TECHNICAL SERVICE BULLETIN

Reference Number(s): PI02003D, Date of Issue: March 2, 2015

AFFECTED MODEL(S):	2002-2015 Cadillac Escalade Models; 2000-2015 Chevrolet Avalanche, Suburban, Tahoe, GMC Yukon, Yukon XL, Yukon Denali, Yukon Denali XL; 2008-2012 Chevrolet Colorado, GMC Canyon; 2015 Chevrolet Colorado, GMC Canyon, 1999-2015 Chevrolet Silverado, GMC Sierra, Sierra Classic; 2003-2009 Hummer H2
SUPERCEDES:	This PI was superseded to update Models. Please discard PI02003C.

SERVICE INFORMATION

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

CONDITION/CONCERN

While performing a front end alignment it may be noticed that the upper control arm bracket alignment pin is missing. This pin serves as a pilot for the alignment cam when adjusting the front caster and camber.

RECOMMENDATION/INSTRUCTIONS

If the pin is missing, a 1/4 inch dowel rod or a punch can be utilized as a temporary alignment aid to properly center the cam to the bracket, while making adjustments and torqueing the control arm nuts

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Missing Alignment Dowel Pin (PI02003D)