WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

If installing a NEW distributor, place 2 marks on the new distributor housing in the same location as the marks on the original housing.
Align the rotor with the second mark (2).

Fig 1: View Of Second Mark On Base Of Distributor

Courtesy of GENERAL MOTORS CORP.

Install the distributor.
Align the hole in the distributor hold-down clamp over the hole in the intake manifold.

Fig 2: View Of Distributor

Courtesy of GENERAL MOTORS CORP.

As the distributor is being installed, observe the rotor moving in a clockwise direction about 42 degrees.

IMPORTANT: If the rotor segment is not aligned with the number 1 mark, the driven gear teeth and the camshaft have meshed one or more teeth out of alignment. In order to correct this condition, remove the distributor and reinstall it.

Once the distributor is completely seated, the rotor segment should be aligned with the mark on the distributor base (1).

Fig 3: Marking Position Of Rotor In Relation To Distributor Housing

Courtesy of GENERAL MOTORS CORP.

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.

Safety Warning

Installation Procedure 1

Use the Manual With the Right Hardware

When to See a Mechanic

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