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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for September 5, 2011
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Open Help Requests for GM
Help Request Answers
1991 Chevrolet C1500 Silverado 5.7L Hesitation, Misfire VIN: 2GCEC19K1M
This is my own truck here. It will run fine in town, but as soon as you take it on the highway, it will buck or hesitate. The MIL will soon illuminate with a code 44. While monitoring data, I noticed the Block Learn at 170-172 and the Intigrator at 160. I don'... Trouble codes: 44 (Oxygen Sensor Reads Lean)
2004 GMC Savana 3500 6.0L pinging/detonation VIN: 1GTH35U641
I just replaced my neighbor/customer's engine with a GM crate 6.0l. I replaced every last part on it with all original dealer gaskets/seals/knock sensor harness, all pcv hoses and lines, etc. I did a real thorough job on it. Just after the engine replacement, ...

Fixes & Summaries for GM
Fix/Summary Answers
1999 Chevrolet Tracker 1.6L Poor Idle Quality, Stall, Misfire, MIL Lamp on, Runs Rough VIN: 2CNBJ186XX
Thank you members for taking the time to respond to my help request.I have no fix at this time.When the problem is found i will post it along with any helpful information.Thanks again for your time. Trouble codes: P0300 (Multiple Cylinder Missfire).
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