P3075 on Chevrolet: How to Diagnose & Fix
Engine Coolant Pump Low Current Performance
1 Chevrolet model · 1 documented issue · 1 critical · $200-$600 repair
P3075 on Chevrolet by model: symptoms, diagnosis and fix
The third-generation Traverse's 2.5L turbocharged four-cylinder LK0 uses plastic quick-connect fittings at the radiator hoses instead of conventional clamps. Owners report the connector at the upper radiator inlet hose weeping and then losing coolant well inside the warranty period — a class action filed in 2026 covering 2024-2026 Traverse, 2024-2026 Acadia and 2025-2026 Enclave with the LK0 alleges the fittings fail prematurely and let the engine run without adequate coolant. Documented consequences run from a low-coolant lamp and a P3075 code through reduced power/limp mode to overheating damage. GM has since extended special warranty coverage on the radiator inlet hose quick connect. This is a third-generation-only issue and shares nothing with the V6 water pump leaks of earlier Traverses.
Common Symptoms
- Low coolant warning message
- Coolant smell or residue at the upper radiator hose
- Coolant puddle under the front of the vehicle
- Check engine light
- Reduced engine power / limp mode
- Rising temperature gauge
How to Fix
Treat any low-coolant message on an LK0 Traverse as a leak, not evaporation — pressure test the system cold and inspect the upper radiator inlet hose quick connect specifically, where the residue is usually visible as dried coolant around the collar. The repair is replacement of the hose and quick-connect assembly with the updated part. GM's special coverage runs five years/60,000 miles from the original in-service date and transfers with the vehicle, so check the VIN before paying. If the engine has already been operated hot, have the cylinder head and gasket evaluated before assuming the hose fix ended the matter.
Sources for this issue (4)
- GM Class Action Lawsuit Focuses on Radiator Hose Connector — CarComplaints.comarticle
- Chevy Traverse, GMC Acadia And Buick Enclave Get Extended Radiator Hose Leak Warranty Coveragemanufacturer
- GM Hit With Turbo Four-Cylinder Engine Radiator Hose Lawsuitarticle
- GM class action alleges coolant leak defect affects Chevrolet, GMC and Buick vehiclesarticle
P3075 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P3075 mean on a Chevrolet?
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 Chevrolet it is documented across 1 model: Traverse.
What are the most common causes of P3075?
The most common causes of P3075 are: 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). The specific cause varies by vehicle.
How much does it cost to fix P3075 on a Chevrolet?
Published repair estimates on Chevrolet range from $200 to $600 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P3075 on a different make?
View P3075 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.