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 MANUALSCHEVROLET1999ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISSTARTING AND CHARGINGCHARGING SYSTEMALTERNATORSERVICE AND REPAIR
1999 Chevrolet Astro Van 2WD V6-4.3L VIN W
Alternator: Service and Repair
1999 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Service and Repair
REMOVAL PROCEDURE
CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
1. Disconnect the battery negative cable.
2. Remove the air cleaner assembly.
3. Remove the drive belt.
4. Disconnect the regulator electrical connector.
5. Remove the generator front mounting bolts.
6. Remove the generator rear mounting bolt.
7. Remove the generator output (BAT) terminal nut.
8. Remove the generator.
INSTALLATION PROCEDURE
1. Position the generator on the vehicle.
NOTE: Refer to Fastener Notice in Cautions and Notices.
2. Loosely install the mounting bolts.
3. Install the generator output (BAT) lead.
4. Loosely install the generator output (BAT) nut.
Tighten
^ Tighten the mounting bolts to 50 N.m (37 lb ft).
^ Tighten the generator output (BAT) terminal nut to 20 N.m (15 lb ft).
5. Connect the regulator electrical connector.
6. Install the drive belt.
7. Install the air cleaner.
8. Connect the battery negative cable.
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.