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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 13, 2011
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Open Help Requests for GM
Help Request Answers
1991 Buick Park Avenue 3.8L Caliper / Rotor VIN: 1G4CW53LXM
Hey, and thanks for the time you took to look at my request. This car will, on occasion, have the left front brake drag. It only does it after driving a whilee and not all the time. After sitting it will go away and may or may not come back for a while. I've r...
2005 Cadillac CTS 3.6L Electronic VIN: 1G6DP56765
This Caddy starts and runs fine until you put it in gear (any gear) and it stalls. When it stalls parts of the dash go out. check engine lite, battery indicator and odometer. They all come back on when you put it back in park. Will only start in park (not neut...
1998 Chevrolet Blazer LS 4.3L Tcc VIN: 1GNDT13W8W
The TCC will only lock up one time during a key cycle. There are no codes. Previous shop has replaced the PCM with two others. I did confirm that the used PCM in it now has the current calibration. When you drive this Blazer at a normal cruise, you can feel ...
1999 Chevrolet Tahoe 5.7L abs VIN: 1GKEK13R6X
when driving rear brakes lock up under normal braking rear shoes are not to tight pedal is good reed on here about screens being pluged were are to screens anyone know
2001 Chevrolet S10 4.3L MIL Lamp on VIN: 1GCCS19W91
Help folks. This one stumps me. The vehicle came in for poor gas mileage and CE light on. Code P0341. Cleared, but returns instantly. CMP offset showed -9 degrees in data. The vehicle desperately needed a tune up also, so I recommended a complete tune up and C... Trouble codes: P0341
2001 Chevrolet Suburban 2500 6.0L high idle VIN: 3GNGK26U31
Throttle body is clean, Coolant temp seems ok, tps ok, intake air temp ok. Idle is normal on cold start up for a aplit second then goes to 2000 rpm, idle creeps up to 3000 rpm as engine warms, can block off iac passage in throttle body and idles drops to 400 r... Trouble codes: P0507
2001 Chevrolet Silverado 2500 HD 6.6L Excess crankcase psi VIN: 1GCHK23191
Hi fellow techs and thank you in advance for the thoughts. Kinda stumped on this one. Have called several GM dealers for advice and all were useless. Vehicle came in for low oil/pressure complaint. Customer stated he added 7qts before bringing to us. Checked ...
2001 Chevrolet Venture LS 3.4L Cooling Systems VIN: 1GNDX03E41
I have oil in the cooling system.There is no water in the oil at all,i drained the oil it was clean.I flushed the system twice and replaced the radiator,thinking it was the transmission cooler.I put dye in the oil.It showed up in the cooling system.The engine ...
2002 Chevrolet C-Series Kodiak C6H042 8.1L No Start VIN: 1GBJ7H1EX2
Truck was towed in for no start. we have just 1 spark on crank & 1 injector pulse on crank. replaced both the cam & crank sensors. Checked with a lab scope & have a good square signal from both the crank & cam sensors. replaced the computer still no spark or i...
2003 Chevrolet Silverado 2500 HD LT 6.6L Excessive Emissions VIN: 1GCHK23137
Truck started to have light smoke from exhaust at idle starting at 148,000 miles you would'nt have noticed it unless you were really looking for it. Now at 160,000 miles and after a drive on the freeway of about 50 miles you can see a ton of white smoke at idl... Trouble codes: P0404 (Egr performance out of range)
2007 Chevrolet Equinox LS 3.4L MIL Lamp on VIN: 2CNDL13F07
Hi hope to get some help on this one has a po300 but cylinder 6 is missing more then the rest moved wire plug no change even changed the wires on the coil no change number 6 misses. counts miss all the time do i have a vacuum leal like the old style or a bad i... Trouble codes: P0300
2007 Chevrolet Colorado LS 3.7L blower moter VIN: 1GBDS14E77
blower moter will stope working some times then come rigt back on
1998 GMC Sonoma SLS 2.2L No Start VIN: 1GTCS1448W
Hi every body. I am begging for your help to solving this problem. This truck was running OK when at sudendly lost power to a full stop and did not start any more. was towed to our shop and we are looking at it. So far thi's what have been done and checked: Th...
2002 Oldsmobile Alero GL 3.4L 1-2 Shift VIN: IG3NL52E42
This car will spend pretty much all day in first gear if you keep the throttle wide open. As soon as you back off, it will shift into second. I'm wondering if there is a sticking ball valve or solenoid. The trans fluid was just a bit low and didn't smell burnt...
2007 Pontiac G6 GT 3.5L no crank VIN: 1G2ZH57N77
Hello fellow techs ! this is a strange one, from out of the blue the car would not start,the ignition key turns, all lights on the dash come on, but no crank. The owner had another ignition key brought from home - no difference. We changed the battery in the ...

Fixes & Summaries for GM
Fix/Summary Answers
2007 Cadillac DTS L 4.6L r/f low-beam VIN: 1G6KD57Y87
OK.I called my local GM dealer, said there is no TSB on lighting, however a new light assy is $750. so I will try the idea of swapping the HID controllers from side to side. and replacing the missing splash-shields.next time up will be on the 4th. if I dont bl...
1986 Chevrolet Camaro Z28 Iroc-Z 5.0L Cluster VIN: 1G1FP87H7G
Sorry Guys, it isn't fixed yet. The owner (mySon) didn't want to wait any longer for his first car. There were a lot of posts suggesting ground problems and wrong bulbs. I removed all the exterior bulbs one at a time with no luck. I added grounds to the cl...
1999 Chevrolet Tracker 2.0L Engine VIN: 2CNBJ13C1X
Of the responses, Rod's made the most sense, but it didn't fix the problem. I loosened all the mounts, ran it through the gears and then retigtened the mounts with little change. Undid torque converter with a noticible change, but no cure. The lady who owns it...
1999 Chevrolet Silverado 1500 5.3L No Start VIN: 2GCEK19T6X
Thank you for replying to this post. I ended up replacing the vcm with a factory unit. Before actually installing vcm in the truck i checked continuity from pin 19 to the case of the vcm and had an open between the two. As I mentioined the original vcm had ...
2000 Chevrolet Monte Carlo LS 3.4L Passlock VIN: 2G1WW12E0Y
So the fix turned out to be the pink wire from the starter relay to the abs/pcm fuse was shorted right by the back of the fuse box on the edge of the metal dash frame. Repaired the wire and everything works fine.
2005 Chevrolet Equinox LS 3.4L Cooling fan VIN: 2CNDL13F85
Everyone was pointing to the compressor. That is what fixed this vehicle. It appears that it was leaking internally at idle the pressures were low causing no fans or cooling but when the rpm's were raised the pressures came up and the high fans came on. Thank...
2002 GMC Sierra 2500 HD 6.6L exhaust VIN: 1GTHK29192
Thanks to all who gave suggestions. The smoke was not coolant or engine oil, was fuel. The #3 injector cmd was at 0 others were at 29-31. On one of the road test I got a check engine light with code P1241 Injector #7 output circuit. Recommended all 8 injectors...
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