GMC Sierra 3500 Automatic & manual transmission bearing reference
Look up 26 BCA catalogue entries for GMC Sierra 3500 — Automatic & manual transmission. Compare full part references, component roles and recorded restrictions; confirm current vehicle-specific requirements before use.
Filter by vehicle and component
What this lookup establishes—and what it does not
Source: BCA 2021 Wheel Hub Assembly, Bearing and Seal Catalog. The loaded entries cover listed model years from 1995 through 2020. This is a historical catalogue reference, not a live VIN decoder or a guarantee for every trim, market or production date.
BCA is an NTN-owned product line. The numbers below remain BCA part references; they are not silently converted into NTN, SKF or another brand's part numbers. Confirm current OEM/service requirements before use.
Which bearing or hub reference applies?
The catalogue contains 26 reference entries for GMC Sierra 3500 in Automatic & manual transmission. Select the year and component, then read the full condition and footnote fields. There is no single universal bearing number for every support in this vehicle.
Reference records
1–25 of 26“Bearing”, “hub assembly”, “seal” and “repair sleeve” describe different components. The source description, rather than the catalogue title, determines the role of each number.
On a phone, each record is shown as a complete card with its restrictions. These records do not supply tightening torques or certify a replacement.
| BCA part reference | Component / position | Source model years | Recorded conditions & restrictions | Source trace |
|---|---|---|---|---|
| NS2457BCA catalogue reference | Automatic Transmission | 2001–2006Subject to the conditions in this row | Extension Housing Seal - 4L80-E Trans.; Automatic Trans.; 4 Speed Trans
| 2021 catalogue Page 260Entry 8005f328 |
| NS4333NBCA catalogue reference | Automatic Transmission | 2001–2006Subject to the conditions in this row | Extension Housing Seal - 4L80-E Trans.; Automatic Trans.; 4 Speed Trans
| 2021 catalogue Page 260Entry 90cffb09 |
| NS710623BCA catalogue reference | Automatic Transmission | 2001–2003Subject to the conditions in this row | Oil Pump Seal - Front - 1000/M74 Trans.; Automatic Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 259Entry c50cf130 |
| NS710623BCA catalogue reference | Automatic Transmission | 2004–2006Subject to the conditions in this row | Oil Pump Seal - Front - 1000 Trans.; Automatic Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 260Entry 5bbc4ea9 |
| NS8792SBCA catalogue reference | Automatic Transmission | 2001–2003Subject to the conditions in this row | Shift Shaft Seal - 1000/M74 Trans.; Automatic Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 259Entry e8a99f6f |
| NS9449BCA catalogue reference | Automatic Transmission | 2001–2003Subject to the conditions in this row | Extension Housing Seal - 4L80-E Trans.; Automatic Trans.; 4 Speed Trans
| 2021 catalogue Page 259Entry eb23ce40 |
| NB2520BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Countershaft Race - S6-650/ML6 Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 287Entry dd276c9b |
| NB2520BCA catalogue reference | Manual Transmission | 2004–2006Subject to the conditions in this row | Countershaft Race - S6-650 Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 288Entry 1e6b9be2 |
| NB2580BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Countershaft Bearing - S6-650/ML6 Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 287Entry 2b759d26 |
| NB2580BCA catalogue reference | Manual Transmission | 2004–2006Subject to the conditions in this row | Countershaft Bearing - S6-650 Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 288Entry 4846d965 |
| NB28521BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Input Shaft Race - S6-650/ML6 Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 287Entry 023725dc |
| NB28521BCA catalogue reference | Manual Transmission | 2004–2006Subject to the conditions in this row | Input Shaft Race - S6-650 Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 288Entry 97cb029c |
| NB28580BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Input Shaft Bearing - S6-650/ML6 Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 287Entry 2292eec8 |
| NB28580BCA catalogue reference | Manual Transmission | 2004–2006Subject to the conditions in this row | Input Shaft Bearing - S6-650 Trans.; Manual Trans.; 6 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 288Entry abe2494b |
| NBA35BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Countershaft Bearing - Rear - NV4500/MW3 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 287Entry d2bf0d38 |
| NBA35BCA catalogue reference | Manual Transmission | 2004–2006Subject to the conditions in this row | Countershaft Bearing - Rear - NV4500 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 288Entry 79f3f2b8 |
| NBB5020BCA catalogue reference | Manual Transmission | 2001–2006Subject to the conditions in this row | Extension Housing Bearing - RWD; Manual Trans.; 5 Speed Trans
| 2021 catalogue Page 287Entry c944bfe9 |
| NBLM102910BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Countershaft Race - Front - NV4500/MW3 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 287Entry d5ade82f |
| NBLM102910BCA catalogue reference | Manual Transmission | 2004–2006Subject to the conditions in this row | Countershaft Race - Front - NV4500 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 288Entry 4f5f6bc7 |
| NBLM102949BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Countershaft Bearing - Front - NV4500/MW3 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 287Entry ca46e110 |
| NBLM102949BCA catalogue reference | Manual Transmission | 2004–2006Subject to the conditions in this row | Countershaft Bearing - Front - NV4500 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 288Entry 69788cd5 |
| NBM804010BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Output Shaft Race - NV4500/MW3 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 287Entry 5221ee94 |
| NBM804010BCA catalogue reference | Manual Transmission | 2004–2006Subject to the conditions in this row | Output Shaft Race - NV4500 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 288Entry 42e4338c |
| NBM804049BCA catalogue reference | Manual Transmission | 2001–2003Subject to the conditions in this row | Output Shaft Bearing - NV4500/MW3 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 287Entry 0cf365a8 |
| NBM804049BCA catalogue reference | Manual Transmission | 2004–2006Subject to the conditions in this row | Output Shaft Bearing - NV4500 Trans.; Manual Trans.; 5 Speed TransNo additional numbered footnote is attached to this source row. | 2021 catalogue Page 288Entry b6923eed |
Checks before treating a reference as a replacement
Identify the complete vehicle
Match model year, engine, transmission, driven axle, body and production/VIN limits. A year and model name alone may leave several valid-looking entries.
Match the component role
Distinguish a loose bearing, complete hub, cup/cone, seal and repair sleeve. Check front/rear and inner/outer or left/right position exactly as recorded.
Preserve vehicle-specific interfaces
Confirm encoder/ABS arrangement, flange and spline interfaces, retention and the current service procedure. Do not transfer torque or installation force from an unrelated part.
How to use these results
Does a listed number guarantee fitment for my VIN?
No. These are source-listed catalogue references. Read every restriction and verify the current OEM and manufacturer information for the exact vehicle configuration. Missing VIN or production details remain unknown.
Can I replace a hub using a bearing with the same dimensions?
Not on dimensions alone. The complete assembly, encoder, retention, loading and installation interfaces must agree. The main bearing catalogue and cross-brand comparisons are separate dimensional references, not vehicle approvals.
Where are the axle-nut torque and installation instructions?
This application catalogue does not establish a universal torque or a complete installation sequence. Use the current vehicle-specific service procedure, including fastener reuse rules and staged tightening. Do not infer torque from the bearing number.
Does wheel noise prove that one of these parts has failed?
No. Bearing damage, tyres, brakes and driveline faults can produce overlapping symptoms. A reference lookup identifies candidates; it does not diagnose the cause or prove which side has failed.
Look up an exact source part number
Keep the BCA prefix and full marking. Similar numbers from other manufacturers are not automatically cross-references.
Continue the technical investigation
Source and interpretation limits
Factual reference basis: BCA 2021 Wheel Hub Assembly, Bearing and Seal Catalog, published by BCA Bearings, an NTN product line, with its linked numbered footnote reference. Each row retains its source page and restrictions. Vehicle names shared by one source entry remain associated with that entry; source counts are not quantities for sale.
BearingScope provides independently organized technical lookup and interpretation. It does not sell these parts, provide a repair service, certify current fitment, or claim that an absent result is unavailable from a manufacturer. Original public catalogue files and source fingerprints are retained in the site's verification records.