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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for January 9, 2017
International Automotive Technicians' Network (iATN) - Members Only
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2002 Buick Century Custom 3.1L No Start VIN: 2G4WS52J92
This buick when started after being off at least 2 hours will fire up & run all day till you shut it off & say go in the store for a minute & come back out it will crank but won't start till it sets for an hour or so. When it is cranking not starting I spray c...
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2000 Chevrolet K3500 LS 7.4L Surge, Misfire, MIL Lamp on VIN: 1FTSM83F0A
This truck has a po300 code, while monitoring misfire counters it show a misfire only on (very) light acceleration. If I try to stop and power brake it lightly is also will not show a misfire. I unplugged the egr valve and the misfire seems to go away on light...
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2002 Chevrolet Avalanche 1500 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3GNEK13T12
customer complaint, randomly misses at idle (at a light/stop sign) after highway driving when ck light comes on p0300. It doesn't happen all the time. I drove it for forty miles nothing, drove it again happened after about 15 miles of highway, light came on fl... Trouble codes: P0171, P0134, P0300
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Fixes & Summaries for GM
Fix/Summary Answers
2007 Chevrolet Equinox LS 3.4L Heater VIN: 2CNDL13F17
This equinox is fixed. In the end it was a partially blocked heater core. Removed the core and cut it open to find it 3/4 blocked with dex-cool crud. What knocked me off track was the fact that flushing this core and watching the flow out it looked fine but i...
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2004 Pontiac Grand Prix GT1 3.8L No Start, Stall VIN: 2G2WP52264
I found that the balancer teeth not to be center. There is two alignment holes on and they weren't straight through just a 1/16 off maybe, but replaced balancer and all is running well. Weird how a hard part can cause an electrical problem. Will remember for t... Trouble codes: P1374 (Crankshaft Position CKP High to Low Resolution Frequency Correlation).
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2003 Saturn Vue 3.0L No Start VIN: 5GZCZ63B73
Replacing the bcm fixed the starting issue,always had bcm communication and all passlock data was correct,was unable to verify the circuit from bcm to pcm,should be class 2 serial data,could not find circuit in any schematics. Trouble codes: P1629 (Pass lock).
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