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How do you Change, Replace, or Install Broken 1996-1999 Cadillac DeVille Ignition Coil Replacement

Fits Years: 1996, 1997, 1998, 1999


Tools required:

  • 7/32 socket/ratchet with extension


Step 1: Open the vehicle's hood.

NOTE: We recommend replacing ALL of the ignition coils once one begins to fail, as they often require replacing in unison. However, only replace them ONE AT A TIME during the process. Also, we'll be disconnecting the sparkplug wires. These wires MUST attach to the same sparkplug when we reattach them!

Step 2: Locate the ignition coils on the backside of the engine.

Step 3: Disconnect the sparkplug wires (2) from the first ignition coil.

Step 4: Loosen and remove the 7/32 mounting bolts (2) that secure the ignition coil to the engine.

Step 5: You can now lift and remove the ignition coil.

Step 6: Mount the new ignition coil by tightening the 7/32 mounting bolts (2).

Step 7: Reattach the sparkplug wires (2) to the SAME PLUGS AS BEFORE.

Step 8: Repeat this process for the remaining ignition coils.



These Part Change / Installation Instructions Apply to
99 1999, 98 1998, 97 1997, 96 1996 Cadillac DeVille Ignition Coil Replacement Instructions
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