Installation Procedure

IMPORTANT: The replacement A/C and heater pipes are shipped in front and rear sections.

Fig 1: Identifying Auxiliary Heater Tubes Clip

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Fig 2: Auxiliary Heater Tubes Clip Push Pins Locations

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Install the auxiliary heater tubes clip push pins (1) to vehicle frame locations.

Fig 3: Identifying Auxiliary Heater Tubes Connector Nuts

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NOTE: Refer to Fastener Notice .

IMPORTANT: Use a adjustable wrench or equivalent holding tool at tube connections to prevent twisting.

IMPORTANT: Mandatory torque sequence required for proper connections.

Install the auxiliary heater tube connection nuts (2) to the intermediate connection point.
Tighten: Tighten the nuts to 16 N.m (12 lb ft).

Fig 4: Hose Connection Components

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IMPORTANT: Firmly push the quick connect onto the main heater hose connection until you here an audible click.

Install the auxiliary heater tubes (1) to the main heater hose connections.
Install the front wheelhouse liner if necessary. Refer to Wheelhouse Panel Replacement .
Install the right assist step if necessary. Refer to Assist Step Replacement (w/WS2, BVX) or Assist Step Replacement (Tubular BVE) .
Lower the vehicle.
Fill the engine coolant. Refer to Cooling System Draining and Filling (Static Fill) or Cooling System Draining and Filling (Vac-N-Fill) .