GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Savana 🢒 Engine 🢒 Engine Controls - 6.5L (L65) 🢒 Fuel Heater Replacement

Removal Procedure

    Caution: To avoid any vehicle damage, serious personal injury or death when major components are removed from the vehicle and the vehicle is supported by a hoist, support the vehicle with jack stands at the opposite end from which the components are being removed and strap the vehicle to the hoist.

  1. Raise the vehicle.

    2. Object Number: 63084 Size: SH
  2. Remove the fuel tank filler cap.
  3. Remove the protective cover from fuel manager/filter.

    4. Object Number: 37978 Size: SH
  4. Open the air bleed valve (4) on top of the fuel manager/filter (3) in order to release any of the pressure in the fuel supply system.
  5. Disconnect the fuel heater connector (1).
  6. Remove the fuel heater threaded nut by turning counter clock wise.

    7. Use a hand pressure or a strap wrench in order to remove the fuel heater threaded nut.

  7. Remove the fuel heater (2) from the filter housing by pulling straight up.

Installation Procedure

    Object Number: 37978 Size: SH
  1. Install the cap seal into the filter housing.
  2. Install the fuel heater by pushing straight down (2).
  3. Install the fuel heater threaded nut.
  4. Reconnect fuel heater connector (1).
  5. Install the protective cover on the fuel manager/filter.
  6. Install the fuel tank filler cap.
  7. Bleed the air from the fuel manager/filter. Refer to Fuel Feed Pipe and Return Pipe Purging .
  8. Lower the vehicle.