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Prev Professional Automotive Repair Technical Discussions for July 19, 2007
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Open Help Requests for GM
Help Request Answers
1992 Buick Roadmaster 5.7L Unknown VIN: 1G4BN5374N
Help Buick/ G.M. Techs! We have this vehicle in for an oil pan, have not done one before and are using alldata info. we cannot clear oil pan from flex plate when attempting to remove. We are following the procedure by the book and are not skipping any steps. A...
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1997 Buick Park Avenue 3.8L anti theft VIN: 1G4CW52K5V
The customer originally had this car in for the air bag light being on, that turned out to be the BCM, which was completely dead, no functions, no communication. Replaced the BCM and programmed, everything works good. Now the car intermittently has a no crank ...
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1995 Cadillac Seville SLS 4.6L compressor VIN: 1G6KS52Y7S
Customer states: 'A/C pressure low' displayed on dash, proceeded to have pressures checked all OK. Sent to me to check electrical. This is the first Cadillac to enter my shop, If I supply compressor direct with current it functions and cools. I have no technic...
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1998 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD54Y4W
Evening gentlemen and ladies. I have an 1998 cadillac deville that keeps throwing a Maf sensor code (P0101). The problem is how inconsistant the problem occurs, approximitly once in fifty miles. I have looked at freeze frame and tried to duplicate the problem,... Trouble codes: P0101 (maf out of range)
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1991 Chevrolet Corvette 5.7L Hood
I am not sure if this has a cable directly to the release or if there is a lever. I am on the island of Antigua in the caribbean without any type of reference manuals. I do not in any way want to cause any damage to the vehicle in try to open this top. if some...
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1997 Chevrolet C1500 5.7L Cuts out VIN: 1GBEK19R8V
ive been messing with this truck for two days off and on-when you gradually give it gas under load or in nuetral it will rev up fine-when you take off from a stop or rev it up fast it labors to rev up and has no power whatsoever-you imediatly think it has a pl...
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1998 Chevrolet K2500 Cheyenne 5.7L no power VIN: 1GCGK29RXW
ease into throutle vehicle ok step on throutle no power won't go over 10 mph fuel pressure 60 psi acts like pluged converter pressure guage before converter 1.5-2.0 at 2500 rpm changed coil,control modual,cam sensos, no misses no codes still on power
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1999 Chevrolet K2500 Suburban 5.7L Mechanical VIN: 1GNGK26J3X
Thanks in advance. This truck came in with a wicked pedal pulsation. did front brakes and had rotors turned on car. this got rid of the steering wheel shimmy . looked at rear brakes and linings were cracked and drums purple. replaced shoes drums and test drove...
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2000 Chevrolet Suburban 2500 6.0L compressor VIN: 3GNGK26UOI
The A/C compressor will not come on after the vehicle has run, been shut off, [say like you go into the store for 5 minutes] and then you start the vehicle up. No A/C. The compressor is not coming on and the A/C light on the dash is blinking when you push it t...
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2000 Chevrolet Astro 4.3L speedo odometer VIN: 1GCDM19W5Y
here is what i got... the speedo doesn't work (stays at 0) & the odometer and the prndl do not light up. on my red brick, i can see vehicle speed and the gear position and both read properly. on the plug that connects to the speedo, all power and grounds seem ...
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2003 Chevrolet Impala 3.4L blower motor VIN: 2G1WF52E93
Customer had blower motor and resistor replaced, but blower motor still works intermittently. Any ideas anyone Thanks for your help Jaime
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1996 GMC Savana 3500 5.7L Stall VIN: 1GDJG31RXT
This box truck came in as a no start about a week ago. It has over 238k miles on it. Hooked up scanner and had no communication with ecm. Checked the dlc and had a signal and ground there so I ordered a new ecm. Had it flashed and installed it. The truck start...
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2003 GMC Yukon Denali XL 6.0L computer, VIN: 1GKFK66UX3
replaced fuse blew imidiatly. any help woul be great, thanks in advance, -mike
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1995 Oldsmobile Aurora 4.0L Surge, Stall VIN: 1G3GR62CO5
Hey all! Car came in for stalling. Plugs/wires were bad - replaced. Car will stall if I take my foot off the gas pedal too fast, and will also stall at idle (in drive - after a couple of minutes in the same spot) 50% of the time. All codes listed here were in ... Trouble codes: 22 (TPS Circuit Open), 30 (Idle Speed Control Actuator Slow or Inop), 56 (Turbine Shaft Speed Sensor Circuit), 70 (Intermittent TPS Signal), 73 (Intermittent Engine Coolant Temp Sensor), 95 (Engine Stall Detected)
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1998 Oldsmobile Cutlass GLS 3.1L MIL Lamp on VIN: 1G3NG52M2W
Have vehicle with code 1641 and have no info on code, vehicle runs good only complaint is mil on and poor fuel milage. As I have no info on code(searched archives) I dont know where to go from here. Could the new ignition switch have set this, I did have to pr... Trouble codes: 1641 (no def found)
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1999 Oldsmobile Intrigue GL 3.5L Cuts out, Stall VIN: 1G3WHS2H52
orignally car came in with code 336 so the tech replaced crank sensor and ran pin out test as per alldata, checked serial data on scan tool and found crank sensor still on time b.did crankshaft relearn, and cancelled the ck/eng light,but still on time b ordere...
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1999 Oldsmobile Intrigue GLS 3.5L MIL Lamp on VIN: 1G3WX52H3X
This car is from a dealer so I dont know much.. I have used [...] brand scanners. I have a check engine lite all the time and there are no codes in the engine or transmission computer. live data shows the computer recognises the lite as on but no codes an...
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2001 Oldsmobile Aurora 3.5L compressor VIN: 1G3GR64H81
Car came in not cooling well, we low side 60 high 200 and the low side would start comming up with rpm's. High side did not do much. Installed a new (GM) compressor flushed the system new accumulator and orfice device (2 stage electronic) and still have basica...
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1994 Pontiac Bonneville SE 3.8L Tcc,overdrive VIN: 1G2HX52L4R
Original complaint was intermittent loss of tcc lock up and fourth gear.Flushed transmission fluid was dirty Still problem pursists 2 out of 10 test drives will lose fourth and tcc lock up? I've checked power to the solenoids when problem happens ok I've also ...
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1999 Pontiac Sunfire SE 2.2L Compressor VIN: 1G2JB1247X
Hello all. I have a condition that doesn't seem to make too much sense, atleast to me. It was a bad compressor before, high side and low side same pressure. Evacuated system, Flushed system. New orifice tube, Vacuumed for 30 minutes. No new accumulator though....
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Fixes & Summaries for GM
Fix/Summary Answers
1998 Buick Park Avenue 3.8L air flow direction VIN: 1G4CW52K3W
Gentlemen, As usuall, you guys have overwhelmed me with replies. Kudos to all. Unfortunately, the customer has not approved the repair for fear of what the costs could be. The vast majority of responses were that this was vacuum related. I can say with confid...
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1997 Cadillac DeVille 4.6L compressor VIN: 1G6KD52Y9V
Car is fixed!!! Yeah!!! Thanks to Robert from Colorado, you nailed it on the head. Temp sensor readings on the scan tool showed 9 degrees on the evap inlet temp, was too cold, compressor shut down to protect the evap from freezing. I feel really stupid in not ...
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1991 Chevrolet Lumina Euro 3.1L Injectors VIN: 2G1WN14T6M
Most common reply to the post was the fix. Fuel injectors' resistance dropped (shorted) when vehicle got warm, and shut down the driver curcuit in the PCM , causing the vehicle to have spark, but no injector pulse when it died. A new set of injectors (was hig...
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1996 Chevrolet Corsica 2.2L Stall VIN: 1G16D5542T
It appears that the fix was the crank sensor. Resisatance was out of spec by about 400 ohms. We replaced it and the customer has not returned. Thanks to all that replied.
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2002 Chevrolet Tracker ZR2 2.5L a/c electrical system, VIN: 2CNBJ73462
THANKS TO MICHEL FROM TEXAS AND THE OTHERS THAT HAVE RESPONDED. IT HAS LEFT THE BUILDING AFTER READING THE POSTS AND RECHECKING THE GROUNDS WE HAD ORIGINALLY CHECKED. ON RIGHT HAND SIDE OF RADIATOR SUPPORT WE FOUND THE TWO GROUND WIRES AND RECHECKED, THE ONE C...
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2004 Chevrolet Cavalier 2.2L engine VIN: 1G1JC52F14
did wet compression test all cyl good, redid fuel pressure test, koeo 58lbs, did fuel sample 85 percent water, disabled fuel system--- ran on brake clean... pulled tank cleaned, replaced fuel filter, fuel pump, flushed fuel lines--- cleared codes --- car runs ...
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2004 Chevrolet Silverado 2500 HD 6.6L sulfur odor from exh VIN: 1GCHK23104
Thanks for all the input- we are going to test the charging system 1st and then if all ok have customer switch to good fuel. Greg and crew.
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2004 Chevrolet Express 3500 6.0L Misfire, MIL Lamp on VIN: 1GBHG31U44
hey guys!! well i guess i got caught up with that compression test, running comp. 0. well it had nothing to do with that, lol. it turned out to be the injector! it was faking me out cause i had pulse, i had operation,ie click click. i had flow, pressure drop o... Trouble codes: P0307, P0300.
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2002 GMC Sierra 2500 HD 8.1L Hesitation, Poor Fuel Economy, MIL Lamp on, loss of power VIN: 1GTHK29682
Thanks for all the help guys.I replaced the fuel filter and reprogramed for new update.Vehicle runs good with no CEL. Trouble codes: P0101.
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1989 Oldsmobile Cutlass Supreme SL 3.1L Surge, Cuts out, Stall VIN: 1G3WS14T1K
thanks for all the replies to this message .i checked the resistance on the injectors when hot and 2 of the 6 had a resistance of 2 ohms.replaced all injectors with known good and ohm checked injectors from a used motor out back . thanks again
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1997 Pontiac Grand Am GT 2.4L theft VIN: 1G2NW12T2V
THANKS AGAIN FOR ALL THE REPLIES. CHRIS FORM MISSOURI, I DID TRY THE RESISTOR AND DID GET THE 4 VOLTS BUT STILL WOULD NOT RELEARN PASSLOCK. HAROLD FROM MICH HAD ME DOUBLE CHECK 12V TO WHITE WIRE , WHEN HOOKED UP I ONLY HAD 7.7V. I DOUBLE CHECKED VOLTAGE AT YEL...
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2000 Pontiac Bonneville SE 3.8L Cuts out VIN: 1G2HX54K4Y
Ignition switch fixed it. The switch came out easily and I was going to check the voltage coming out of it, but at that point it was easier to plug a new one in. Not my preferred diagnostic method, but after 4hrs of head scratchin, done. I want to thank ever...
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2001 Pontiac Aztek 3.4L bcm VIN: 3G7DA03E91
Most responses said the BCM is a common failure on this car. Called dealer and they said BCM would need programmed after installation, so sent customer to dealer to get it all done at the same time. Thanks
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