Yukon XL 2500 2WD V8-8.1L VIN G (2004)
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten the sensor to 20 N.m (15 lb ft).
2. Connect the knock sensor electrical connector (3).
3. Fill the cooling system/engine block. Refer to Draining and Filling Cooling System in Cooling System.
