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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for November 24, 2018
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
2003 Chevrolet Suburban 1500 LS 5.3L Hesitation, Surge, Misfire VIN: 3GNFK16ZX3
GM Guys HELP!! I have this 2003 suburban in my shop that has a really bad shudder right around 55 mph that feels like a really bad misfire. pulled codes and found p0300. misfire history shows high misfires on 4 and 6. when problem occurs it does not log mi... Trouble codes: P0300
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Fixes & Summaries for GM
Fix/Summary Answers
2008 Chevrolet Uplander LS 3.9L MIL Lamp on VIN: 1GNDU23198
thank you all for the repies,this vehicle is not fixed yet,but I will update later if customer replaces the cat,as that is what the problem is. suggestions pretty much followed the GM SI checks for code P0420 before replacing the cat. no exhaust leaks. no ... Trouble codes: P0420.
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