Coolant Line/Hose: Service and Repair

Engine Coolant Crossover Pipe Replacement (LZE/LZ4/LZ8)

Removal Procedure




1. Remove the intake manifold cover.
2. Remove the generator.
3. Remove the drive belt idler pulleys.
4. Remove the power steering pump.
5. Reposition the coolant recovery reservoir hose clamp at the fill tube fitting.
6. Remove the coolant recovery reservoir hose from the fill tube fitting. Position the hose out of the way.




7. Reposition the radiator inlet hose clamp at the crossover pipe (3.5L shown, 3.9L similar).
8. Remove the radiator inlet hose from the crossover pipe.




9. Reposition the thermal bypass hose clamp at the crossover pipe.
10. Remove the thermal bypass hose from the crossover pipe.




11. Remove the coolant crossover pipe bolts.
12. Remove the coolant crossover pipe.

Installation Procedure




1. Position the coolant crossover pipe to the cylinder heads.
Notice: Refer to Fastener Notice.

2. Install the coolant crossover pipe bolts.

Tighten the bolts to 50 N.m (37 lb ft).




3. Install the thermal bypass hose to the crossover pipe.
4. Position the thermal bypass hose clamp at the crossover pipe.




5. Install the radiator inlet hose to the crossover pipe (3.5L shown, 3.9L similar).
6. Position the radiator inlet hose clamp at the crossover pipe.




7. Install the coolant recovery reservoir hose to the fill tube fitting.
8. Position the coolant recovery reservoir hose clamp at the fill tube fitting.
9. Install the power steering pump.
10. Install the drive belt idler pulleys.
11. Install the generator.
12. Install the intake manifold cover.