting a problem with the anti theft. Scanned computer and no codes for theft system. Tested antitheft module and had good powers an...
1999 Chevrolet Corvette 5.7L Stall VIN: 1G1YY32G3X
hi all, got this vette towed in last week with service column lock displayed, checked TSBs found 01-02-35-008 tsb had been done already with relay and harness installed. all the wires at ignition switck are cut and alarm installed with about 20 butt conectors ...
2000 Chevrolet Express 2500 5.7L Cuts out VIN: 1GCGG25R7Y
hey everybody!!!this van came to the shop recommended by another shop.they replace the engine but after that costumer complaint missing power sometimes,i did not see that happening but have the codes i mentioned,start checking for p0340,the other mechanic repl... Trouble codes: 0340 (cam sensor problem), 0132 (heated oxygen sensor), 0141 (heated oxygen sensor), 0404 (egr system malfunction)
2001 Chevrolet Cavalier 2.2L Engine cooling system VIN: 3G1JC52471
Hi need some advice here. This car came in with coolant in the cylinders and a blown head gasket. I had the head pressure tested and machined, replaced the head gasket, bolts, thermostat, and plugged rad. Sent car on its way. Two days later it returned overhea...
2001 Chevrolet Suburban 1500 LT 5.3L compressor VIN: 15455VGDJJ
replaced compressor.,but noticed it didn,t have the high pressure cut out switch house said to remove old switch. so i tried , but eventually broke the switch. trying to find out if any one knows of a part # & or a simple fix for this puppy,i h...
2003 Chevrolet Silverado 1500 5.3L elusive leak VIN: 1GCEK14V13
same as above
2003 Chevrolet Trailblazer LT 4.2L line leak VIN: 1GNET16S53
good afternoon everyone, mitchell tell me it takes 9 hrs to replaced all lines. is this true. did anyone do this truck with a line leak. the cooler lines are ok , just the presure line is leaking but would replace return too thanks
2005 Chevrolet Silverado 2500 HD LT 6.6L Misfire VIN: 1GTHK232X5
[...] Trouble codes: P2146 (Injectror postive voltage relay circuit group 1), P0307 (Misfire detected)
2005 Chevrolet Equinox LT 3.4L No Start, Cuts out, Stall VIN: 2CNDL73F75
Car was driven to our shop with a complaint of dying out. We scanned it and came up with these codes. We cleared codes and codes came back again. We do have an ignition switch that does not feel right. Seems to have alot of play but does not appear to have ... Trouble codes: P0601, P0606, U1000 (Lost class 2 data link), U1016 (u1024-), U1024 (u1064-), U1064
2006 Chevrolet Express 3500 6.0L No Start VIN: 1GBHG31U46
Vehicle came in on flat bed. Battery was dead and customer stated they tried to jump start and had no success. We put a jump box on the battery and it would turn over but no fuel pressure. Tested the fuel pump and had no power to the pump. Checked power at the...
2007 Chevrolet Silverado 3500 HD WT 6.6L MIL Lamp on VIN: 1GBJK33D77
This truck keeps setting P003A, Turbo vane position not learned. It had set a P2563, boost control position sensor performance. The truck has no drivability problems so I assume the turbo vanes are moving. I replaced the vane position sensor, but now will set ... Trouble codes: P003A
1998 GMC Savana 3500 6.5L No Start VIN: 1GDHG31F1W
Thanks in advance for your help. This vehicle wouldnt start came in from an other shop and they replaced the parts listed below, has no codes, fuel is good all the way to the injection pump, but is not getting it to the injectors. I scoped crank sensor, high a...
2003 GMC Sierra Denali 6.0L Air temp. Door or actuator VIN: 2GTFK69U03
As stated pep boys started the repair on this vehicle on a saturday when i was off. They diagnosed it as a bad a/c compressor. They removed the freon (we have no recovery machine at the moment) I assumed they were right. i replaced the compressor on this vehic...
2004 GMC Yukon XL 1500 SLT 5.3L No Start, Poor Fuel Pressure VIN: 1GKFK16Z74
2004 GMC Yukon XL originally came in yesterday with problem of stalling out while driving. After waiting 10 minutes after stalling it would start again. After looking into the issue we discovered that fuel pressure was good (41 - 42 PSI) up to the point when i... Trouble codes: P171, P174, P116
2001 Oldsmobile Alero GL 2.4L No Start VIN: 1G3NL52T61
Hello and and thanks in advance for any and all the help. first off car came to the shop as no start. good spark cam and crank senser working fuel pressure 53 KOEO found no injector pulse. checked F/P fuse it was fine pulled number 1 injector harness off found...

Fixes & Summaries for GM
Fix/Summary Answers
1994 Buick Park Avenue Ultra 3.8L Hesitation, Cuts out VIN: 1G4CU5212R
Thanks everyone for the help. It was the balancer. The rubber was coming apart.
1988 Chevrolet K1500 Silverado 5.7L Stall VIN: 2GCEK19KXJ
Hello guys, I'm amazed how many techs. responded to my help request, I'm thank full for that. As almost all of you suggested, my problem was the distributor shaft, or better said, the magnet. we replaced the distributor unit with a new one, truck is running li...
2000 Chevrolet Silverado 2500 6.0L 1-2 and 3-4 shift tcc lockup VIN: 1GCGK29U3Y
This truck is still on the road, being a fleet unit its hard to take the truck from the user and being a fleet mechanic they want everything on the road the same day. I replace the TCC regulator valve and work from there. Thanks for the info.
2002 Chevrolet Cavalier LS 2.2L Transmission VIN: 3G1JC52482
While I have not had the car act up when I have been driving, and there have never been any codes present, I think I will try the TPS , that seems to make sense to me. Thanks for all the input, I'll try to update this if it ever gets resolved. John
2007 Chevrolet Aveo LS 1.6L Hesitation VIN: KL1TD56667
THE CAR WAS SENT TO THE DEALR TO BE FIXED. THE ONLY THING THAT I KNOW THAT THEY REPLACED WAS THE THROTTLE BODY. THANKS TO ALLEN IN OHIO, JIM IN AZ, AND BENJAMIN IN AUSTRILA YOUR HELP WAS GREATLY APPREICATED. TALK TO YA SOON Trouble codes: P2138 (Acceleration pedal position sensor 12 correlation), P2106 (Throttle control system proformance---throttle limitation active), P0222 (Tp sensor 2 circuit low voltage------with tac), P2110 (Throttle actuator control system--forced limited engine speed), P0123 (Tp sensor circuit high voltage), P2135 (Tp sensor 1-2 correlation ----- wtf).
1998 Pontiac Grand Prix GTP 3.8L No Start VIN: 1G2WP5210W
2004 Pontiac Sunfire SE 2.2L Service light on VIN: 1G2JB12F74
Thanks to the 13 techs that helped. As always, I learned something on this vehicle. The service light is a "check engine light" for the BCM. Many said there could be a red button in either fuse box to reset it. There was none. Others said to turn the key on. e...
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