Removal (4.3L)

Turn ignition off. Disconnect negative battery cable. Remove air cleaner assembly. Disconnect harness connectors from ignition coil. Slightly twist ignition coil wire at ignition coil. See Fig 1. Remove ignition coil wire at ignition coil by pulling on the wire boot.
Remove accelerator cable bracket from intake manifold. Remove ignition coil mounting studs. See Fig 2. Remove ignition coil assembly. Drill and punch out the 2 rivets holding the ignition coil to the bracket. See Fig 3. Remove ignition coil from bracket.

Fig 1: Removing Ignition Coil Wire (4.3L)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Removing Ignition Coil (4.3L)

Courtesy of GENERAL MOTORS CORP.

Fig 3: Removing Ignition Coil & Ignition Control Module From Mounting Bracket (4.3L)

Courtesy of GENERAL MOTORS CORP.