K 1500 Yukon 4WD V8-5.3L VIN Z Flex Fuel (2003)
8. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the threads of the coil bracket studs.
9. Install the ignition coil bracket.
10. Install the ignition coil bracket studs.
Tighten the studs to 12 Nm (106 inch lbs.).
11. If equipped with the 4.8L, 5.3L, or 6.0L (LQ4) engine, perform the following:
11.1.
Install the heater hose bracket and nut.
Tighten the nut to 9 Nm (80 inch lbs.).
11.2.
Position the surge tank/heater hoses to the heater hose bracket.
12. Install the spark plug wires to the ignition coils.
13. Position the engine harness, if necessary