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 DIAGNOSIS (SINGLE PAGE)DRIVELINES & AXLESDIFFERENTIALS & DRIVE AXLESFRONT DRIVE AXLE - 4WDREPAIR INSTRUCTIONSINTERMEDIATE SHAFT BEARING ASSEMBLY REPLACEMENT - FRONT DRIVE AXLE (S4WD)INSTALLATION PROCEDURE

2003 Chevrolet TrailBlazer 4.2 S, 4WD

Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation Procedure

Install the actuator to the intermediate shaft bearing assembly.
NOTE: Refer to Fastener Notice in Cautions and Notices.
Install the actuator assembly to intermediate shaft bearing assembly mounting bolts.
Tighten

Tighten the actuator assembly mounting bolts to 6 N.m (53 lb in).

IMPORTANT: Do not nick or cut the inboard (oil pan) inner shaft seal.
Install the intermediate shaft bearing assembly to the oil pan.

Fig 1: Installing Actuator To Intermediate Shaft Bearing Assembly (S4WD)
Courtesy of GENERAL MOTORS CORP.
Install the intermediate shaft bearing assembly mounting bolts.
Tighten

Tighten the intermediate shaft bearing assembly mounting bolts to 48 N.m (35 lb ft).
Install the wire harness clip.
Connect the electrical connector.
Install the right wheel drive shaft. Refer to WHEEL DRIVE SHAFT REPLACEMENT in Wheel Drive Shafts.
Lower the vehicle.

Fig 2: Installing Intermediate Shaft Bearing Assembly Mounting Bolts (S4WD)
Courtesy of GENERAL MOTORS CORP.

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.