Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1280 (FRONT SUSPENSION SYSTEM)REPAIR INSTRUCTIONSLOWER CONTROL ARM REPLACEMENTINSTALLATION PROCEDURE

2003 Chevrolet TrailBlazer 4.2 S, 4WD

Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation Procedure

WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

Important: DO NOT tighten the nut and bolts completely. The weight of the vehicle must be on the tire and wheel assemblies before tightening the nut and the bolts.

Install the following components to the crossmember:
- The lower control arm (2)
- The 2 bolts (1,4)
- The nut (3)
Fig 1: Installing Lower Control Arm
Courtesy of GENERAL MOTORS CORP.
Install the lower control arms and the crossmember to the vehicle. Refer to FRONT SUSPENSION CROSSMEMBER REPLACEMENT (FWD) or FRONT SUSPENSION CROSSMEMBER REPLACEMENT (AWD) .
With the weight of the vehicle on the tire and wheel assemblies, push down on the front bumper 3 times in order to bounce the vehicle and stabilize the suspension.
NOTE: Refer to FASTENER NOTICE .
Tighten the nut and the 2 bolts.
Tighten

Tighten the nut and the 2 bolts to 137 N.m (101.0 lb ft).
Measure the wheel alignment. Adjust if necessary. Refer to MEASURING WHEEL ALIGNMENT in Wheel Alignment.

RENDER: 1.0x

NO RELATED

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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.