2008 Hummer H2 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 2008 Hummer H2 come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 other brands. The "Popular" part is FVP MV5050GAL.

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 2008 Hummer H2 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 2008 Hummer H2 — GM GENUINE 12602048.

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

This group shows a single part: ACDELCO 20192S.

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

One part is listed for the 2008 Hummer H2 — ELRING 868630.

This table covers the Coolant Hose Connector flanges. Read more

This group shows a single part: GM GENUINE 1510595.

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

This group shows a single part: GM GENUINE 15041309.

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

6 Coolant Reservoir parts are listed for the 2008 Hummer H2, from AUTOTECNICA, DORMAN, GPD and 3 other brands. AUTOTECNICA GM0713009 carries the "Popular" badge.

This group includes AUTOTECNICA GM0713009, DORMAN 603102 and GPD 2411022 and the remaining parts above.

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

3 Coolant Reservoir Cap parts are listed for the 2008 Hummer H2, from AUTOTECNICA, CALORSTAT and MOTORAD.

This group includes AUTOTECNICA GM0613020, CALORSTAT RC0147 and MOTORAD T46.

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

3 Coolant Water Crossover Mounting Set parts for the 2008 Hummer H2 come from 3 brands — FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ.

This group includes 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 2008 Hummer H2.

Listed part numbers: 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 2008 Hummer H2 come from 2 brands — GATES and MOTORAD.

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

This table covers the Hose clamps. Read more

This group shows a single part: GM GENUINE 11570393.

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

17 Radiator parts for the 2008 Hummer H2 come from 10 brands — OSC, LILAND GLOBAL, SPECTRA PREMIUM and 7 other brands. The "Popular" part is OSC 2423E.

The Economy section: 3 options from OSC and GPD. OSC 2423E is listed in this group.

The Premium (All Aluminum Construction) section lists 2 options from LILAND GLOBAL — a step above OE specification in materials, tolerances or warranty terms. LILAND GLOBAL 2370AA is listed in this group.

Standard Replacement: 12 parts, from OSC, SPECTRA PREMIUM, FVP and 5 other brands. A representative part number is DENSO 2219514.

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

2 Radiator Cap parts for the 2008 Hummer H2 come from 2 brands — ACDELCO and GATES.

This group includes ACDELCO RC98 and GATES 31532.

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

6 Radiator Fan Assembly parts are listed for the 2008 Hummer H2, from GPD, FOUR SEASONS, TYC and 3 other brands. FOUR SEASONS 76016 carries the "Popular" badge.

Economy: 1 part, from GPD. A representative part number is GPD 2811668.

The Standard Replacement section: 5 options from FOUR SEASONS, TYC, AGILITY and 2 other brands. FOUR SEASONS 76016 is listed in this group.

Listed part numbers: FOUR SEASONS 76016, GPD 2811668 and TYC 622210, plus the other parts above.

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

GM GENUINE supplies both parts for the 2008 Hummer H2.

This group includes GM GENUINE 1580882 and GM GENUINE 1580883.

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

4 Radiator Fan Motor parts for the 2008 Hummer H2 come from 2 brands — GM GENUINE and VEMO.

Part numbers include GM GENUINE 1580880, GM GENUINE 1580881 and VEMO V57010009, among others listed above.

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

6 Radiator Hose parts are listed for the 2008 Hummer H2, from ACDELCO, GATES and CONTINENTAL. ACDELCO 22635M carries the "Popular" badge.

This group includes ACDELCO 22635M, GATES 23438 and ACDELCO 26626X and the remaining parts above.

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

19 Temperature Sender / Sensor parts for the 2008 Hummer H2 come from 17 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, SKP and 14 other brands. The "Popular" part is SKP SKTX89.

The Economy section: 6 options from SKP, DORMAN, GPD and 3 other brands. SKP SKTX89 is listed in this group.

The Full Service Kit section lists 1 option from WALKER PRODUCTS — grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. WALKER PRODUCTS 21191118 is listed in this group.

Standard Replacement: 12 parts, from ACDELCO, GM GENUINE, STANDARD MOTOR PRODUCTS and 9 other brands. A representative part number is ACDELCO 2134514.

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

18 Thermostat parts are listed for the 2008 Hummer H2, from MOTORAD, CALORSTAT, AUTOTECNICA and 6 other brands. GATES 34198 carries the "Popular" badge.

Economy: 3 parts, from AUTOTECNICA, DORMAN and SKP. A representative part number is AUTOTECNICA GM0718523.

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: 11 options from MOTORAD, CALORSTAT, GATES and 3 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

6 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2008 Hummer H2 come from 5 brands — FEL-PRO, APEX, ELRING and 2 other brands. The "Popular" part is APEX AWO2229.

Listed part numbers: APEX AWO2229, FEL-PRO 35720 and ELRING 782380, plus the other parts above.

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

5 Thermostat Housing / Water Outlet parts are listed for the 2008 Hummer H2, from DORMAN, GPD, FOUR SEASONS and 2 other brands. DORMAN 9022081 carries the "Popular" badge.

Economy: 2 parts, from DORMAN and GPD. A representative part number is DORMAN 9022081.

The Standard Replacement section: 3 options from FOUR SEASONS, GATES and MOTORAD. FOUR SEASONS 85945 is listed in this group.

Part numbers include DORMAN 9022081, GPD 8241567 and FOUR SEASONS 85945, among others listed 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

14 Water Pump parts are listed for the 2008 Hummer H2, from US MOTOR WORKS, FVP, MELLING and 8 other brands. US MOTOR WORKS US6009 carries the "Popular" badge.

Economy: 6 parts, from US MOTOR WORKS, FVP, BECK/ARNLEY and 1 other brand. A representative part number is US MOTOR WORKS US6009.

The Standard Replacement section: 7 options from MELLING, ACDELCO, AISIN and 3 other brands. MELLING MWP501WT is listed in this group.

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

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

10 Water Pump Gasket parts for the 2008 Hummer H2 come from 8 brands — FEL-PRO, VICTOR REINZ, GM GENUINE and 5 other brands. The "Popular" part is FEL-PRO ES73010.

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 2008 Hummer H2, from APEX, FEL-PRO, MAHLE / CLEVITE and 1 other brand.

This group includes APEX AWP3151, FEL-PRO 35633 and MAHLE / CLEVITE K31629 and the remaining parts above.