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chevrolet Workshop Repair Guides


C 30 1 Ton Pickup 2WD V8-454 7.4L VIN W 4-bbl (1983)

Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Ignition System > Ignition Control Module > Component Information > Technical Service Bulletins > Page 99

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3.

If necessary, realign pole piece to provide adequate clearance and secure properly.

4.

Install pickup coil shield, if equipped, then install washer and distributor shaft.

5.

Install tanged washer, shim and drive gear (teeth up) to bottom of shaft. Align drive gear and install new roll pin.

HALL EFFECT SWITCH, REPLACE

1.

Disconnect battery ground cable, then remove distributor cap and rotor.

2.

Remove switch retaining screws.

3.

Disconnect electrical connector while pulling switch away from distributor.

4.

Reverse procedure to install. After switch is installed, carefully rotate distributor shaft and check for interference with pole piece. If pole piece
contacts switch, loosen switch retaining screws and realign switch as needed.

Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Ignition System > Ignition Control Module > Component Information > Technical Service Bulletins > Page 99

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