Buy OEM 2003 GENERAL MOTORS Part # 22912208 (15125944, 15942236). Steering Knuckle. 2WD. 2WD, 1/2 TON. 4WD. 4WD, 1/2 TON. Avalanche, Escalade EXT; Left. Escalade ESV; Left. Silverado, Sierra Hybrid; Left

Knuckle - Steering.
A Knuckle used on a Steering axle that has no additional components attached.

Steering Knuckle

2WD. 2WD, 1/2 TON. 4WD. 4WD, 1/2 TON. Avalanche, Escalade EXT; Left. Escalade ESV; Left. Silverado, Sierra Hybrid; Left. Silverado, Sierra; Left. Tahoe, Yukon, Escalade; Left. Yukon XL, Suburban; Left.
Steering Knuckle - Repair or Replace
The steering knuckle in your 2003 may need to be replaced if it has become damaged or rusty, which will usually be determined during a related repair.