GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 TrailBlazer - 2WD 🢒 Engine 🢒 Engine Controls and Fuel - 5.3L 🢒 Spark Plug Wire Replacement

Removal Procedure

    Object Number: 343699 Size: SH
  1. Remove the spark plug wire from the spark plug.
    2. • Twist each spark plug 1/2 turn.
    • Pull only on the boot in order to remove the wire from each spark plug.
  2. Remove the spark plug wire from the ignition coil.
    3. • Twist each spark plug boot 1/2 turn.
    • Pull only on the boot in order to remove the wires from the ignition coil.

Installation Procedure

    Object Number: 343699 Size: SH
  1. Install the spark plug wire to the ignition coil.
  2. Install the spark plug wire to the spark plug.
  3. Inspect the wires for proper installation:
    4. • Push sideways on each boot in order to inspect the seating.
    • Reinstall any loose boot.