2001 Chevrolet Silverado 1500 Extended Cab Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2001 Chevrolet Silverado 1500 Extended Cab, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 6x139.7 (6x5.5") |
|---|---|
| Lug Nut / Bolt Size | N 14x1.50 |
| Center Bore (CB) | 78.1 mm |
| Offset (ET) | 16 |
| Torque Specs | 100 ft-lbs (135 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
2001 Silverado 1500 Extended Cab — Year-Specific Fitment Context
The 2001 Chevrolet Silverado 1500 Extended Cab is in year 3 of 15 using the 6x139.7 pattern (1999–2013). Wheels from any 1999–2013 Chevrolet Silverado 1500 Extended Cab are cross-compatible with the 2001 model.
Chevrolet Silverado 1500 Extended Cab Bolt Pattern by Year
The table below shows how the Silverado 1500 Extended Cab's wheel specifications have changed over the years. The 2001 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 1999 | 6x139.7 | 78.1 | 16 |
| 2000 | 6x139.7 | 78.1 | 16 |
| ▸ 2001 | 6x139.7 | 78.1 | 16 |
| 2002 | 6x139.7 | 78.1 | 16 |
| 2003 | 6x139.7 | 78.1 | 16 |
| 2004 | 6x139.7 | 78.1 | 16 |
| 2005 | 6x139.7 | 78.1 | 16 |
| 2006 | 6x139.7 | 78.1 | 16 |
| 2007 | 6x139.7 | 78.1 | 16 |
| 2008 | 6x139.7 | 78.1 | 16 |
| 2009 | 6x139.7 | 78.1 | 26 |
| 2010 | 6x139.7 | 78.1 | 26 |
| 2011 | 6x139.7 | 78.1 | 26 |
| 2012 | 6x139.7 | 78.1 | 26 |
| 2013 | 6x139.7 | 78.1 | 26 |
6x139.7 Pattern Context
This bolt pattern appears on 1067 vehicles in our current database and is considered common.
Examples of other vehicles using 6x139.7:
Expert Buying Guide for 2001 Chevrolet Silverado 1500 Extended Cab
For your 2001 Chevrolet Silverado 1500 Extended Cab, the 6x139.7 bolt pattern and 78.1mm center bore are critical. Aftermarket wheels often have a larger bore (e.g., 78.3mm or 80mm), requiring hub-centric rings to prevent vibration and ensure load is on the hub, not the lug nuts. The offset range is sensitive; stock is around +16mm. Going too low (negative offset) can cause rubbing and bearing stress. Always use lug nuts with the correct thread pitch (14x1.50) and seat type—factory uses cone seat. Never mix seat types; improper seating can lead to wheel loss. Re-torque after 50-100 miles.
Historical Fitment Data Reference
In our dataset, Chevrolet Silverado 1500 Extended Cab appears from 1999 to 2013 (15 model years). Across recorded model years, this model generally keeps the same bolt pattern.
- Observed bolt-pattern variants for this model: 1
- Observed center-bore variants for this model: 1
- Observed lug-size variants for this model: 1
- Observed total offset span across years: 10.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts to 140 ft-lb after 50-100 miles of driving.
- ✅ Avoid wheels with offset below +10mm to prevent rubbing on control arms or fenders.
- ✅ Use only 14x1.50 cone seat lug nuts; ball seat or shank nuts are unsafe.
- ⚠️ Torque lugs in a star pattern to 100 ft-lbs (135 Nm), then re-check torque after 50-100 km (30-60 miles).
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2001 Chevrolet Silverado 1500 Extended Cab — Frequently Asked Questions
What is the bolt pattern for a 2001 Chevrolet Silverado 1500 Extended Cab?
The 2001 Chevrolet Silverado 1500 Extended Cab uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 78.1mm and the offset is 16mm.
What other years of Chevrolet Silverado 1500 Extended Cab have the same bolt pattern as the 2001?
The Chevrolet Silverado 1500 Extended Cab uses the 6x139.7 pattern from 1999 through 2013. Wheels from any of these model years are dimensionally compatible with the 2001, provided the offset and center bore also match.
What is the center bore of a 2001 Chevrolet Silverado 1500 Extended Cab?
The factory center bore (hub bore) for the 2001 Chevrolet Silverado 1500 Extended Cab is 78.1mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
What lug nut size does the 2001 Chevrolet Silverado 1500 Extended Cab use?
The 2001 Chevrolet Silverado 1500 Extended Cab uses N 14x1.50 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
Do 2001 Chevrolet Silverado 1500 Extended Cabs use lug bolts or lug nuts?
The 2001 Silverado 1500 Extended Cab requires N 14x1.50 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
How tight should I torque the lug nuts on a 2001 Chevrolet Silverado 1500 Extended Cab?
Refer to your owner's manual for exact specs, but always tighten the N 14x1.50 hardware in a star or crisscross pattern. Re-torque after the first 50 miles of driving.
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