2003 Hummer H2 Drivetrain Parts

This table covers the actuators that engage four-wheel drive at the transfer case or axle. Typical signs include a door or range that will not move, or a click with no motion. Confirm the command signal before replacing the actuator — a failed module looks the same. Read more

One part is listed for the 2003 Hummer H2 — USA STANDARD GEAR ZTSM26060073.

This table covers the Axle Shaft bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

12 Axle Shaft Bearing parts are listed for the 2003 Hummer H2, from BCA, WJB / INMOTION PARTS, NATIONAL and 4 other brands. WJB / INMOTION PARTS WRSCH208 carries the "Popular" badge.

In the Economy grade, WJB / INMOTION PARTS supplies 2 parts: the catalog's value-priced group. A representative part number is WJB / INMOTION PARTS WRSCH208.

The Standard Replacement section lists 10 options from BCA, NATIONAL, USA STANDARD GEAR and 3 other brands — built to original-equipment specification. NATIONAL SCH208 is listed in this group.

This table covers the Axle Shaft Lock / Snap rings. Read more

3 Axle Shaft Lock / Snap Ring parts are listed for the 2003 Hummer H2, from USA STANDARD GEAR and GM GENUINE.

Listed part numbers: GM GENUINE 25931953, USA STANDARD GEAR USA33368 and USA STANDARD GEAR USA33371.

This table covers the Axle Shaft Pilot bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly. Read more

3 Axle Shaft Pilot Bearing parts are listed for the 2003 Hummer H2, from BCA, GM GENUINE and WJB / INMOTION PARTS.

Part numbers include BCA NBSCH78, GM GENUINE FD100 and WJB / INMOTION PARTS WRSCH78.

This table covers the Axle Shaft retainers and clips. Read more

2 Axle Shaft Retainer / Clip parts for the 2003 Hummer H2 come from 2 brands — DORMAN and GM GENUINE.

Listed part numbers: DORMAN 13851 and GM GENUINE 14012746.

This table covers the seals where an axle shaft exits the housing. 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

12 Axle Shaft Seal parts for the 2003 Hummer H2 come from 9 brands — GM GENUINE, SCHAEFFLER, USA STANDARD GEAR and 6 other brands. The "Popular" part is ACDELCO 710648.

This table covers the Axle Vent valves. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one. Read more

2 Axle Vent Valve parts for the 2003 Hummer H2 come from GM GENUINE.

Part numbers include GM GENUINE 12471619 and GM GENUINE 26063647.

This table covers the complete CV axle shafts from differential (or hub) to wheel. Typical signs include a click in tight turns, grease flung around the wheel well, or a vibration that builds with speed. A torn boot caught early is a boot kit; caught late it is the whole axle. Torque the axle nut to the method in the notes. Read more

3 CV Axle parts for the 2003 Hummer H2 come from 3 brands — APWI, GM GENUINE and TRAKMOTIVE.

Listed part numbers: APWI GM8105, GM GENUINE 85775028 and TRAKMOTIVE GM8026.

This table covers the boots that keep grease in a CV joint. Typical signs include a split boot, grease flung around the joint, or a click once grit is inside. A boot caught early is a kit. Once the joint has clicked, the joint itself is usually worn. Read more

4 CV Joint Boot parts for the 2003 Hummer H2 come from 2 brands — GM GENUINE and MEVOTECH.

This group includes GM GENUINE 12471527, GM GENUINE 15868188 and MEVOTECH DX530 and the remaining parts above.

This table covers the bands that clamp a CV boot to the joint. Read more

One part is listed for the 2003 Hummer H2 — GM GENUINE 07849175.

This table covers the CV Joint Lock rings. Read more

One part is listed for the 2003 Hummer H2 — GM GENUINE 26056802.

This table covers the adjusters that set differential bearing preload. Read more

4 Differential Bearing Adjuster parts for the 2003 Hummer H2 come from 2 brands — USA STANDARD GEAR and GM GENUINE.

Listed part numbers: GM GENUINE 26045211, USA STANDARD GEAR USA33360 and USA STANDARD GEAR USA33354, plus the other parts above.

This table covers the Differential Bearing Adjuster Nut locks. Read more

This group shows a single part: GM GENUINE 26008812.

This table covers the Differential Bearing Adjuster Nut Lock bolts. Read more

One part is listed for the 2003 Hummer H2 — USA STANDARD GEAR USA33244.

This table covers the carriers that hold the differential gears in the axle. Read more

5 Differential Carrier parts for the 2003 Hummer H2 come from 4 brands — USA STANDARD GEAR, RICHMOND, DANA and 1 other brand. The "Popular" part is DANA 10019420.

The Economy section: 1 option from RICHMOND. RICHMOND XL5055 is listed in this group.

In the Heavy Duty grade, USA STANDARD GEAR supplies 1 part: rated for severe service. A representative part number is USA STANDARD GEAR USA26025.

Standard Replacement: 3 parts, from DANA, MOTIVE GEAR and USA STANDARD GEAR. A representative part number is DANA 10019420.

Part numbers include DANA 10019420, RICHMOND XL5055 and USA STANDARD GEAR USA26025, among others listed above.

This table covers the bearings and races that support the differential carrier. Read more

16 Differential Carrier Bearing / Race parts for the 2003 Hummer H2 come from 9 brands — WJB / INMOTION PARTS, BCA, SKF and 6 other brands. The "Popular" part is WJB / INMOTION PARTS WTLM501314.

The Economy section: 3 options from WJB / INMOTION PARTS. WJB / INMOTION PARTS WTLM501314 is listed in this group.

Standard Replacement: 13 parts, from BCA, SKF, SCHAEFFLER and 5 other brands. A representative part number is ACDELCO LM501349.

This table covers the Differential Carrier shims. Read more

4 Differential Carrier Shim parts are listed for the 2003 Hummer H2, from MOTIVE GEAR and USA STANDARD GEAR.

Listed part numbers: MOTIVE GEAR GM95MSK, MOTIVE GEAR GM95SSK and USA STANDARD GEAR USA55003, plus the other parts above.

This table covers the clutch packs in a limited-slip or locking differential. Read more

This group shows a single part: USA STANDARD GEAR USA16058.

This table covers the Differential covers. Read more

USA STANDARD GEAR supplies both parts for the 2003 Hummer H2.

Part numbers include USA STANDARD GEAR USA32018 and USA STANDARD GEAR USA32333.

This table covers the Differential Cover bolts. Read more

5 Differential Cover Bolt parts for the 2003 Hummer H2 come from 3 brands — USA STANDARD GEAR, AAM and GM GENUINE. The "Popular" part is USA STANDARD GEAR USA33572.

This group includes USA STANDARD GEAR USA33572, AAM 4000216910 and AAM 40002169 and the remaining parts above.

This table covers the gaskets that seal the Differential Cover. 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

7 Differential Cover Gasket parts for the 2003 Hummer H2 come from 5 brands — VICTOR REINZ, USA STANDARD GEAR, FEL-PRO and 2 other brands. The "Popular" part is FEL-PRO RDS55387.

Part numbers include FEL-PRO RDS55387, VICTOR REINZ 711483400 and MAHLE / CLEVITE P33285, among others listed above.

This table covers the Differential Cover plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes. Read more

One part is listed for the 2003 Hummer H2 — GM GENUINE 12479391.

This table covers the Differential Cross pins. Read more

4 Differential Cross Pin parts are listed for the 2003 Hummer H2, from USA STANDARD GEAR, GM GENUINE and MOTIVE GEAR.

This group includes GM GENUINE 14012700 and USA STANDARD GEAR USA33402 and the remaining parts above.

This table covers the Differential Crush sleeves. Read more

3 Differential Crush Sleeve parts are listed for the 2003 Hummer H2, from AAM, MOTIVE GEAR and USA STANDARD GEAR.

Listed part numbers: AAM 14012691 and USA STANDARD GEAR USA33099, plus the other parts above.

This table covers the Differential Fill drain plugs. Read more

2 Differential Fill / Drain Plug parts for the 2003 Hummer H2 come from 2 brands — AAM and GM GENUINE.

Listed part numbers: AAM 40007601 and GM GENUINE 92230583.

This table covers the Differential Gear Installation kits. Read more

4 Differential Gear Installation Kit parts are listed for the 2003 Hummer H2, from MOTIVE GEAR and USA STANDARD GEAR.

Listed part numbers: MOTIVE GEAR GM92IKFL, MOTIVE GEAR GM95IKL and USA STANDARD GEAR USA12060, plus the other parts above.

This table covers the Differential housings. Read more

One part is listed for the 2003 Hummer H2 — GM GENUINE GM88963599.

This table covers the bearings and races on the differential pinion. Read more

42 Differential Pinion Bearing / Race parts are listed for the 2003 Hummer H2, from BCA, WJB / INMOTION PARTS, NATIONAL and 7 other brands. WJB / INMOTION PARTS WTM88048 carries the "Popular" badge. They are grouped as Economy and Standard Replacement, with Standard Replacement the largest group at 28 parts from BCA, NATIONAL, SCHAEFFLER and 4 other brands.

This table covers the baffles that control oil at the pinion bearings. Read more

One part is listed for the 2003 Hummer H2 — GM GENUINE 14012691.

This table covers the flanges that connect the driveshaft to the differential pinion. Read more

3 Differential Pinion Flange parts for the 2003 Hummer H2 come from AAM.

This group includes AAM 26060881, AAM 40055350 and AAM 40177786.

This table covers the Differential Pinion nuts. Read more

4 Differential Pinion Nut parts for the 2003 Hummer H2 come from 3 brands — GM GENUINE, MOTIVE GEAR and USA STANDARD GEAR.

This group includes GM GENUINE 09783762, GM GENUINE 88891763 and MOTIVE GEAR 1260823 and the remaining parts above.

This table covers the wear sleeves used to restore a grooved pinion seal surface. Read more

5 Differential Pinion Repair Sleeve parts for the 2003 Hummer H2 come from 4 brands — USA STANDARD GEAR, WJB / INMOTION PARTS, AAM and 1 other brand. The "Popular" part is WJB / INMOTION PARTS WS99193.

Listed part numbers: WJB / INMOTION PARTS WS99193, AAM 26060975 and SKF 99193, plus the other parts above.

This table covers the seals at the differential pinion yoke. 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

15 Differential Pinion Seal parts for the 2003 Hummer H2 come from 9 brands — GM GENUINE, BCA, SCHAEFFLER and 6 other brands. The "Popular" part is ACDELCO 710536.

This table covers the Differential Pinion Shaft Lock bolts. Read more

3 Differential Pinion Shaft Lock Bolt parts are listed for the 2003 Hummer H2, from GM GENUINE, MOTIVE GEAR and USA STANDARD GEAR.

This group includes GM GENUINE 14012702, MOTIVE GEAR 12337979 and USA STANDARD GEAR USA33342.

This table covers the Differential Pinion shims. Read more

2 Differential Pinion Shim parts for the 2003 Hummer H2 come from 2 brands — MOTIVE GEAR and USA STANDARD GEAR.

Listed part numbers: MOTIVE GEAR 1102 and USA STANDARD GEAR USA55059.

This table covers kits that group the bearings, races and seals for a differential rebuild. Read more

29 Differential Rebuild Kit parts are listed for the 2003 Hummer H2, from USA STANDARD GEAR, MOTIVE GEAR, SKF and 7 other brands. RICHMOND XL20061 carries the "Popular" badge. Master Kit and Standard Kit are all represented, and Standard Kit alone accounts for 17 parts.