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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 21, 2013
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Open Help Requests for GM
Help Request Answers
2000 Cadillac Eldorado ETC 4.6L door ajar door locks VIN: 1G6ET1298Y
Hello fellow techs out there! Working on this Eldorado with a customer complaint, of door ajar message displaying on the dash while driving. Since it doesn't till you what door, used snap on solus ultra for diagnosis. Under body control module, inputs looked a...
1995 Chevrolet Corvette 5.7L Hesitation VIN: 1G1YY32P9S
This clean low mileage vette just falls on its face on accel, would not even back itself off the trailer when dropped off. Suspected restricted exhaust, removed LH oxygen sensor, no excessive back pressure (never above 1 psi), same results on RH bank. Removed ...
1996 Chevrolet S10 LS 4.3L No Start VIN: 1GCCS19W7T
Vehicle came to shop for poor performance & constant dtc code p300. It had original spider injection system. Update sefi unit ordered for it & installed. Now we have a no start condition & a p1351 code. there is no spark. but has good fuel pressure. code is cl... Trouble codes: P1351
2000 Chevrolet Malibu 3.1L Hesitation, Surge VIN: 1G1ND52J6Y
I picked this vehicle up for my wife. I was taking this car home and about 35 minutes of driving on the highway I lost power and engine died. Restarted after a few tries and continued to drive home. Pulled into the gas station and filled the tank, gas gauge we...
2001 Chevrolet Corvette 5.7L Instrument Cluster VIN: 1G1YY32G01
Alright corvette guys. This one is wearing me out. Came in with a no start complaint. Had a p1518 and a p1683. Problem was intermittent so i felt like it was an electrical issue (loose connecton, corrosion etc) checked grounds with no issue. Long story short: ...
2003 Chevrolet Suburban 2500 LT 6.0L No Start VIN: 3GNGK26U43
customer had this towed in for a no start, i got in it and it started right up. so i let it run outside for a while and it never quit. i then took it around the block and i was almost back to the shop when it started surging and quit at a stop sign. i cranked ... Trouble codes: B1440
2003 Chevrolet Silverado 2500 6.0L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1GCHK23U53
Vehicle came in for no power not running. Had code p0300 and p0101 for maf sensor. Checked signal was ok. Checked vacuum and had a plugged exhaust. Cut off the converters, and all were plugged (cut off all four) still would not run under load and at cruising v... Trouble codes: P0300 (Random multiple misfire)
2008 Chevrolet HHR LT Panel 2.2L MIL Lamp on VIN: 3GCDA05D38
This HHR will intermittently set TP codes listed, has been to several other shops, had throttle body replaced multiple times, customer and us are aware of TSB for wiring harness chafing or poor ECM terminal contact. Came to me with codes cleared, have road tes... Trouble codes: P2119 (TP closed performance), P2135 (TP sensor 1-2 correlation), P2176 (Minimum TPS not learned)
2009 Chevrolet Malibu LT 2.4L Unknown VIN: 1G1ZH57B89
We have a difficult one. this car makes a rattle(plastic on plastic) noise when braking. all brakes are good and the car stops good. it have electric p/s. you can hear the noise from the drivers seat and it sounds like its coming from underneath dash. we repla...
2013 Other GM 2500 hd crewcab 6.0L Lighting VIN: 1GC1KXCG4D
Ok, I just got a new truck,put lighted running boards on it.I am looking for the dome light feed from the BCM so i can trigger a ry-30 relay to power the lights when the door is open.anyone do this yet.mitchell shows a grey wire,it is not correct.the installer...
2001 Saturn SL1 1.9L MIL Lamp on VIN: 1G8ZH52831
This car came in with a P0410 secondary air injection system code. I checked the vehicle on a cold start to ensure that the air pump was commanded on at the proper time and temperature and the timing and temp checked out ok. The oxygen sensor didnt read lean l... Trouble codes: P0410

Fixes & Summaries for GM
Fix/Summary Answers
1997 Buick LeSabre Limited 3.8L battery VIN: 1G4HR52K4V
THANKS to everyone that offered help on this one! Special thanks to Mikol, and Jose. I started cutting wires and when i finally got to the tamper switch input wire, it went away. well down to .02 anyways, which with this battery is under spec for draw. wha...
2009 GMC Sierra 1500 SLE 5.3L Power door locks VIN: 2GTEK13339
I have yet to get the vehicle back into the shop, however I appreciate the valuable information I received on the replies. Now knowing the rear power door locks are not a BCM programmable option, I can create time for the tech to further investigate the schema...
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