2018 GMC Sierra 1500 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

7 4WD Actuator parts for the 2018 GMC Sierra 1500 come from 7 brands — GM GENUINE, ULTRA-POWER, AAM and 4 other brands. The "Popular" part is GM GENUINE 22876132. Every part fits all 3 engine options (4.3L V6, 5.3L V8 and 6.2L V8).

Part numbers include GM GENUINE 22876132, ULTRA-POWER 600118 and AAM 40097241, among others listed above.

This table covers the 4WD Actuator Clutch shafts. Read more

2 4WD Actuator Clutch Shaft parts are listed for the 2018 GMC Sierra 1500, from AAM and GM GENUINE. All of them fit every engine offered in the 2018 Sierra 1500.

This group includes AAM 40029249 and GM GENUINE 19121908.

This table covers the 4WD Actuator Clutch sleeves. Read more

One part is listed for the 2018 GMC Sierra 1500 — GM GENUINE 25818427.

This table covers the 4WD Actuator Clutch Sleeve shims. Read more

6 4WD Actuator Clutch Sleeve Shim parts for the 2018 GMC Sierra 1500 come from GM GENUINE. The "Popular" part is GM GENUINE 15522141. Every part fits all 3 engine options (4.3L V6, 5.3L V8 and 6.2L V8).

Listed part numbers: GM GENUINE 15522141, GM GENUINE 15522140 and GM GENUINE 15522142, plus the other parts above.

This table covers the forks a 4WD actuator moves. Read more

This group shows a single part: GM GENUINE 12479213.

This table covers the 4WD Actuator housings. Read more

One part is listed for the 2018 GMC Sierra 1500 — GM GENUINE 84242534.

This table covers the disconnects that freewheel a front axle in two-wheel drive. Read more

One part is listed for the 2018 GMC Sierra 1500 — AAM 40210868.

This table covers the Axle / Differential assemblies. Read more

6 Axle / Differential Assembly parts for the 2018 GMC Sierra 1500 come from GM GENUINE. 1 part fits every engine; the other 5 are engine-specific.

This group includes GM GENUINE 84554713, GM GENUINE 19435909 and GM GENUINE 84447465 and the remaining parts above.

This table covers the Axle housings. Read more

3 Axle Housing parts are listed for the 2018 GMC Sierra 1500, from GM GENUINE and ACDELCO.

This group includes ACDELCO 22951484, GM GENUINE 22876125 and GM GENUINE 22951482.

This table covers the Axle Intermediate 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

3 Axle Intermediate Shaft Bearing parts are listed for the 2018 GMC Sierra 1500, from AAM, SKF and TIMKEN. All of them fit every engine offered in the 2018 Sierra 1500.

This group includes AAM 26041516, SKF BH208 and TIMKEN SCH208.

This table covers the Axle shafts. Read more

13 Axle Shaft parts for the 2018 GMC Sierra 1500 come from 5 brands — USA STANDARD GEAR, GM GENUINE, DORMAN and 2 other brands. The "Popular" part is AAM 40104064. 10 parts fit every engine; the other 3 are engine-specific.

The Economy section lists 3 options from DORMAN and RICHMOND — the catalog's value-priced group. DORMAN 630638 is listed in this group.

In the Standard Replacement grade, USA STANDARD GEAR, GM GENUINE and AAM supply 10 parts: built to original-equipment specification. A representative part number is AAM 40104064.

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

13 Axle Shaft Bearing parts for the 2018 GMC Sierra 1500 come from 8 brands — GM GENUINE, WJB / INMOTION PARTS, BCA and 5 other brands. The "Popular" part is GM GENUINE RW2010. Every part fits all 3 engine options (4.3L V6, 5.3L V8 and 6.2L V8).

The Economy section: 2 options from WJB / INMOTION PARTS. WJB / INMOTION PARTS WRSCH208 is listed in this group.

Standard Replacement: 11 parts, from GM GENUINE, BCA, NATIONAL and 4 other brands. A representative part number is GM GENUINE RW2010.

This table covers the Axle Shaft Housing tubes. Read more

2 Axle Shaft Housing / Tube parts for the 2018 GMC Sierra 1500 come from 2 brands — DORMAN and GM GENUINE. Every part fits all 3 engine options (4.3L V6, 5.3L V8 and 6.2L V8).

Part numbers include DORMAN 630501 and GM GENUINE 22942970.

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

3 Axle Shaft Lock / Snap Ring parts for the 2018 GMC Sierra 1500 come from 2 brands — GM GENUINE and AAM. 2 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: AAM 40023211, GM GENUINE 12479372 and GM GENUINE 26056600.

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

5 Axle Shaft Pilot Bearing parts for the 2018 GMC Sierra 1500 come from 5 brands — GM GENUINE, BCA, SKF and 2 other brands. The "Popular" part is GM GENUINE RW203. Every part fits all 3 engine options (4.3L V6, 5.3L V8 and 6.2L V8).

This group includes GM GENUINE RW203, BCA NBSCH78 and SKF BH78 and the remaining parts above.

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

4 Axle Shaft Retainer / Clip parts are listed for the 2018 GMC Sierra 1500, from GM GENUINE, DORMAN and MOTIVE GEAR. 2 parts fit every engine; the other 2 are engine-specific.

This group includes DORMAN 13851, GM GENUINE 03833322 and GM GENUINE 14012746 and the remaining parts above.

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

13 Axle Shaft Seal parts are listed for the 2018 GMC Sierra 1500, from GM GENUINE, TIMKEN, MOTIVE GEAR and 7 other brands. GM GENUINE 291315 carries the "Popular" badge. 12 parts fit every engine; the other 1 is engine-specific.

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

GM GENUINE supplies both parts for the 2018 GMC Sierra 1500. All of them fit every engine offered in the 2018 Sierra 1500.

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

9 CV Axle parts are listed for the 2018 GMC Sierra 1500, from GSP, TRAKMOTIVE, TOP NOTCH and 1 other brand. TOP NOTCH TN20095 carries the "Popular" badge. 8 parts fit every engine; the other 1 is engine-specific.

The Heavy Duty section lists 3 options from GSP, TOP NOTCH and TRAKMOTIVE — rated for severe service. GSP NCV10143XD is listed in this group.

The Specialty - For Lifted Vehicles section lists 1 option from GSP — grouped under the catalog's "Specialty - For Lifted Vehicles" designation — the notes column spells out what sets them apart. GSP NCV10143XDP is listed in this group.

The Standard Replacement section: 5 options from TRAKMOTIVE, TOP NOTCH, GM GENUINE and 1 other brand. TOP NOTCH TN20095 is listed in this group.

Part numbers include TOP NOTCH TN20095, GSP NCV10143XD and TOP NOTCH TN20095XD, among others listed above.

This table covers the CV Intermediate shafts. Read more

3 CV Intermediate Shaft parts for the 2018 GMC Sierra 1500 come from 2 brands — USA STANDARD GEAR and APWI. Every part fits all 3 engine options (4.3L V6, 5.3L V8 and 6.2L V8).

This group includes APWI GM8495S, USA STANDARD GEAR USA21880 and USA STANDARD GEAR USA21881.

This table covers the constant-velocity joints at each end of a drive axle. Read more

3 CV Joint parts are listed for the 2018 GMC Sierra 1500, from VAICO and GM GENUINE. All of them fit every engine offered in the 2018 Sierra 1500.

Part numbers include GM GENUINE 22928970, VAICO V510521 and VAICO V510523.

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

6 CV Joint Boot parts are listed for the 2018 GMC Sierra 1500, from GM GENUINE and AAM. GM GENUINE 19256071 carries the "Popular" badge. 5 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: GM GENUINE 19256071, GM GENUINE 12471527 and AAM 40215887, plus the other parts above.

This table covers the CV Joint Lock rings. Read more

This group shows a single part: GM GENUINE 07849284.

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

3 Differential Bearing Adjuster parts are listed for the 2018 GMC Sierra 1500, from DORMAN and GM GENUINE. All of them fit every engine offered in the 2018 Sierra 1500.

Part numbers include DORMAN 697041, DORMAN 697042 and GM GENUINE 22934983.

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

2 Differential Bearing Adjuster Nut Lock parts are listed for the 2018 GMC Sierra 1500, from AAM and GM GENUINE. 1 part fits every engine; the other 1 is engine-specific.

Listed part numbers: AAM 40133900 and GM GENUINE 23484390.

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

15 Differential Carrier parts are listed for the 2018 GMC Sierra 1500, from GM GENUINE, AAM, MOTIVE GEAR and 2 other brands. DORMAN 697909 carries the "Popular" badge. 9 parts fit every engine; the other 6 are engine-specific.

Economy: 3 parts, from DORMAN and RICHMOND. A representative part number is DORMAN 697909.

The Standard Replacement section: 12 options from GM GENUINE, AAM and MOTIVE GEAR. AAM 40048044 is listed in this group.

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

17 Differential Carrier Bearing / Race parts are listed for the 2018 GMC Sierra 1500, from WJB / INMOTION PARTS, SCHAEFFLER, BCA and 3 other brands. WJB / INMOTION PARTS WTLM501314 carries the "Popular" badge. 15 parts fit every engine; the other 2 are engine-specific.

Economy: 4 parts, from WJB / INMOTION PARTS. A representative part number is WJB / INMOTION PARTS WTLM501314.

The Standard Replacement section: 13 options from SCHAEFFLER, BCA, GM GENUINE and 2 other brands. ACDELCO LM501349 is listed in this group.

This table covers the Differential Carrier bolts. Read more

2 Differential Carrier Bolt parts for the 2018 GMC Sierra 1500 come from GM GENUINE. Every part fits all 3 engine options (4.3L V6, 5.3L V8 and 6.2L V8).

Part numbers include GM GENUINE 11561577 and GM GENUINE 11519538.

This table covers the Differential Carrier bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

12 Differential Carrier Bushing parts are listed for the 2018 GMC Sierra 1500, from MEVOTECH, MOOG, DORMAN and 2 other brands. DORMAN 523071 carries the "Popular" badge. All of them fit every engine offered in the 2018 Sierra 1500.

This table covers the seals at the Differential Carrier. 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

This group shows a single part: ULTRA-POWER 523071.

This table covers the Differential Carrier shims. Read more

14 Differential Carrier Shim parts for the 2018 GMC Sierra 1500 come from 3 brands — GM GENUINE, MOTIVE GEAR and RICHMOND. The "Popular" part is MOTIVE GEAR SS12. 2 parts fit every engine; the other 12 are engine-specific.