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 MANUALSCHEVROLET2003EXPRESS 1/2 TON VAN V6-4.3L VIN XREPAIR AND DIAGNOSISSTEERING AND SUSPENSIONSUSPENSIONSTABILIZER BARSTABILIZER BUSHINGSERVICE AND REPAIR
2003 Chevrolet Express 1/2 Ton Van V6-4.3L VIN X
Stabilizer Bushing: Service and Repair
2003 Chevrolet Express 1/2 Ton Van V6-4.3L VIN XSECTION Service and Repair
Stabilizer Shaft Insulator Replacement
Removal Procedure
1. Raise and support the vehicle. Refer to Vehicle Lifting.

2. Remove the stabilizer shaft insulator clamps mounting bolts (4) (1500 and 2500 series w/7300 GVW).
3. Remove the stabilizer shaft insulator clamps (3) from the stabilizer shaft insulator (Z) (1500 and 2500 series w/7300 GVW).
4. Lower the stabilizer shaft (5) and remove the stabilizer shaft insulator (2) (1500 and 2500 series w/7300 GVW).

Important: The stabilizer shaft insulator stud may come out of the frame when removing stabilizer shaft insulator mounting nuts.
5. Remove the stabilizer shaft insulator clamps nuts (3) and/or studs (2500 series w/8500 and 8600 GVW and 3500 series).
6. Remove the stabilizer shaft clamps (4) (2500 series w18500 and 8600 GVW and 3500 series).
7. Lower the stabilizer shaft (2) and remove the stabilizer shaft insulators (5) (2500 series w18500 and 8600 GVW and 3500 series).
8. Inspect all of the parts for wear and damage.
Installation Procedure

Notice: Refer to Fastener Notice in Service Precautions.
1. Install the stabilizer shaft insulator clamp studs, if removed (2500 series w/8500 and 8600 GVW and 3500 series).
- Tighten the studs to 25 Nm (18 ft. lbs.).
Important: Place the stabilizer shaft insulators on the stabilizer shaft with the slits facing toward the front of the vehicle.
2. Install the stabilizer shaft insulators (5) to the stabilizer shaft (2) (2500 series w/8500 and 8600 GVW and 3500 series).
3. Install the stabilizer shaft clamps (4) over the insulators and the stabilizer shaft (2) (2500 series w18500 and 8600 GVW and 3500 series).
4. Install stabilizer shaft insulator clamps nuts (3) (2500 series w/8500 and 8600 GVW and 3500 series).
- Tighten the nuts to 46 Nm (34 ft. lbs.).

Important: Place the stabilizer shaft insulators on the stabilizer shaft with the slits facing toward the front of the vehicle.
5. Install the stabilizer shaft insulator (2) to stabilizer shaft (5) (1500 and 2500 series w/7300 GVW).
6. Install the stabilizer shaft insulator clamps (3) to the stabilizer shaft insulator (2) (1500 and 2500 series w/7300 GVW).
7. Install the stabilizer shaft insulator clamps mounting bolts (4) (1500 and 2500 series w/7300 GVW).
- Tighten
- Tighten the bolts to 25 Nm (18 ft. lbs.).
8. Lower the vehicle.
Removal Procedure
1. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Remove the stabilizer shaft insulator clamps mounting bolts (4) (1500 and 2500 series w/7300 GVW).
3. Remove the stabilizer shaft insulator clamps (3) from the stabilizer shaft insulator (Z) (1500 and 2500 series w/7300 GVW).
4. Lower the stabilizer shaft (5) and remove the stabilizer shaft insulator (2) (1500 and 2500 series w/7300 GVW).
Important: The stabilizer shaft insulator stud may come out of the frame when removing stabilizer shaft insulator mounting nuts.
5. Remove the stabilizer shaft insulator clamps nuts (3) and/or studs (2500 series w/8500 and 8600 GVW and 3500 series).
6. Remove the stabilizer shaft clamps (4) (2500 series w18500 and 8600 GVW and 3500 series).
7. Lower the stabilizer shaft (2) and remove the stabilizer shaft insulators (5) (2500 series w18500 and 8600 GVW and 3500 series).
8. Inspect all of the parts for wear and damage.
Installation Procedure
Notice: Refer to Fastener Notice in Service Precautions.
1. Install the stabilizer shaft insulator clamp studs, if removed (2500 series w/8500 and 8600 GVW and 3500 series).
- Tighten the studs to 25 Nm (18 ft. lbs.).
Important: Place the stabilizer shaft insulators on the stabilizer shaft with the slits facing toward the front of the vehicle.
2. Install the stabilizer shaft insulators (5) to the stabilizer shaft (2) (2500 series w/8500 and 8600 GVW and 3500 series).
3. Install the stabilizer shaft clamps (4) over the insulators and the stabilizer shaft (2) (2500 series w18500 and 8600 GVW and 3500 series).
4. Install stabilizer shaft insulator clamps nuts (3) (2500 series w/8500 and 8600 GVW and 3500 series).
- Tighten the nuts to 46 Nm (34 ft. lbs.).
Important: Place the stabilizer shaft insulators on the stabilizer shaft with the slits facing toward the front of the vehicle.
5. Install the stabilizer shaft insulator (2) to stabilizer shaft (5) (1500 and 2500 series w/7300 GVW).
6. Install the stabilizer shaft insulator clamps (3) to the stabilizer shaft insulator (2) (1500 and 2500 series w/7300 GVW).
7. Install the stabilizer shaft insulator clamps mounting bolts (4) (1500 and 2500 series w/7300 GVW).
- Tighten
- Tighten the bolts to 25 Nm (18 ft. lbs.).
8. Lower the vehicle.
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.