Silverado 1500 2WD V6-4.3L (2007)
2. Pull ONLY on the spark plug boot or use a tool designed for this purpose in order to remove the spark plug wire boot from the spark plug.
3. Open the spark plug wire separators (1).
4. Remove the appropriate spark plug wire(s).
Installation Procedure
Notice: If the boot to wire movement has occurred, the boot will give a false visual impression of being fully seated. Ensure that the boots have been
properly assembled by pushing sideways on the installed boots. Failure to properly seat the terminal onto the spark plug will lead to wire core erosion
and result in an engine misfire or crossfire condition, and possible internal damage to the engine.
1. If reinstalling the old spark plug wires, apply dielectric grease GM PN 12345579 (Canadian PN 10953481), or equivalent to the inside the spark
plug wire boots.
2. Install the appropriate spark plug wire(s)
3. Close the spark plug wire separators (1).
4. Install the appropriate spark plug wire boot(s) (2) to the spark plug. (left side shown, right similar).