Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

Apply a coating of lubricant to the O-ring seal and the cleaned surface of the plug opening in the block. Use a water spray resistant, high-temperature grease lubricant (GM P/N 9985164 or equivalent).
Important: Install the heater element. Avoid element contact to the inner walls of the engine block.
Install the engine coolant heater and push tight to the block.

Fig 1: Installing Heater Element
Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Tighten the bolt until both locking wings draw tight against the inner wall of the engine block.
Tighten

Tighten the bolt to 1.9 N.m (17 lb in).

Fig 2: Tightening Bolt With Wings
Courtesy of GENERAL MOTORS CORP.

Important: The heater cord must not touch the following components:
- The engine
- The hot pipes
- The manifold
- Any moving components
Install the heater cord to the coolant heater.

Fig 3: Installing Heater Cord To Coolant Heater
Courtesy of GENERAL MOTORS CORP.
Route the heater cord (2WD).

Fig 4: Routing Heater Cord (2WD)
Courtesy of GENERAL MOTORS CORP.
Route the heater cord (4WD).
Fill the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM .
Inspect the cooling system for leaks.

Fig 5: Routing Heater Cord (4WD)
Courtesy of GENERAL MOTORS CORP.