Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Installation Procedure
- Apply GM P/N 9985164, or equivalent, to the coolant heater seal.
- Ensure that the coolant heater element is horizontal and pointed toward the front of the engine.
The 3 o'clock position (2) is DESIRED.
The 2 o'clock position (1) and the 4 o'clock position (3) are acceptable.
- Install the coolant heater.NOTE: Refer to FASTENER NOTICE .
- Install the coolant heater bolt/screw.
Tighten
Tighten the coolant heater bolt/screw to 2 N.m (18 lb in).
- Install the engine coolant heater cord to the engine coolant heater.
- Install the right engine splash shield. Refer to SPLASH SHIELD REPLACEMENT - ENGINE .
- Install the right front wheel. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION .
- Lower the vehicle.
- Fill the engine cooling system. Refer to Draining and Filling Cooling System .
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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