Astro Van 2WD V6-4.3L VIN W (2001)
1. 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).
Notice: The block heater element must not touch the engine block inner wall in the installed position or damage to the engine block and the block
heater could result.
2. Install the engine block heater into the engine block. Position the heater element 90 degrees perpendicular (1) to the crankshaft centerline.
3. Push the engine coolant heater into the block until the outer edge is flush with the engine block surface.
Notice: Refer to Fastener Notice in Service Precautions.
4. Tighten the bolt until both locking wings draw tight against the inner wall of the engine block.
Tighten the bolt to 1.9 Nm (17 inch lbs.).
Notice: 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.
