P0480 on GMC
Cooling Fan 1 Control Circuit
P0480 on GMC vehicles indicates cooling fan 1 control circuit. Au7o has documented this code across 1 GMC model — most commonly on Envoy. P0480 indicates a fault in the engine control module's circuit that operates cooling fan 1 (or the fan relay it drives). The computer detected an open, short, or out-of-range condition in the fan control output. Because the cooling fan helps prevent the engine from overheating — especially at idle, low speeds, or with the A/C on — a fan that won't run can lead to high coolant temperatures. It is worth addressing fairly promptly to avoid overheating, particularly in hot weather or stop-and-go traffic. Typical repair costs on GMC range from $200 to $500, depending on the specific model and root cause.
Common Causes of P0480
- •Faulty cooling fan relay
- •Failed cooling fan motor
- •Wiring damage, shorts, or corroded connectors in the fan circuit
- •Blown fuse or fusible link for the fan
- •Poor ground for the fan motor or relay
- •Faulty fan control module (where used)
- •PCM driver circuit fault (less common)
P0480 on GMC by Model
GMC Envoy(1 issue)
- Electric Cooling Fan Clutch Failure2002-2009
The electronically controlled fan clutch fails, causing overheating in traffic or at low speeds. The Envoy uses a clutch-type fan rather than electric fans, and the electronic control module in the clutch is the weak point.
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View P0480 across all makes →Frequently Asked Questions
What does P0480 mean on GMC?▼
P0480 stands for "Cooling Fan 1 Control Circuit." P0480 indicates a fault in the engine control module's circuit that operates cooling fan 1 (or the fan relay it drives). The computer detected an open, short, or out-of-range condition in the fan control output. Because the cooling fan helps prevent the engine from overheating — especially at idle, low speeds, or with the A/C on — a fan that won't run can lead to high coolant temperatures. It is worth addressing fairly promptly to avoid overheating, particularly in hot weather or stop-and-go traffic. On GMC specifically, this code is documented across 1 model.
What causes P0480 on GMC vehicles?▼
Common causes on GMC: Faulty cooling fan relay, Failed cooling fan motor, Wiring damage, shorts, or corroded connectors in the fan circuit, Blown fuse or fusible link for the fan, Poor ground for the fan motor or relay. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0480 on a GMC?▼
Repair costs on GMC range from $200 to $500, depending on the specific model and root cause.
Which GMC models have P0480 documented?▼
Au7o has documented P0480 on 1 GMC model: Envoy.