P3075 on GMC
Engine Coolant Pump Low Current Performance
P3075 on GMC vehicles indicates engine coolant pump low current performance. Au7o has documented this code across 1 GMC model — most commonly on Canyon. General Motors powertrain code. On engines with an electrically driven or electrically assisted coolant pump, the ECM monitors the current the pump draws as a proxy for how much coolant it is actually moving. P3075 sets when engine coolant pump current falls outside its calibrated range for more than about three seconds — the pump is drawing too little current, which means it is not moving the expected volume of coolant. GM describes the resulting condition as engine coolant flow too low; the pump is often working correctly and the real problem is that it has nothing solid to pump, because the system has lost coolant or has air in it. Typical repair costs on GMC range from $250 to $550, depending on the specific model and root cause.
Common Causes of P3075
- •Low coolant level from an external leak
- •Air trapped in the cooling system after a coolant service or a leak, letting the pump cavitate
- •Leaking plastic coolant control valve / integrated water pump assembly or its housing — a known failure point on GM 1.2L/1.3L/2.7L engines
- •Leaking radiator hose connection, thermostat housing or radiator
- •Electrical fault in the coolant pump circuit — wiring, connector or failed pump motor
- •Stuck coolant control valve or restricted coolant passage
- •Faulty ECM (rare)
P3075 on GMC by Model
GMC Canyon(1 issue)
- Upper Radiator Hose Quick-Connect Seal Leak on 2.7L L3B - Coolant Loss, Overheating and P30752023-2026
2023-2026 GMC Canyon trucks with the L3B 2.7L turbocharged four-cylinder use plastic quick-connect fittings at the radiator hose ends. The seal at the upper radiator hose quick connector can fail relatively early in service, allowing a slow coolant leak. Low coolant leads to elevated running temperature, reduced engine performance or limp mode, and in a neglected case sudden shutdown and engine damage. GM issued Service Bulletin PIT6494A in March 2026 addressing upper radiator hose quick-connect seal failure on the Colorado and Canyon, but the bulletin only applies while the truck is inside the 3-year/36,000-mile bumper-to-bumper warranty. A class action (Dixon v. GM, filed 2026) alleges the defect - the named plaintiff's truck logged DTC P3075 with low coolant from a leak at the quick-connect end of the upper radiator hose at about 44,400 miles and was charged $489.36 out of pocket. The same connector family is alleged on the 2.5L LK0 Traverse/Acadia/Enclave, but on the Canyon the affected engine is the 2.7L L3B.
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View P3075 across all makes →Frequently Asked Questions
What does P3075 mean on GMC?▼
P3075 stands for "Engine Coolant Pump Low Current Performance." General Motors powertrain code. On engines with an electrically driven or electrically assisted coolant pump, the ECM monitors the current the pump draws as a proxy for how much coolant it is actually moving. P3075 sets when engine coolant pump current falls outside its calibrated range for more than about three seconds — the pump is drawing too little current, which means it is not moving the expected volume of coolant. GM describes the resulting condition as engine coolant flow too low; the pump is often working correctly and the real problem is that it has nothing solid to pump, because the system has lost coolant or has air in it. On GMC specifically, this code is documented across 1 model.
What causes P3075 on GMC vehicles?▼
Common causes on GMC: Low coolant level from an external leak, Air trapped in the cooling system after a coolant service or a leak, letting the pump cavitate, Leaking plastic coolant control valve / integrated water pump assembly or its housing — a known failure point on GM 1.2L/1.3L/2.7L engines, Leaking radiator hose connection, thermostat housing or radiator, Electrical fault in the coolant pump circuit — wiring, connector or failed pump motor. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P3075 on a GMC?▼
Repair costs on GMC range from $250 to $550, depending on the specific model and root cause.
Which GMC models have P3075 documented?▼
Au7o has documented P3075 on 1 GMC model: Canyon.