GMC Acadia, Canyon, Envoy, GMC Savana, Sierra, Yukon...
by shteff » Mon Oct 08, 2007 1:27 am
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shteff
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by JerryHu » Mon Oct 08, 2007 1:27 am
Do you want to say Oxygen Sensors that measure cat converter efficiency. Some cars have four but a single exhaust van I think two One sensor in or near the exhaust manifold and the other after the main cat converter. both screwed into the exhaust. Does it have a P0420 code?
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by JonnLee » Mon Oct 08, 2007 1:27 am
30 year auto tech
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by Mikey82 » Mon Oct 08, 2007 1:27 am
next to the muffler bearings
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