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 DIAGNOSISENGINE, COOLING AND EXHAUSTENGINESERVICE AND REPAIROVERHAULREPAIR INSTRUCTIONS72. CRANKSHAFT BALANCER INSTALLATION
2003 Chevrolet Express 1/2 Ton Van V6-4.3L VIN X
72. Crankshaft Balancer Installation
2003 Chevrolet Express 1/2 Ton Van V6-4.3L VIN XSECTION 72. Crankshaft Balancer Installation
Crankshaft Balancer Installation
^ Tools Required
- J 23523-F Balancer Remover and Installer
1. Look to ensure that the crankshaft balancer front groove pin is installed in the proper location, if applicable.
The length and location of the pins must be the same as the original length and location.
Notice: The inertial weight section of the crankshaft balancer is assembled to the hub with a rubber type material. The correct installation procedures (with the proper tool) must be followed or movement of the inertial weight section of the hub will destroy the tuning of the crankshaft balancer.
2. Apply a small amount of adhesive GM P/N 12346141 (Canadian P/N 10953433) or equivalent, onto the crankshaft balancer keyway in order to seal the crankshaft balancer keyway and crankshaft joint.
3. Align the keyway of the crankshaft balancer with the crankshaft balancer key.
4. Install the crankshaft balancer onto the end of the crankshaft.
Notice: Refer to Fastener Notice in Service Precautions.
5. Use the J 23523-F in order to press the crankshaft balancer onto the crankshaft.
5.1. Install the J 23523-F plate and bolts onto the front of the crankshaft balancer.
^ Tighten the J 23523-F plate bolts to 25 Nm (18 ft. lbs.).
5.2. Install the J 23523-F screw into the end for the crankshaft.
5.3. Install the J 23523-F bearing, the washer, and the nut onto the J 23523-F screw.
5.4. Rotate the J 23523-F nut clockwise until the crankshaft balancer hub is completely seated against the crankshaft position sensor reluctor ring.
6. Remove the J 23523-F.
7. Install the crankshaft pulley and bolts.
^ Tighten the crankshaft pulley bolts to 58 Nm (43 ft. lbs.).
8. Ensure that the crown of the crankshaft balancer washer (2) is faced away from the engine.
9. Install the crankshaft balancer washer and the bolt.
^ Tighten the crankshaft balancer bolt to 95 Nm (70 ft. lbs.).
^ Tools Required
- J 23523-F Balancer Remover and Installer
1. Look to ensure that the crankshaft balancer front groove pin is installed in the proper location, if applicable.
The length and location of the pins must be the same as the original length and location.
Notice: The inertial weight section of the crankshaft balancer is assembled to the hub with a rubber type material. The correct installation procedures (with the proper tool) must be followed or movement of the inertial weight section of the hub will destroy the tuning of the crankshaft balancer.
2. Apply a small amount of adhesive GM P/N 12346141 (Canadian P/N 10953433) or equivalent, onto the crankshaft balancer keyway in order to seal the crankshaft balancer keyway and crankshaft joint.
3. Align the keyway of the crankshaft balancer with the crankshaft balancer key.
4. Install the crankshaft balancer onto the end of the crankshaft.
Notice: Refer to Fastener Notice in Service Precautions.
5. Use the J 23523-F in order to press the crankshaft balancer onto the crankshaft.
5.1. Install the J 23523-F plate and bolts onto the front of the crankshaft balancer.
^ Tighten the J 23523-F plate bolts to 25 Nm (18 ft. lbs.).
5.2. Install the J 23523-F screw into the end for the crankshaft.
5.3. Install the J 23523-F bearing, the washer, and the nut onto the J 23523-F screw.
5.4. Rotate the J 23523-F nut clockwise until the crankshaft balancer hub is completely seated against the crankshaft position sensor reluctor ring.
6. Remove the J 23523-F.
7. Install the crankshaft pulley and bolts.
^ Tighten the crankshaft pulley bolts to 58 Nm (43 ft. lbs.).
8. Ensure that the crown of the crankshaft balancer washer (2) is faced away from the engine.
9. Install the crankshaft balancer washer and the bolt.
^ Tighten the crankshaft balancer bolt to 95 Nm (70 ft. lbs.).
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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.