Hot Water By-Pass Valve: Installation

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, 2002 Chevrolet RV Cutaway, and 2002 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Install the bypass valve to the vehicle. Connect the heater inlet hose and the outlet hose to the bypass valve. See Fig 2. Install the hose clamps using the Hose Clamp Pliers. See Fig 1.
Connect the vacuum line to the bypass valve. Fill the engine coolant.

Fig 1: Identifying Hose Clamp Pliers (J-39529)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Identifying Coolant Bypass Valve

Courtesy of GENERAL MOTORS CORP.