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Prev Professional Automotive Repair Technical Discussions for December 27, 2011
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Open Help Requests for GM
Help Request Answers
1999 Cadillac Seville SLS 4.6L complete cluster VIN: 1G6KS54Y3X
Thank you for your help in advance! This vehicle when started when watching the cluster will cause a full sweep of tach & speedometer, (normal) then message center will start to flash partial words of a message like : oor p : for "door open" is one example. ne...
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1994 Chevrolet K1500 5.7L Unknown VIN: 2GCEK19K9R
Thanks in advance for your expertise! This is my personal 1994 Chevy K1500. I have been chasing this driveline vibration for over 1 year now. Vibration can be felt in dashboard and steering wheel (like a gravel compactor-not a shimmy). I do not feel it in seat...
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2001 Chevrolet Silverado 2500 HD 8.1L Oil Pressure VIN: 1GCHK23G91
Thanks in advance for any help with this one. Customer requested new oil pump because of oil light coming on at idle when warm. After replacing with a high volumn pump, we were still getting low pressure at idle on dash guage. We removed oil switch and install...
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2002 Chevrolet Silverado 1500 4.8L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall
when started cold,coolant temp is showing 75 degrees Farenhieght. starts and surges briefly/once or twice then stabilizes.at 700 RPM if you shift into gear idle will drop and kill engine, If it does'nt then it will just surge a few times and die out. I had sca...
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2002 Chevrolet Impala 3.4L no start VIN: 2G1WF55E02
we checked the connections at sensor and at bcm c1 terminal b9 c1 term b12 and c2 a3 did drag test all tight.all look clean im thinking another sensor but my dealer says thay never had a bad one.poss bcm? really no good way to test this any farther that i now ...
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2002 Chevrolet Silverado 2500 HD 6.6L engine performa VIN: 1GCHK23102
Check engine light is on. Attempting to smog vehicle. Pulled code P0304-Cyl 4 misfir and code P0325 - Knock sensor circuit. Customer states codes in computer are from previous motor. Cannot clear codes. Used two different scan tools to attempt to clear codes. ...
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2006 Chevrolet Impala LT 3.5L theft system VIN: 2G1WT58K56
i replaced the theft deterent module for intermittent (unable to duplicate) starting problems (theft codes were stored in pcm). after replacing tdm and programming with the tech 2 it would not learn the keys. i tried programming several times (and have been s...
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2006 GMC Sierra 1500 SLT 6.0L MIL Lamp on VIN: 2GTEK13N36
Truck came in with intermittent no power. Found codes p2125 p1125. On data the app2 sensor signal drops out intermittently (voltage stays a .9 when app1 goes up), put the vantage pro on the app2 sensor signal and I got wave form like a crank sensor 15ms apart.... Trouble codes: P1125 (TP/APP sensor circuit), P2125 (APP sensor 2 circuit)
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2003 Pontiac Montana 3.4L performance issue VIN: 1GMDX13E33
stalls when warmed up usually starts right back up but will stall 4-7 in a mile.
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2005 Pontiac Vibe 1.8L Dash and firewall area VIN: 5Y2SL63845
This car has a distinctive buzzing noise at the firewall or dash area, loudest at 3000 rpm. Don't really feel any vibration in the car, but can feel some at the same frequency from the engine. The noise is only heard in the car. The motor mounts, cat and exhau...
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Fixes & Summaries for GM
Fix/Summary Answers
2003 Cadillac CTS 3.2L timing VIN: 1G6DM57N73
Thank you all who responded to this post. Number three camshaft was off by 180. the car runs great now.
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1997 Chevrolet K3500 6.5L No Start VIN: 1GBJK34F6V
I did finally receive a remnan injection pump from SS Diesel supply in New York ( Walt really knows his 6.5 diesels ) installed it and after a lengthy cranking time ( 30 secs at a time ) she lit right off. Setting the TDC offset was a bit tiresome ( very sens... Trouble codes: P0251 (inj pump A rotor / cam problem), P0370 (timing reference A high res problem), P0238 (boost sensor/ circuit open/ high).
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2004 Chevrolet Trailblazer LS 4.2L abs system and srs system VIN: 1GNDS13S34
THANKS FOR EVERYONES HELP, THE INSTRUMENT CLUSTER WAS THE CULPRIT! I WAS ABLE TO GO IN THROUGH THE TECH 2 AND LOOK AT THE LIGHTS IN THE IPC MODULE AND THEY ALL WERE OFF WHILE THE ABS AND AIRBAG LIGHTS WERE STILL ILLUMINATED. THEN WE ALSO NOTICED SOME LIGHTS WO...
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2005 Chevrolet Blazer 4.3L none VIN: 1GNCS18X65
I decided since the air bag sensing module wouldnt communicate with the scanner, thats where I should start. I found the module under the center console and when I saw the module I knew that was the problem. There was road salt and a ton of corrotion around mo... Trouble codes: U1016, U1041, P1626 (theft det. sig. not received in PCM), U1064 (loss comm. with BCM/DIM/SBM in PCM).
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1999 Oldsmobile Alero GLS 3.4L Stall, start &stall VIN: 1G3NF52E0X
Thanks to all, long story short found water leak from drivers side of windshield. Water was running down A-pillar and dripping into fuse box. Replaced severly corroded fuse box & all is well. We found this becuase we had 8 volts on our comm circuit.
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2000 Saturn SL2 1.9L Surge, Cuts out, Misfire, MIL Lamp on VIN: 1G8ZK5274Y
After about a week of racking my brain and exhausting my sources talked to my delco rep who was a tech at a saturn dealer for 15 years. He told me the only direction I can go in is a ground problem. Started removing grounds and cleaning them. Decided to remove... Trouble codes: P0130 (O2 sensor), P0300 (Misfire).
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