zieglerj-pdm-specialist
Full Access Member
How many Oxygen sensors are on the 2004 Yukon XL Denali and is one before and then after the mufflers. Or is there any after the catalytic Convertor?
Oxygen sensors
- Thread starter zieglerj-pdm-specialist
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2 before the cat, and 1 after the cat I think. None after the mufflers
