K 2500 Suburban 4WD V8-5.7L VIN R (1999)
Heater Hose: Service and Repair
Auxiliary (Suburban-Rear)
REMOVAL PROCEDURE
TOOLS REQUIRED
J 38723 Heater Line Quick Connect Separator
1. Raise the vehicle.
Support the vehicle with suitable safety stands. Refer to Lifting and Jacking the Vehicle.
2. Drain the engine coolant. Refer to Draining and Filling Cooling System.
3. Remove the bolts.
4. Perform the following steps in order to disconnect the rear hose assembly (2) from the front hose assembly.
4.1. Push the rear hose assembly (2) into the front hose assembly.
4.2. Insert the J 38723 into the hose in order to release the locking tabs.
5. Perform the following steps in order to disconnect the rear hose assembly from the auxiliary heater core (4).
5.1. Push the rear hose assembly into the auxiliary heater core.
5.2. Insert the J 38723 into the hose in order to release the locking tabs.
INSTALLATION PROCEDURE
1. Push the rear hose assembly (2) into the front hose assembly until the retainer tabs lock in order to connect the hose assemblies.
2. Push the rear hose assembly (2) into the auxiliary heater core (4) until the retainer tabs lock in order to connect the hoses with the heater core.
NOTE: Refer to Fastener Notice in Cautions and Notices.
3. Install the bolts.
Tighten
