GMC Yukon coolant leak issue from the back passenger side after radiator, water pump, and thermostat replacement on GMC Yukon

Some GMC Yukon owners report experiencing coolant leaks from the back passenger side after replacing the radiator, water pump, and thermostat. Common causes for these leaks include loose hose connections in the cooling system, which may not be properly secured. Additionally, issues with the plastic Ts in the heater hoses near the passenger side firewall can lead to cracks or leaks. Some owners also notice leaks from the small overflow hose on the passenger side of the engine compartment. Furthermore, misalignment of the drain tube from the firewall can cause condensate to leak onto the carpet. It is crucial to address these coolant leaks promptly to avoid engine overheating and potential damage, with signs of a leak including overheating, decreased coolant levels, and colorful puddles under the car. If the problem persists after checking these potential issues, consulting a mechanic or GMC dealership for further diagnosis and repair is advisable.