Installation Procedure

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Coolant Heater (3.8L)

Courtesy of GENERAL MOTORS CORP.

Apply a coat of GM P/N 12346004, (Canadian P/N 10953480) thread sealant with Teflon or equivalent to the O-ring and clean the surface of the plug opening.
Install the coolant heater by pushing tight to the block.

Fig 2: Identifying Correct Engine Coolant Heater Element Position (3.8L)

Courtesy of GENERAL MOTORS CORP.

Install the coolant heater so the element is at the 9 o'clock position (2).

NOTE: Refer to Fastener Notice in Cautions and Notices.

Tighten the coolant heater bolt until both locking wings draw tight against the inner wall of the engine block.
Tighten: Tighten the bolt to 2 N.m (17 In. Lbs.).

NOTE: The heater cord must not touch the engine, hot pipes, manifold, or any moving parts. Route the cord to the left front of the engine compartment securing with tie straps as necessary to prevent damage.

Connect the coolant heater cord to the coolant heater.
Fill the cooling system. Refer to Draining and Filling Cooling System (L26 Static Fill) , Draining and Filling Cooling System (LY7 Static Fill) or Draining and Filling Cooling System (L26, LY7, GE 47716 Fill) .