Hi Chevy-k1500
Start the engine and look for the catalytic converter underneath your truck. If its blocked it will begin to turn red hot. If its partially blocked you will need to hook up a exhaust gage before the catalytic and test the back pressure. An overheating cat will ruin the O2 sensor triggering a computer code.
Start the engine and look for the catalytic converter underneath your truck. If its blocked it will begin to turn red hot. If its partially blocked you will need to hook up a exhaust gage before the catalytic and test the back pressure. An overheating cat will ruin the O2 sensor triggering a computer code.
