2020-2023 GMC Sierra 2500 3500 HD Aux Heater Wiring Harness Cover OEM

Name: 2020-2023 GMC Sierra 2500 3500 HD Aux Heater Wiring Harness Cover OEM
Brand: GM
SKU: 84392052
Price: 16.45 USD
Availability: InStock

$ 16.45

🏁 Please confirm this part fits your vehicle before ordering

100% Genuine OEM Factory original part

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This is a Genuine GM OEM Auxiliary Heater Wiring Harness Cover, designed for the 2020–2023 GMC Sierra 2500 HD and Sierra 3500 HD. Note that only the part referenced as item #8 on the manufacturer's diagram is included in this listing.

This part is a direct-fit OEM replacement backed by a genuine GM fitment guarantee. Compatible with 6.0L V8, 6.6L V8 gas, and 6.6L V8 Duramax diesel engines across both the Sierra 2500 HD and Sierra 3500 HD for model years 2020 through 2023.

Quick Part Facts

Condition: New OEM Genuine GM
Compatible Engines: 6.0L V8, 6.6L V8 Gas, 6.6L V8 Duramax Diesel
Part Type: Auxiliary Heater Wiring Harness Cover
Direct Replacement: Yes
Important: Only item #8 on the diagram is included — not the full assembly

Fitment

Year Range	Make	Model	Trim/Engine	Notes/Options
2020-2023	GMC	Sierra 2500 HD	6.0L V8, 6.6L V8 Gas, 6.6L V8 Duramax Diesel	Auxiliary Heater; Only part #8 on diagram included
2020-2023	GMC	Sierra 3500 HD	6.0L V8, 6.6L V8 Gas, 6.6L V8 Duramax Diesel	Auxiliary Heater; Only part #8 on diagram included

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