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Prev Professional Automotive Repair Technical Discussions for March 30, 2010
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Open Help Requests for GM
Help Request Answers
2001 Cadillac DeVille 4.6L Cruise VIN: 1G6KD54Y01
I was wondering if any one knows where I can get a replacement cruise ribbon/cable for a cruise module. This DeVille came in with inop. cruise and when we took the cable housing off of the module we found the yellow ribbon had broken/torn that attaches to the ...
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2001 Cadillac DeVille 4.6L ebcm VIN: 1G6KD54Y81
This vehicle came in with a c1242 pump circuit code, and a c1248 brake light activated code. Testing pointed to ebcm relay fault. I got a new bpmv and ebcm from the dealer and then reprogrammed the new ebcm using TIS and the tech 2. I used the calibration for ...
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1994 Chevrolet K3500 6.5L Hesitation, Stall, MIL Lamp on VIN: 1GBGK24F8R
vehicle originally came to us with an intermitant no start( cold extended crank) we found that when vehicle was allowed to sit for extended periods of time it would take a long time to start, then start and stall several times before it would actualy start and... Trouble codes: 88 (tdc relearn error)
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1994 Chevrolet C1500 4.3L engine tempature VIN: 2GCEC19Z2R
i have this 1994 chevrolet c1500 which has a remanned engine the problem is it won't maintain the coolant temp.it runs at a constant 180 in the shop and drops as driven to 150-160 degrees.has had 3 thermostats installed with new gaskets.also a oem from the che...
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1999 Chevrolet C1500 Suburban 5.7L Misfire VIN: 1GBEC16RXX
help Trouble codes: P0300 (Misfire)
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2002 Chevrolet Trailblazer LS 4.2L Transfer Case VIN: 1GNDT13S72
According to the customer, since this Trailblazer was new she has had it intermittently go into 4 wheel drive while driving down the road and the button in 2 wheel drive mode. She says that when it happens you can feel that the vehicle will somewhat slow down,...
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2002 Chevrolet Impala LS 3.8L gas gauge VIN: 2G1WH55K62
gas gauge is pegged at the full mark. pulled the tank and removed the sender, swept the float and on my snap on scanner the percent goes to o percent at the low end and to 107 percent at the high end. It does this with the original sender and with a delco repl... Trouble codes: P0463 (fuel level high)
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2002 Chevrolet Camaro Z28 5.7L instrument cluster VIN: 2G1FP22G92
Instrument cluster is erratic after driving vehicle for 20 or 30 minutes. Ran sweep test with Modus and everthing works correctly.
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1998 GMC Savana 3500 6.5L No Start, Poor Idle Quality, Surge, Cuts out, Misfire, Poor Fuel Economy VIN: 1GDHG31F6W
Helo fellow techs, not too much on diesels. Have this duramax that runs horrible. Sometimes won't start. Thinking maybe the injection pump; among other things, but main problem. Not real sure what to check. Just mainly looking for advice. Hopefully a common pr... Trouble codes: P0126, P0216, P0236, P0380, P1125, P1654
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2002 GMC Sierra 2500 HD 6.6L No Start VIN: 1GTHK29162
no start, replaced fuel pump, found filter housing sucking air and replaced w/ new filter. fuel pressure stays at 1290 t01400 psi. 9mpa. vehicle will start and run when using battery charger, and cranking speed is 180 190 rpm. performed flow test on fuel. vacu... Trouble codes: 1094 (not enough fuel pressure crank decel)
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2002 GMC Yukon Denali 6.0L steering box VIN: 1GKFK66U02
Hey guys, this denali came in with no power assist when turning to the right at idle. If engine is rpm is raised, problem goes away. Steering to the left has no problems. We talked to a tech at a dealer and he suggested the varible oriface be replaced. No diff...
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2002 Pontiac Grand Am GT 3.4L No Start VIN: 1G2NW52E02
Vehicle came in with intermittent no start condition. Found vehicle had security light flashing during no start. Descovered P1631, Incorrect password detected for Passlock system, codes B3128, B3133, and B3138, all related to door lock circuitry (vehicle has a... 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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2004 Pontiac Grand Prix GT1 3.8L evap & cat VIN: 2G2WP52244
Brothers of the hood: This pup runs fine except for an occasional start and stall issue. The real problom is that it will not clear EVAP and CAT rediness status. I took a gamble a week ago and installed a new computer and flashed it with the latest version, al...
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Fixes & Summaries for GM
Fix/Summary Answers
1990 Chevrolet K3500 Silverado 7.4L bubbling in recovery bottle VIN: 1GCGK34N0L
thank you to every one for your help, after reading all your posts i decided to check the cap for sealing tight because the water pump was only about 3 months old and tried to find more oe style radiator when i bought this one but was not able to find one even...
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1996 Chevrolet K3500 5.7L Stall, MIL Lamp on VIN: 1GCHK33R3T
Thanks to all that replied. Tim from Wisconsin had it right as did a few others. I replaced the VCM and all is well. All voltage readings are where they should be. This was an unusual repair for me. I have been repairing vehicles for over 40 years and very few... Trouble codes: P1122 (Throttle position sensor - low voltage).
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1997 Chevrolet Cavalier 2.2L timing cover?
Well I took it apart again this morning. Got out the digital calipers and found the new cam gear .005 thicker and .007 further offset! Of coarse no more parts in town so I took the old Cam sproket and istalled it with the new chain, crank gear, and tensioner a...
9
1999 Chevrolet C3500 6.5L tcc pwm circuit VIN: 1GBJC34F6X
see other post on 99 Chevrolet C3500, electrical, TCC PWM CIRCUIT and thank you for all your help thanks patrick
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1999 Chevrolet C3500 6.5L tcc pwm circuit VIN: 1GBJC34F6X
thanks to all that responed. found wire to term "E" from engine side of trans connector crushed between motor and trans mission. replaced wire from master brake cyclinder to trans connector and replaced trans connector. so far all is working fine. could not bl...
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1999 Chevrolet K1500 Suburban 5.7L MIL Lamp on VIN: 3GNFK16R4X
I had to replace the new fuel regulator with an aftermarket one. I had tried another new OEM but still had the same problem. I talked to a tech at the dealer and he said they changed the regulators to work with the new electronic injectors. I now have -2 LTFT ... Trouble codes: P0171 (Bank 1 Lean), P0174 (Bank 2 Lean).
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2000 Chevrolet Astro 4.3L MIL Lamp on VIN: 1GNDM19W1Y
Ok Guys got this bi--- done! Found circuit 439 pink wire at the black connector harness for vcm shorted to ground at the lower radiator support area. Pin # 18 pink wire at vcm shorted to ground about 12 inches from vcm to radiator support. Factory fault. Harne...
5
2002 Chevrolet Silverado 2500 HD LS 6.6L No Start VIN: 1GCHK23132
mornin gents,we spoke with our local dealer on this one.they,and at least one of you guys mentioned gm upping the fuel system warrantee on the duramax to 200kmi.our cust opted to give it a shot.we were thinking plugged injectors and the gm shop in ukiah,ca.wou...
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2003 Chevrolet Silverado 2500 HD LS 6.0L Hesitation, MIL Lamp on VIN: 1GCHK24U33
THE FELLOW THAT OWNS THIS TRUCK HAS NOT RETURNED WITH IT YET-HE IS BUSY AND TRUCK DOES NOT ACT UP VERY OFTEN-WHEN I GET IT BACK IN THE SHOP,I WILL LOOK AT THE THE THINGS THAT EVERYONE TOLD US ABOUT-WISH I COULD GIVE MORE INFORMATION THAN THAT-THANKS TO EVERYON... Trouble codes: P0120 (tps), P2135 (calibration).
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1996 GMC Jimmy 4.3L Misfire, MIL Lamp on VIN: 1GKCS13W6T
SORRY GUYS THE CUSTOMER HAS YET TO RETURN. HE LEFT DISGRUNTLED BECAUSE WE COULDNT FIGURE OUT THIS PROBLEM. WE ONLY HAD 4 HOURS WITH THIS VEHICLE SO IF HE RETURNS I WILL UPDATE MY DIAGNOSIS. Trouble codes: P0300.
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1996 GMC G3500 Vandura 5.7L Poor Idle Quality, Hesitation, Stall VIN: 1GDHG31K4T
Thank you all for your input. I know it was a little confusing being a 96 with TBI, but its a 1 ton cube van and I believe GM just dumped their old stuff into the heavier chassis. Anyways, the distributer shaft got replaced and that did bump my output of my pi...
22
2002 Oldsmobile Bravada 4.2L speedometer VIN: 1GHDT13S62
After checking everything again i was certain the pcm was the problem,What made me doubt myself was the customer said she had been driving the van without the speedo for a year using a garmin for mph.I coudnt see how trans shifted without vss still dont,we ...
4
1987 Pontiac Grand Am SE 2.5L Cuts out, Misfire VIN: 1G2NE14U8H
First of all thanks to all who replied to my request. We checked valve train and reference voltages, also grounds and wire harness for rubbing through, all to no avail. But what seems to have fixed it was OE wires. We installed new Delco wires and even took so...
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1994 Pontiac Grand Am SE 2.3L No Start VIN: 1G2NE5537R
This 2.3 is running again. I had responses ranging from a possible grounded injector, bad computer, bad icm or ign. security. I unplugged all the injectors and still did not have a ground signal so I ruled out bad injectors. Remember on this engine the injecto... Trouble codes: 19.
5
2005 Pontiac Grand Am SE 3.4L No Start VIN: 1G2NE52E85
well folks,the car has started 120 times since thursday of last week.various test drives,lunch runs etc. with no failure.the customer has decided to let the bank reposes the vehicle so i guess im done.thanks for the respnces to my request.most of you had good ... Trouble codes: U1000, U1088, B1327.
11
2002 Saturn Vue 3.0L bcm failure VIN: 5GZCZ63B72
The other shop finally brought vehicle back with a new BCM. We programmed it the same as last time, obviously now with the correct mileage of about 19,000. Worked fine, but it wasn't the exact mileage we punched in, was different by about 50 miles. Some myster...
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