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Prev Professional Automotive Repair Technical Discussions for November 27, 2013
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2000 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD54YXY
My customer that is a large used car dealer bought this car at the auction. Very nice clean car. His complaint was the check engine light is on and the car shifts hard. We scanned the check engine light and found: P0101 Mass Air Flow Circuit Out of Range P03... Trouble codes: P0101 (Mass Air Flow Circuit Out of Range), P0335 (CKP Sensor A Circuit Problem), P0356 (CKP Sensor B Circuit Out Of Range), P0741 (TCC Performance or Stuck Off), P1599 (CC Power Management Mode or Engine Stall), P1621 (PCM EEPROM Memory Performance)
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2006 Cadillac XLR 4.6L MIL Lamp on VIN: 1G6YV36A76
Cadillac Guys PLEASE HELP!!! Vehicle came in for a check engine light. Found codes P1101, P0068, and P0101 in the computer. Checked for TSB and found one about reflasing ECM. Performed a reflash and codes still came back. Looked on identifix and saw issues wit... Trouble codes: P1101, P0068, P0101
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2007 Chevrolet Silverado 2500 HD LT 6.6L MIL Lamp on VIN: 1GCHK23617
Customer came into the shop about a year ago. Check engine light was on vehicle in limp mode with service DPF filter. (P2463 DPF soot accumulation) Performed service regeneration vehicle left. Since then the vehicle has come back a few times with the same prob... Trouble codes: P2463 (DPF soot accumulation), P244B, P244C
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2008 Chevrolet Silverado 1500 WT 5.3L MIL Lamp on VIN: 1GCEK19068
hi gm techs,pulling out my hair on this one.have p0449 code.tested system found ecm not switching solenoid with tech2.have a ground on the white wire at vent valve.bat volts on rd/wh wire.disconnect ecm and ground goes away.ohm all wiring no short to ground.th... Trouble codes: P0449 (EVAP vent sol. ckt.)
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2012 Chevrolet Silverado 2500 HD LT 6.6L smoke VIN: 1GC1KXC89C
Customers truck has white smoke coming from under the hood at least a couple times a week. He has had it to the dealer a couple times with no luck. The first time I looked at the truck I could not get it to do it, so I found some info on the internet about loo...
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1996 Geo Metro 1.0L Surge VIN: 2C1MR2266T
When warmed up this Metro develops an engine surge at idle. It can also be felt when driving at slow speeds. The vehicle runs normal until it gets warmed up and then like you flipped a switch it starts to surge. I took a snapshot of the data when it was acting...
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Fixes & Summaries for GM
Fix/Summary Answers
2006 Chevrolet HHR LT 2.2L Unknown VIN: 3GNDA23DX6
SORRY for the delay! Found while unplugging the BCM under console, which is essentially the power supply for all computers, and reconnecting it, problem is GONE and has stayed gone. "Microscopic corosion" on terminals possibly ?? terminals and connector loo...
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2006 Chevrolet Equinox LS 3.4L MIL Lamp on VIN: 2CNDL13F26
FIRST THINGS FIRST, I DONT ASK FOR HELP ALOT BUT WHEN I DO THE HELP I GET IS ALWAYS VERY HELP FULL. FIRST I CHECKED THE WIRING FROM THE PCM TO O2 SENSOR, NO PROBLEMS. THEN WE SEARCH AGAIN FOR VACUM LEAKS COULD NOT FIND ANY WITH BRAKE CLEAN BUT I DIDN'T SPRAY T... Trouble codes: P0171 (Lean).
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2005 Pontiac Grand Prix GT 3.8L turn signals rear VIN: 2G2WS52255
Sent car to the dealer.They said car had wrong bulbs and a bad wire some were.I checked and changed all bulbs with no change.Sounds a little fishy.
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