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Prev Professional Automotive Repair Technical Discussions for September 18, 2009
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1999 Buick LeSabre Limited 3.8L passenger side air mix actuator VIN: 1G4HR52KXX
i have tested everything on the car. it all points to the right air mix acuator. i have replaced it twice and no difference. am i missing something. there were no codes in the bcm. please help
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2003 Cadillac CTS 3.2L Poor Idle Quality, Misfire VIN: 1G6DM57N13
vehicle came in with check engine light flashing and codes po300, po301, po303 and po305 all on the right bank. vehicle only misses at an idle. bring idle up to 1200 rpm, misfires stop. while at an idle, engine runs rough but not like all 3 cylinders are dead.... Trouble codes: P0300 (random misfire), P0301 (cyl 1 misfire), P0303 (cyl 3 misfire), P0305 (cly 5 misfire)
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1987 Chevrolet Corvette 5.7L caliper VIN: 1G1YY3180H
thanks for any help in advance, this car upon initial light braking first pulls right, then straightens out & brakes evenly. however when on lift l/f caliper seems to "drag" and r/f is free and r/f wheel will spin freely. pressure on l/f seems less than r/f wh...
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2003 Chevrolet Silverado 1500 4.8L Surge, Misfire VIN: 2GCEC19V83
hi everyone, this truck came in complaining of a misfire. no misfire code present at first. codes p0172, p0175 rich b1, b2. a surging idle that gets worse as it warms up. also surges on acceleration up to about 2000 rpm, then is only felt occasionally at highe... Trouble codes: P0172, P0175, P0300
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2004 Chevrolet Trailblazer LS 4.2L MIL Lamp on VIN: IGNDS13S34
HI Y'ALL!! This Chevy trailblazer is diving Miss Daisy to use cuss words I never even heard before!!! The fuel pressure is steady 57 @ idle, and 50@ cruise!!! The fuel trim goes very hi on cruise (20 st and 27 lt), and sets codes for rich and lean system. Also... Trouble codes: P0131 (B1 oxy sensor signal low been replaced), P0171, P0172, P1133
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1998 Oldsmobile Aurora 4.0L No Start VIN: 1G3GR62C4W
aurora has intermittent no start condition-this happens rarely after hot soak.It spins freely but will not start.Has good fuel pressure when this happens,but I'm not sure about ignition system.Has anyone run into this with this car-with this 4.0l engine. Trouble codes: P1599
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2009 Pontiac G6 2.4L compressor VIN: 1G2ZG57B39
Pontiac team members, this is a friends vehicle that's getting no satisfaction at dealer. Starting,after a hot soak of a few hours a rattle/buzzing noise occurs for only a couple of minutes. A/C must be on & car is in gear. Seems to happen more often in revers...
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2002 Saturn L300 3.0L No Start VIN: 1G8JW54R02
Hello, Techs I have this Saturn that came into the shop yesterday for a no start. The first thing i did was checked for codes with my scan tool found U2105 for a communication error with the PCM. I then tried to communicate with the PCM and could not, However ... Trouble codes: U2105
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Fixes & Summaries for GM
Fix/Summary Answers
1997 Cadillac DeVille d'Elegance 4.6L front lower control arm bushings(front position) VIN: 1G6KE54Y3V
Well first of all thank you to all who replied.I did a search on all websites offered up by you guys,but unfortunately they did not make the bushing that I required.They did have bushings for the car but not the right ones(front position,lower control arm bush...
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2000 Cadillac DeVille 4.6L Poor Idle Quality VIN: 1G6KD54YOY
Hi Everyone And Thanks! My technician was dead on. We replaced the computer, had the CKP relearn done at dealer, and the vehicle runs great. Trouble codes: P0108, P0203, P0480, P0748, P1106, P1571.
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1953 Chevrolet Truck 3.9L generator VIN: 131RRK6222
First of all thanks for the many helpfull replies and even a phone call. I was on vacation for a week and this delayed my response. After checking and double checking the wires I found nothing wrong so the Generator was sent out again,this time the armature wa...
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1993 Chevrolet C2500 Cheyenne 5.7L Hesitation, Surge, Cuts out, Stall VIN: 1GCFK24Z2P
Thanks for all the info guys following the low fuel psi I removed the pump assy an found the rubber hose connection between the pump an the transfer tube to have a slit in the hose an leaking psi also found a dirty grd at the intake repaired all and test drove... Trouble codes: 55 (testing and results).
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1993 Chevrolet K3500 Silverado 6.5L Harsh Upshift ( DTC 22) VIN: 1GCHK34F2P
Well guys I replaced the Transmission Temperature Sensor & Internal Harness. Transmission seemed to shift a little better but still had DTC 22. Customer has decided he does not want to spend anymore time or money on this vehicle at this time. I suppose we can ...
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2000 GMC C-Series Topkick C6H042 7.4L Poor Idle Quality, Surge, vibration VIN: 1GDE6H1B5Y
THANKS TO ALL WHO REPLIED, AFTER I REMOVED THE BELTS AND DISCONNECTED THE FLYWHEEL STILL HAD VIBRATION, USED A BORESCOPE AND LOOKED AT PISTON ON THE CYLINDER THAT DROPPED THE VALVE AND FOUND THAT WHEN THE VALVE SPRING BROKE AND DROPPED THE VALVE THE VALVE SMA...
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2004 GMC Sierra 1500 4.8L No Start VIN: 1GTEK14V74
Fix for this one was to remove the power relay and switch it with the headlight relay. The truck then started right up. I ordered a new relay and all is well. Thanks for the help.
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2002 Oldsmobile Bravada 4.2L No Start VIN: 1GHDT13S22
Thank you all very much. It is a lot of help just knowing that there is help out there. I fixed the veichle with a new cam sensor. The signal was just dropping out. Thank you again.
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1999 Pontiac Grand Am SE 3.4L Temp guage VIN: 1G2NE12E7X
Fixed this one found wire for temp sensor broke in connector on right side of engine bay thanks for the suggestions
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2002 Pontiac Bonneville SLE 3.8L Stall VIN: 1G2HY54K22
AFTER POSTING REQUEST I WAS DENIED TO CONTINUE TO SEARCH FOR THE PROBLEM. MANY GOOD IDEAS TO LOOK FOR BUT HAVE ALREADY LOOKED IN AREAS . INJECTORS WERE GOOD AS WELL AS IGN MODULE . CAM AND CRANK SENSORS SCOPE GOOD AS WELL. ONE SAID THERE WAS A NEW TPS THAT WO...
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