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Prev Professional Automotive Repair Technical Discussions for April 9, 2010
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Open Help Requests for GM
Help Request Answers
1997 Buick Park Avenue 3.8L Power windows VIN: 1G4CW52K5V
The power windows are inop from all switches, They can however be cycled with the TECH2. After cycling the windows with the TECH2, they will operate from the master switch until the ignition is turned off. Then they are back to not working. The master switch i...
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2002 Buick LeSabre Limited 3.8L rear door window VIN: 1G4HP54K62
I have a 2002 Buick Le Sabre in the shop, came in with just the rear windows and door locks inop. Front doors operate as designed. It appears I have all the proper power and grounds at door modules. This vehicle does sit all winter is a vehicle used in the sum...
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1991 Chevrolet C1500 Silverado 5.7L intake leak VIN: 1GCDC14K4M
veh came in for smog insp failed for c.o. veh. ran well when out of fuel control and idles well when fuel pressure is manipulated to 20 psi. suspect internal intake manifold crack but not sure. need advise as to how to ck. for a crack with out having to remove...
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1993 Chevrolet Camaro 3.4L line pressure high VIN: 2G1FP22SXP
hello all. I have a 4L60 unit here that will not upshift. Line pressure is very high (125-150). (Spec is approx (75-90). Sent pump to trans shop, they said pressure regulator valve in pump "seems fine". TV cable not sticking, when pulled at idle, pressure drop...
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1997 Chevrolet C1500 Silverado 5.7L Cuts out VIN: 2GTEK19R2V
I could use some help on an intermitant falt. the injectors on this truck seem to stop fireing for only one revilution of the engine intermitantly.
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1998 Chevrolet S10 4.3L No Start, Poor Idle Quality VIN: 1GCCS19X5W
fOUND LTFT TRIMS AT IDLE AND CRUISE WAS -13 BNK1 ,-16 BNK 2 FUNNY THO ONLY THE FUEL PRESSURE WOULD DROP ONCE IN A WHILE .STICKING REGULATOR.
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2002 Chevrolet Impala 3.8L engine surge/muiss when this happens VIN: 2G1WH55KX2
This one is throwing me for a loop. This Impala came in wednesday with a surge while driivng like misfire, checked wiring to MAF, ok, check on scanner, reading 0, if I tap it than it will read, Ordered MAF, when it came in it looked old in the box, put on anyw...
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2003 Chevrolet Silverado 2500 HD 6.0L Charging VIN: 1GCHK29U33
hi guys hope you can help. the battery light on this vehicle stays dimmly lit engine off key out. charging system ok. starts fine. ground somewhere? i've never run across this. thanks in advancwe.
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2007 Chevrolet Uplander LS 3.9L MIL Lamp on VIN: IGNDV33W57
Hi guys, Here that Uplander just keep kicking my butt.Car came in with CEL onand P0172 rich bank.LT trim -5to-25 ST trim -5to-15.Engine runs and drives ok no any other codes.MAP and MAF reads correct.Composite fuel reset,clean the injectors,plugs ,wires.O2 sns... Trouble codes: P0172 (Rich bank)
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2004 GMC Sierra 3500 6.6L fuel pump/guage VIN: 1GDJK3417E
here is one for all you duramax techs.04 gmc inc.[ambulance].wont tranfer fuel to front tank.pump was dead.replaced it.still wont tranfer on its own.guage has been inop for 5 years.transfer issue is new.i can jumper relay terms.and make it pump.cluster data sh...
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2007 GMC Yukon XL 1500 SLT 5.3L liftgate VIN: 1GKFC130X7
when you push the button on the remote to open the liftgate it starts to open, it gets about halfway open then it automatically starts to go back the other way and closes. I opened it once and tried to help it past that point and it opened on up. Well when I p...
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2001 Saturn SC1 1.9L Dome, Dash Lights VIN: 1G8ZP128X2
The dash lights won't work from the switch also the dome light will only work in ON not in door mode. I can turn on these lights with a scanner. I tried a multi switch it did'nt fix it. Because I can turn on the lights with the scanner I think the BCM is good....
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2001 Saturn LW300 3.0L 2-3-4 shifts VIN: 3255632688
Hi all, just got in this saturn with nice shifts 1-2 but no other shifts available. Scanned the tranny computer and got no codes BUT pids like coolant temp -40, prnd shows ???, tps 0, and rpm is wacky. RPM actually shows 1800 with engine off, volts varies from...
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Fixes & Summaries for GM
Fix/Summary Answers
1996 Buick Park Avenue 3.8L No Start, Misfire, MIL Lamp on VIN: 1G4CW52K1T
It's fixed! As it turned out I did something incredibly dumb! When I was diagnosing the misfire I swapped coil positions to see if the misfire followed the coil. It did not so I ordered a new module. Here is where my stupidity comes in, I FORGOT to return the... Trouble codes: P0303 (3 Misfie), P0300 (Multiple Misfire).
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1991 Cadillac DeVille 4.9L 1st gear VIN: 1G6CD5385M
i replaced soll as i was already in trans but the fix was fuse #5,shorted a/c clutch,unplugged a/c clutch replaced fuse and got ist gear back thanks to all cause you all hit right on.
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1994 Chevrolet Camaro 3.4L clutch VIN: 2G1FP22S4R
THATS TO ALL WHO REPLIED, GREG YOU ARE RIGHT CLUTCH WONT DISENGAGE. DAVID, DANIEL HIT IT ON THE HEAD, i NEEDED A LONGER PUSH ROD.. THERE IS A PROBLEM SOMEWHERE IN PEDAL TO FIREWALL. NO VISBLE DAMAGE, BUT CAR HAS BEEN PAINTED AND MOTOR HAS BEEN OUT BEFORE...
47
1997 Chevrolet Malibu 3.1L abs VIN: 1G1ND52M4V
thanks for the help everyone. I "borrowed" a new wheel hub from my parts supplier, plugged it in and grounded it to the car. Problem fixed. I installed it and drove it, all is well now. I guess the ecm saw something with the circuit through that sensor that it...
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1997 Chevrolet Blazer 4.3L abs VIN: 1GNDT13W8V
Well this baby is out the door. Found the front end had been wrecked. Found the ground 110 was slightly loose from body repair. It tested ok when checking it out at EBCM, but appearantly wiggled too much moving. Cleaned and re-secured all the grounds on the fr...
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1998 Chevrolet Cavalier LS 2.2L theft system VIN: 1G1JC5241W
many good replies several refering to bcm and the rest refering to grounds and power. This car does not have a bcm{info only} The problem truned out to be all ground which I litterly stumbled onto at the bottom of the lock cyl is a spring steel lug that has a...
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2001 Chevrolet Blazer Trailblazer 4.3L MIL Lamp on VIN: S122109015
thanks to everybody,replaced fan clutch that took care of codes and power light.sill would heat,replaced radiator and thermastat,now the customer is happy,thanks alot. Trouble codes: P1481, P1484.
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2002 Chevrolet Silverado 1500 5.3L MIL Lamp on VIN: 1GCEK14T52
Thanks for the replies. I replaced both sensors with OE sensors and replaced the sub harness. I did not want to originally put aftermarket sensors in but thats what the customer requested we do. I did clean the connectors and apply [...] to them but I se... Trouble codes: P0332 (Knock sensor 2 circuit).
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2007 Chevrolet Trailblazer LS 4.2L sir system VIN: 1GNDT13SO7
THANK YOU! MICHAEL AND ERIC YOU PUT ME BACK ON TRACK WITH THIS ONE I REPLACED THE CLOCK SPRING AND IT TOOK CARE OF THE OPEN LOOP CODES. HARD WON LESSON! I FEEL LIBERATED FOR THE WEEKEND. THANKS AGAIN FOR THE INPUT
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2007 GMC Sierra 1500 SLT 5.3L Poor Idle Quality VIN: 2GTEK13M17
Thanks for your replies - i did the relearn a few times , both in the bay and driving - did not help , still no full idle control - i was using a generic obdII scanner for this one - our software is only 2006 and older - ne reset idle command available - so se... Trouble codes: P0121.
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2002 Pontiac Grand Am GT 3.4L No Start VIN: 1G2NW52E02
Thanks for the help everyone. It did require use of a Tech 2 to get the airbag to communicate with the bcm, and to unlock the radio. Trouble codes: P1631 (incorrect password detected), B3128 (driver door unlock cntrl circuit is open/shorted to battery positive), B3133 (door unlock cntrl circuit is open/shorted to battery positive), B3138 (door lock cntrl circuit is shorted to battery positive), B1001 (airbag - option config error), U1000 (class II serial comm problem).
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