ACDelco AFS138 Oxygen Sensor – 4-Wire, Direct Fit For Chevy GMC Trucks & SUVs

Check engine light on?

This ACDelco AFS138 oxygen sensor might be the fix.

It's a direct-fit O2 sensor for a ton of GM trucks and SUVs: Chevy Avalanche, Suburban, Tahoe, Silverado, GMC Sierra, Yukon, and Cadillac Escalade from the early 2000s.

It's a 4-wire sensor with an 18mm thread, female connector.

Replaces OE number 19178961.

Center placement.

ACDelco quality, with a 3-month warranty.

Clear that code and get your fuel trim back on track.