2009 Hummer H3 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

17 Coolant / Antifreeze parts for the 2009 Hummer H3 come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 other brands. The "Popular" part is FVP MV5050GAL. Every part fits both the 3.7L L5 and the 5.3L V8.

In the Compatible With All Colors grade, PRESTONE supplies 1 part: grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. A representative part number is PRESTONE AF3055.

The Economy section lists 4 options from FVP, PEAK, PRESTONE and 1 other brand — the catalog's value-priced group. FVP MV5050GAL is listed in this group.

In the Heavy Duty grade, PRESTONE supplies 1 part: rated for severe service. A representative part number is PRESTONE AFC12100.

In the Premium grade, PRESTONE and PEAK supply 4 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.

In the Standard Replacement grade, VALVOLINE, PRESTONE, ACDELCO and 2 other brands supply 7 parts: built to original-equipment specification. A representative part number is ACDELCO 105027.

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

4 Coolant Air Bleed Hose / Pipe parts for the 2009 Hummer H3 come from 3 brands — GM GENUINE, DORMAN and GATES.

Listed part numbers: DORMAN 626591, GATES HHA147 and GM GENUINE 12600254, plus the other parts above.

This table covers the bleeders used to purge air from the coolant circuit. Read more

One part is listed for the 2009 Hummer H3 — GM GENUINE 12602048.

This table covers the seals at the Coolant Hose / Pipe. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

2 Coolant Hose / Pipe Seal parts are listed for the 2009 Hummer H3, from ELRING and FEL-PRO. 1 part fits every engine; the other 1 is engine-specific.

Part numbers include ELRING 868630 and FEL-PRO 36017.

This table covers the Coolant Hose Connector flanges. Read more

This group shows a single part: GM GENUINE 1510595.

This table covers the seals at the Coolant Hose Connector / Flange. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

ELRING supplies both parts for the 2009 Hummer H3.

This group includes ELRING 851630 and ELRING 200060.

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

This group shows a single part: GM GENUINE 15035355.

This table covers the caps on the overflow / expansion tank. 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

6 Coolant Reservoir Cap parts are listed for the 2009 Hummer H3, from DORMAN, MOTORAD, CALORSTAT and 1 other brand. CALORSTAT RC0147 carries the "Popular" badge. 4 parts fit every engine; the other 2 are engine-specific.

Listed part numbers: CALORSTAT RC0147, DORMAN 82594 and DORMAN 82724, plus the other parts above.

This table covers the Coolant Water Crossover Mounting sets. Read more

3 Coolant Water Crossover Mounting Set parts for the 2009 Hummer H3 come from 3 brands — FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ.

Listed part numbers: FEL-PRO ES73027, MAHLE / CLEVITE GS33845 and VICTOR REINZ 181002301.

This table covers the Cooling Fan control modules. Read more

US MOTOR WORKS supplies the 3 Cooling Fan Control Module parts for the 2009 Hummer H3.

Part numbers include US MOTOR WORKS 16749, US MOTOR WORKS 16789 and US MOTOR WORKS 16795.

This table covers the adapters used to pressure-test this cooling system. Read more

4 Cooling System Tester Adapter parts for the 2009 Hummer H3 come from 2 brands — GATES and MOTORAD. Every part fits both the 3.7L L5 and the 5.3L V8.

This group includes GATES 31431, GATES 31391 and MOTORAD 3128 and the remaining parts above.

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

11 Radiator parts for the 2009 Hummer H3 come from 10 brands — SPECTRA PREMIUM, CSF, TYC and 7 other brands. The "Popular" part is CSF 3720. 9 parts fit every engine; the other 2 are engine-specific.

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

3 Radiator Cap parts for the 2009 Hummer H3 come from 3 brands — ACDELCO, GATES and MOTORAD. Every part fits both the 3.7L L5 and the 5.3L V8.

Part numbers include ACDELCO RC85, GATES 31532 and MOTORAD T46.

This table covers the Radiator Fan blades. Typical signs include chatter, streaks, or a skip at the top of the stroke. Confirm left and right lengths in the notes — they are often different. Read more

5 Radiator Fan Blade parts are listed for the 2009 Hummer H3, from DORMAN, VDO / CONTINENTAL and GM GENUINE.

Part numbers include DORMAN 621321, DORMAN 621535 and GM GENUINE 1580698, among others listed above.

This table covers the Radiator Fan clutches. Typical signs include slip at highway speed, chatter on takeoff, or a pedal that stays low. Resurface or replace the flywheel with the clutch — a heat-checked flywheel wastes the new disc. Read more

13 Radiator Fan Clutch parts for the 2009 Hummer H3 come from 8 brands — HAYDEN, US MOTOR WORKS, FOUR SEASONS and 5 other brands. The "Popular" part is HAYDEN 2787.

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

17 Radiator Hose parts are listed for the 2009 Hummer H3, from ACDELCO, GATES, CONTINENTAL and 1 other brand. GATES 22129 carries the "Popular" badge.

This table covers the seals at the Radiator. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

One part is listed for the 2009 Hummer H3 — ACDELCO 15948095.

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

28 Temperature Sender / Sensor parts for the 2009 Hummer H3 come from 17 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, GPD and 14 other brands. The "Popular" part is SKP SKTX89. Economy, Full Service Kit and Standard Replacement are all represented, and Standard Replacement alone accounts for 17 parts.

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

25 Thermostat parts are listed for the 2009 Hummer H3, from MOTORAD, SKP, DORMAN and 7 other brands. SKP SK1511073 carries the "Popular" badge.

Economy: 5 parts, from SKP, DORMAN and AUTOTECNICA. A representative part number is SKP SK1511073.

The Heavy Duty section: 2 options from MOTORAD. MOTORAD 5523187 is listed in this group.

In the Performance grade, MOTORAD supplies 2 parts: engineered beyond original-equipment specification. A representative part number is MOTORAD 2523160.

The Standard Replacement section: 16 options from MOTORAD, GATES, CALORSTAT and 4 other brands. GATES 34198 is listed in this group.

This table covers the seals at the thermostat housing and water outlet. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

13 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2009 Hummer H3 come from 6 brands — FEL-PRO, MAHLE / CLEVITE, VICTOR REINZ and 3 other brands. The "Popular" part is FEL-PRO 35632.

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

9 Thermostat Housing / Water Outlet parts are listed for the 2009 Hummer H3, from DORMAN, GATES, MOTORAD and 3 other brands. DORMAN 9022081 carries the "Popular" badge.

Economy: 3 parts, from DORMAN and GPD. A representative part number is DORMAN 9022081.

The Standard Replacement section: 6 options from GATES, MOTORAD, FOUR SEASONS and 1 other brand. FOUR SEASONS 85945 is listed in this group.

Listed part numbers: DORMAN 9022081, DORMAN 902695 and GPD 8241567, plus the other parts above.

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

This group shows a single part: 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

25 Water Pump parts are listed for the 2009 Hummer H3, from US MOTOR WORKS, FVP, GMB and 10 other brands. US MOTOR WORKS US5097 carries the "Popular" badge.

Economy: 11 parts, from US MOTOR WORKS, FVP, SKP and 3 other brands. A representative part number is US MOTOR WORKS US5097.

The Standard Replacement section: 13 options from GMB, ACDELCO, GATES and 3 other brands. ACDELCO 252901 is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

This table covers the Water Pump & Fan Clutch assemblies. Read more

5 Water Pump & Fan Clutch Assembly parts are listed for the 2009 Hummer H3, from US MOTOR WORKS, FVP and GMB.

Part numbers include FVP 1300018 and US MOTOR WORKS MCK1049, among others listed above.

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

15 Water Pump Gasket parts for the 2009 Hummer H3 come from 8 brands — FEL-PRO, VICTOR REINZ, GM GENUINE and 5 other brands. The "Popular" part is FEL-PRO 35704.

This table covers the Water Pump Seal O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove. Read more

4 Water Pump Seal / O-Ring parts are listed for the 2009 Hummer H3, from APEX, FEL-PRO, MAHLE / CLEVITE and 1 other brand.

Part numbers include APEX AWP3151, FEL-PRO 35633 and MAHLE / CLEVITE K31629, among others listed above.