complaints.title

Coolant leak caused by known manufacture defect in upper hose assembly causes coolant to drain and engine to overheat. CEL only comes on when coolant is almost gone. GMC refuses to cover the known iss…

Radiator Hose began to leak coolant. Faulty radiator hose. This could have caused engine failure and potentially caused an accident or may have put others at risk for hazards. No warning other strang…

Upper radiator hose connection to radiator is faulty causing leak of coolant. Yes it is available for inspection upon request. Truck began to run cooling fan at full speed in the middle of winter wit…

Coolant Leaking at 22K miles, smell of coolant, check engine light on and off 2X's. Coolant evidence on driveway and in engine cabin. Known condition for GM Model. No parts available for replacement. …

There are widespread reports of the O ring seals on the radiator and heater hoses failing and causing coolant leaks. These leaks are significant enough to render the vehicle inoperable and with no cab…

Upper radiator hose attachment is leaking due to faulty rubber gasket. This comes up across GMC Canyon groups on Facebook 10 times a day. It is happening to ALL of them mainly pre 2025 on 3rd gens. Pa…

Truck began idling very rough. Went straight to the dealership. They shut the truck off and it would not restart. No CEL or messages on the dash. Tear down reveled a failed exhaust valve in cylind…

Upper radiator hose leaks where it connects to radiator. 40k miles and my truck has no coolant

I first noticed the brakes squealing in August 2025 at 15,000 miles. The dealership said I needed to resurface the front rotors. I mistook this a coating and brake debris, but it was actually the roto…

The Driver Information Center located directly in front of the driver that contains the speedometer, tachometer, oil pressure...etc., has a very distracting background. The background is a geometric …