2026 GMC Yukon Cooling System Parts

This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator. Read more

5 Coolant / Antifreeze parts are listed for the 2026 GMC Yukon, from VALVOLINE, PRESTONE and ACDELCO. VALVOLINE ZXEL1 carries the "Popular" badge.

In the Economy grade, VALVOLINE supplies 1 part: the catalog's value-priced group. A representative part number is VALVOLINE 719009.

The Heavy Duty section lists 1 option from PRESTONE — rated for severe service. PRESTONE AFC12100 is listed in this group.

The Standard Replacement section lists 3 options from VALVOLINE and ACDELCO — built to original-equipment specification. VALVOLINE ZXEL1 is listed in this group.

This group includes VALVOLINE ZXEL1, VALVOLINE 719009 and PRESTONE AFC12100 and the remaining parts above.

This table covers the Coolant Air Bleed Hose pipes. Read more

One part is listed for the 2026 GMC Yukon — GM GENUINE 85044182.

This table covers the hard pipes and extra hoses in the coolant circuit. Read more

GM GENUINE supplies both parts for the 2026 GMC Yukon.

This group includes GM GENUINE 85044170 and GM GENUINE 85044165.

This table covers the Coolant Hose Connector flanges. Read more

One part is listed for the 2026 GMC Yukon — GM GENUINE 1510595.

This table covers the Coolant Hose retainers and clips. Read more

GM GENUINE supplies both parts for the 2026 GMC Yukon.

This group includes GM GENUINE 11548672 and GM GENUINE 11549297.

This table covers the overflow / expansion tanks that hold extra coolant. Read more

This group shows a single part: GM GENUINE 84632822.

This table covers the Hose clamps. Read more

GM GENUINE supplies the 4 Hose Clamp parts for the 2026 GMC Yukon.

Part numbers include GM GENUINE 90572594, GM GENUINE 11548976 and GM GENUINE 90530642, among others listed above.

This table covers the Intercooler Hose / Pipe clamps. Read more

This group shows a single part: GM GENUINE 11549085.

This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap. Read more

3 Radiator parts are listed for the 2026 GMC Yukon, from GM GENUINE and GPD.

Economy: 1 part, from GPD. A representative part number is GPD 13920C.

The Standard Replacement section: 2 options from GM GENUINE. GM GENUINE 85575817 is listed in this group.

Part numbers include GPD 13920C, GM GENUINE 85575817 and GM GENUINE 85575818.

This table covers the caps that hold system pressure at the radiator or reservoir neck. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

One part is listed for the 2026 GMC Yukon — ACDELCO RC124.

This table covers the petcocks used to drain the radiator. Read more

This group shows a single part: GM GENUINE 22790134.

This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator. Read more

2 Radiator Fan Assembly parts for the 2026 GMC Yukon come from GM GENUINE.

This group includes GM GENUINE 85654567 and GM GENUINE 86777556.

This table covers the Radiator Fan motors. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

One part is listed for the 2026 GMC Yukon — GM GENUINE 85654566.

This table covers the shrouds that duct air through the fan and radiator. Read more

One part is listed for the 2026 GMC Yukon — GM GENUINE 84120130.

This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

2 Radiator Hose parts for the 2026 GMC Yukon come from ACDELCO.

Listed part numbers: ACDELCO 85522402 and ACDELCO 85510485.

This table covers the Radiator Overflow Tube repair kits. Read more

This group shows a single part: GM GENUINE 22799347.

This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender. Read more

2 Temperature Sender / Sensor parts are listed for the 2026 GMC Yukon, from HOLSTEIN and GM GENUINE.

Economy: 1 part, from HOLSTEIN. A representative part number is HOLSTEIN 2CTS0184.

The Standard Replacement section: 1 option from GM GENUINE. GM GENUINE 25186240 is listed in this group.

Part numbers include HOLSTEIN 2CTS0184 and GM GENUINE 25186240.

This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part. Read more

2 Thermostat parts for the 2026 GMC Yukon come from 2 brands — GM GENUINE and MOTORAD.

This group includes GM GENUINE 19420815 and MOTORAD 1333196.

This table covers the housings and outlets the thermostat sits in. Read more

This group shows a single part: MOTORAD CH5945.

This table covers the gaskets that seal the Water Inlet. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

One part is listed for the 2026 GMC Yukon — GM GENUINE 12587397.

This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off. Read more

This group shows a single part: GM GENUINE 13551859.

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

One part is listed for the 2026 GMC Yukon — GM GENUINE 2512073.