Silverado 3500 2WD V8-6.0L (2007)
26. Remove the HO2S (1-5) from the catalytic converter assembly. (1500 series shown, 2500/3500 series similar).
Installation Procedure
Important: A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite
tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the
compound applied to the threads. If the sensor is removed from as exhaust component and if for any reason the sensor is to be reinstalled, the
threads must have anti-seize compound applied before the reinstallation.
1. If replacing the catalytic converter assembly, perform the following steps, otherwise proceed to step 4.
2. If reinstalling the old sensors, coat the threads with anti-seize compound GM P/N 12377953, or equivalent.
Notice: Refer to Component Fastener Tightening Notice.
3. Install the HO2S (1-5) to the catalytic converter assembly. (1500 series shown, 2500/3500 series similar).
Notice: Refer to Fastener Notice.
