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View Full Version : 02 Chevy Avalanche 5.3 (O2) Sensors



TheHydroman
07-19-2009, 12:44 AM
Has anyone tangled with quad o2 sensors on a 5.3 vortec?

Boltazar
09-19-2009, 05:07 PM
I know that 2 are heater wires and 2 are sensor wires