Installation Procedure

WARNING: This page is about a different car, the 2007 Pontiac Montana SV6, 2007 Chevrolet Uplander, and 2007 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Coolant Heater

Courtesy of GENERAL MOTORS CORP.

Remove any burrs, sealer, paint or other foreign material from the threads/sealing surface of the engine block and from the old coolant heater if the heater is to be reused.
If reusing the old coolant heater, apply thread sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent to the threads.

NOTE: Refer to Component Fastener Tightening Notice .

Install the coolant heater to the engine block.
Tighten: Tighten the coolant heater to 50 N.m (37 lb ft).

Fig 2: Identifying Coolant Heater

Courtesy of GENERAL MOTORS CORP.

Connect the coolant heater cord (1) to the heater.
Fill the cooling system. Refer to Draining and Filling Cooling System (Static Fill LZ9) or Draining and Filling Cooling System (Vac-N-Fill) .