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Prev Professional Automotive Repair Technical Discussions for May 7, 2021
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2012 Chevrolet Silverado 2500 HD LT 6.0L Excessive Emissions, MIL Lamp on VIN: 1GC1KXCGXC
Have this fine used truck from used car lot here.Have rich bank 1 and 2 codes,we replaced maf due to reading out of range test drove and it passed the rich running tests in mode 6 data, Customer returned with cel on again with same codes. Here are my readi... Trouble codes: P0172, P0175

Fixes & Summaries for GM
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2011 Buick Enclave CXL 3.6L Misfire, MIL Lamp on VIN: 5GAKVBED9B
Guys / Gals I appreciate the advise. What I found was the cylinder 6 exhaust valve rocker fell off due to broken valve spring. Trouble codes: P0306, P0300.
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