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Prev Professional Automotive Repair Technical Discussions for July 22, 2010
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Open Help Requests for GM
Help Request Answers
2000 Buick LeSabre Custom 3.8L front power windows VIN: 1G4HP54K5Y
hey guys needing some expert help again lol. got this lesabre custom with both front power windows inop. switches are functioning and can see switch inputs on tech ii. unplugged connector at window motors and found twelve volts in both directions. unknown whet...
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1982 Chevrolet G20 Sportvan 5.7L Excessive Emissions, Hesitation VIN: 1GCEG25H5C
i have not seen a carburated vehicle in years and i grew up in the trade in an age of fuel injection. this pig looks like some hack put a motor in it there are vac lines strewn everywhere but are all connected. carb looks new and so does secondary choke pull o...
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1987 Chevrolet Monte Carlo SS 5.0L No Power VIN: 1G1GZ11G5H
customer like to change for 200 to 700 with lock up and performance install 700 with shift kit,corvette servo and 2400 torque converter it got all the gears under power perfect cruising up shift good down shift hard pleas let me know what you think
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1998 Chevrolet C1500 Suburban 5.7L Cuts out, Misfire VIN: 3GNFK16R3W
Thanks for reading, I am working on this Suburban for a local transmission shop. Symptom is a "buck" at cruise speed. It only seems to happen when you have reached your desired speed, say 60 mph, and are tipping OUT of the throttle. One big "buck". Apparently...
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2004 Chevrolet Malibu Maxx LS 3.5L Headlamps VIN: 1G1ZT64844
Customer dropped car off over weekend. Complaint - could not shut headlamps off-drained battery dead. Car also would continue running w/key out of the ignition for approx. 30 seconds after turning off. Charged up battery, can not produce problem. No codes ,bat...
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2005 Chevrolet Colorado Sport LS 3.5L Blower Motor VIN: 1GCDS13695
Good day to all and i greatly appreciate any and all help on this matter. First of all i have not spent alot of time on this vehicle. It is a used vehicel on a dealership lot and it is 'about to go to wholesale'. Didnt spend alot of time on vehicle, mainly saf...
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2005 Chevrolet Silverado 1500 5.3L Blower Motor VIN: 2GCEC19T85
intermittent hi blow, or no blow. Will work one day and not the next. a/c temp is normal(very cold). ALSO, I noticed twice when key was removed, fan was still on for several seconds.
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1996 GMC K2500 Sierra SL 6.5L hvac VIN: 1GKGK26F7T
Vehicle returned with poor cooling complaint. Found dye leaking from compressor. System was only down .5 lbs. so I recharged and tested before replacing compressor and found high system pressures. Replaced compressor, accumulator, orifice tube and flushed syst...
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2002 GMC Sierra 3500 SLT 6.6L valve cover VIN: 1GTJK331X2
Since i have replaced fuel injectors i have had oil seaping from lower valve covers. mostly on the lower sides. New gaskets and grommets twice. still leaks. Dont see it on the ground but uses about one quart a week.
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2005 GMC Sierra 2500 HD SLE 6.0L MIL Lamp on, rEDUCED pOWER VIN: 1GTHK24U05
Truck can to the shop under reduced power, With codes P1125 and P2120. After testing circuits, replaced throttle body and accelerator pedal with factory parts. Truck ran fine for two weeks. Now truck has come back with reduced power again showing the same code... Trouble codes: P1125 (Manufactures Control Fuel Air Metering), P2120 (TPS / Pedal Position Sensor / Switch D Circuit)
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1996 Oldsmobile Achieva SL 3.1L Starting VIN: 1G3NL52M7T
this car as no communication betwen the ignition switch and the cluster.when we put the ignition switch on we ear the fuel pump but we dont see any light in the cluster i have 3 codes p1573 p 1629 p1641 i have checked the ignition switch ,the tan wire from the...
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1992 Pontiac Grand Am SE 2.3L No Start VIN: 1G2NE1432N
This car has been here a few times now. We tested the spark control module, it passed so we replaced a coil and it ran fine. Customer gets it home and it backfires out the exhaust and won't start. We towed it back and found the fuel pressure regulator was leak...
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2000 Pontiac Sunfire SE 2.2L compressor VIN: 1G2JB1240Y
having a compressor failure issue with this car. replace original comp. with reman unit because the clutch came apart on original. car comes back two weeks later, compressor knocking internally (loud) figured faulty reman compressor, replaced again with delphi...
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2000 Pontiac Sunfire SE 2.2L tcc VIN: 1G2JB1242Y
We replaced the harness in this car ,the only difference is we have a 3 speed trans which has a 4 pin 2 wire connector for TCC . The ( used ) harness has a 20 pin connector for a 4 speed We used alldata wiring diagram hoping we could make this harness work.Dis...
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2005 Pontiac Vibe 1.8L MIL Lamp on VIN: 5Y2SL63875
This vehicle will toss a p2118 code very intermittantly, (once every 2 days or so) and the throttle goes into limp-in mode. shut the car off, restart, and it runs fine. It only happens upon decel, as soon as you let off the gas. Replaced throttle (TAC)assembly... Trouble codes: P2118 (Throttle actuator control motor performance)
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2005 Pontiac Grand Prix 3.8L Rear Main Seal VIN: 2G2WP52245
On a previous repair we had this vehicle and it had a rear main oi leak with a noise, found flexplate damaged, and rear main seal housing damaged along with seal.Flex plate seemed to rub into housing. Now almost 4000 miles later the vehicle is back with the sa...
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2006 Pontiac G6 3.5L Air Conditioner VIN: 1G2ZG55896
Vehicle came in for ac not cooling. Pressures were almost the same with compressor running. Replaced compressor and pressures went to 30 on low side and 150 on high side. Air temp not very cool. Driver side even warmer by about 10 degrees.replace expansion val...
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Fixes & Summaries for GM
Fix/Summary Answers
1995 Cadillac Eldorado 4.6L power steering VIN: 1G6EL12Y8S
Of course most of you were right, blockage. the power steering filter was the culprit. The tech working on this vehicle blew air thru everything, said all was clear. As we all know, never ASSUME! Why he did not check the filter or just replace it I can't tell...
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1996 Chevrolet C1500 Suburban 5.7L MIL Lamp on VIN: 1GNFK16R0T
well sorry for taking to long to post fix but my computer was out getting tune up lol. well its fix it was the fuel pressure regulator once it got got it droped th efuel fressure and the lean condition will apear.. you guys r great tnx. Trouble codes: P0171 (Fuel sys too lean b1), P0174 (Fuel sys too lean b2).
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1996 Chevrolet C3500 Silverado 6.5L Starting VIN: 1GBKC34F7T
wow alot of you went right for the pump or the driver module, however joseph from ontario sent me in the right direction by checking fo crank signal, i check for it all the time on gas jobs just had a brain fart i guess, anyways it turned out to be the crank s...
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2000 Chevrolet Blazer LS 4.3L Misfire VIN: 1GNCS13WOY
First thanks too all who took the time to reply. Chased the problem down to the CSFI unit. Number 4 plug was fuel soaked after the low RPM and number one plug threads fuel soaked after high RPM. Recommended the injector upgrade to the customer, but as of this ... Trouble codes: P0300 (Engine Misfire Detected).
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2002 Chevrolet Malibu 3.1L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1G1ND52J52
Next time, I'm double-checking all the fuses. It turns out that the A/C clutch has started to fail, and blew the ERLS fuse, which in turn cut off power from all of the circuits that were throwing codes... and causing the engine malfunction. Thanks for all o...
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2003 Chevrolet Express 3500 6.0L No Start, Stall VIN: 1GTHG35U43
This one made me work. It was a bad ing power wire red/wht. From the fuse box to the pcm. cut the wire at both end and replaced. Thanks for all the help.
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2003 Chevrolet Venture LS 3.4L Hesitation, MIL Lamp on VIN: 1GNDX03E03
THE FIX WAS A USED PCM THE CARDONE REMAN DID NOT TURN THE FRONT OXYGEN SENSOR HEATER ON AT ALL THAT ALLSO GAVE ME THAT HUGE STUMBLE.ALSO I TRIED 4 REMAN UNITS!!! Trouble codes: P0135.
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2007 Chevrolet Colorado LS 3.7L MIL Lamp on VIN: 1GCCS14917
We took the truck to GM for what I thought would be a reprogram or new ECM. The tech at the dealership told me that the P0171 was real and as soon as he entered the VIN and the code into his computer system he found a "bulletin" about aftermarket air filter el... Trouble codes: P0326 (Knock sensor performance), P0171 (Lean o2 sensor bank 1).
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1993 Pontiac Grand Am SE 3.3L No Start VIN: 1G2NE51N4P
i apreciate all of you to help me with this car not star,problem was pcm,i change and car star.thanks very much.
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2004 Pontiac Grand Am SE 2.2L Poor Idle Quality, Surge, MIL Lamp on VIN: 1G2NE52F24
THANK YOU EVERYONE FOR YOUR HELP! THIS ONE IS FIXED, THE PROBLEM WAS THE THROTTLE PLATE SET SCREW. SOMEONE WAS IN HERE BEFORE AND HAD TAMPERED WITH IT. THEY HAD IT SCREWED OUT JUST ENOUGH TO RAISE THE IDLE A LITTLE BIT. MAYBE THE ORIGINAL PROBLEM WAS A STICKY ... Trouble codes: P0171, P0507.
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2002 Saturn L300 3.0L gear selection VIN: 1G8JW54R22
Thanks for all your help and suggestions, the vehicle has been fixed two items were causing the issue. 1st item was a bad brake switch (keep in mind this started acting up after the main problem started, not the main fix) 2nd item found (main issue) was the EC...
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2004 Saturn Ion Red Line 2.0L intercooler VIN: 1G8AY12P94
Replaced intercooler system pressure cap, released vehicle to customer to drive several days, when returned coolant was once again low, no visible leaks sited, positive there is no air in system. Only possible conclusion, as stated by one reply I received is t...
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