2004 GMC Sierra 1500 Regular Cab Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2004 GMC Sierra 1500 Regular Cab, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 6x139.7 (6x5.5") |
|---|---|
| Lug Nut / Bolt Size | 14x1.5 |
| Center Bore (CB) | 78.1 mm |
| Offset (ET) | 20-30 |
| Torque Specs | 100 ft-lbs (135 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
2004 Sierra 1500 Regular Cab — Year-Specific Fitment Context
The 2004 GMC Sierra 1500 Regular Cab is in year 6 of 26 using the 6x139.7 pattern (1999–2024). Wheels from any 1999–2024 GMC Sierra 1500 Regular Cab are cross-compatible with the 2004 model.
GMC Sierra 1500 Regular Cab Bolt Pattern by Year
The table below shows how the Sierra 1500 Regular Cab's wheel specifications have changed over the years. The 2004 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 1999 | 6x139.7 | 78.1 | 20-30 |
| 2000 | 6x139.7 | 78.1 | 20-30 |
| 2001 | 6x139.7 | 78.1 | 20-30 |
| 2002 | 6x139.7 | 78.1 | 20-30 |
| 2003 | 6x139.7 | 78.1 | 20-30 |
| ▸ 2004 | 6x139.7 | 78.1 | 20-30 |
| 2005 | 6x139.7 | 78.1 | 20-30 |
| 2006 | 6x139.7 | 78.1 | 20-30 |
| 2007 | 6x139.7 | 78.1 | 20-30 |
| 2008 | 6x139.7 | 78.1 | 20-30 |
| 2009 | 6x139.7 | 78.1 | 20-30 |
| 2010 | 6x139.7 | 78.1 | 20-30 |
| 2011 | 6x139.7 | 78.1 | 20-30 |
| 2012 | 6x139.7 | 78.1 | 20-30 |
| 2013 | 6x139.7 | 78.1 | 20-30 |
| 2014 | 6x139.7 | 78.1 | 20-30 |
| 2015 | 6x139.7 | 78.1 | 20-30 |
| 2016 | 6x139.7 | 78.1 | 20-30 |
| 2017 | 6x139.7 | 78.1 | 20-30 |
| 2018 | 6x139.7 | 78.1 | 20-30 |
| 2019 | 6x139.7 | 78.1 | 20-30 |
| 2020 | 6x139.7 | 78.1 | 20-30 |
| 2021 | 6x139.7 | 78.1 | 20-30 |
| 2022 | 6x139.7 | 78.1 | 20-30 |
| 2023 | 6x139.7 | 78.1 | 20-30 |
| 2024 | 6x139.7 | 78.1 | 20-30 |
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 2004 GMC Sierra 1500 Regular Cab
For your 2004 GMC Sierra 1500 Regular Cab, the bolt pattern is 6x139.7mm with a center bore of 78.1mm. When selecting aftermarket wheels, ensure the center bore matches or use hub-centric rings to prevent vibration and ensure proper load distribution. The recommended offset range is 20-30mm; deviating can cause rubbing or clearance issues with suspension and brakes. Always use lug nuts with the correct thread pitch (14x1.5) and seat type—either conical (60-degree) or ball seat—to match the wheel. Improper lug nuts can lead to wheel loosening. Safety first: verify all specifications before installation.
Historical Fitment Data Reference
In our dataset, GMC Sierra 1500 Regular Cab appears from 1999 to 2024 (26 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: 50.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts after 50-100 miles of driving to maintain proper clamping force.
- ✅ Avoid using universal fit wheels without hub-centric rings; they can cause vibrations and stress on wheel studs.
- ✅ Check for brake caliper clearance when using wheels with offset near 20mm, as some aftermarket calipers may interfere.
- ⚠️ This fitment uses a wide offset range. Check brake clearance and fender clearance before buying wheels.
- ⚠️ Torque lugs in a star pattern to 100 ft-lbs (135 Nm), then re-check torque after 50-100 km (30-60 miles).
Ready to upgrade or perform maintenance?
🛒 Shop Tools & Accessories on AmazonAs an Amazon Associate, I earn from qualifying purchases.
2004 GMC Sierra 1500 Regular Cab — Frequently Asked Questions
What is the bolt pattern for a 2004 GMC Sierra 1500 Regular Cab?
The 2004 GMC Sierra 1500 Regular Cab uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 78.1mm and the offset is 20-30mm.
What other years of GMC Sierra 1500 Regular Cab have the same bolt pattern as the 2004?
The GMC Sierra 1500 Regular Cab uses the 6x139.7 pattern from 1999 through 2024. Wheels from any of these model years are dimensionally compatible with the 2004, provided the offset and center bore also match.
How do I measure the bolt pattern on my 2004 GMC?
The 2004 Sierra 1500 Regular Cab uses a 6x139.7 pattern. For 4, 6, or 8-lug wheels, measure center-to-center across opposite holes. For 5-lug, measure from the center of one hole to the back of the opposite hole.
What lug nut size does the 2004 GMC Sierra 1500 Regular Cab use?
The 2004 GMC Sierra 1500 Regular Cab uses 14x1.5 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
Will wheels from another GMC fit my 2004 Sierra 1500 Regular Cab?
Only if they share the exact same 6x139.7 bolt pattern, a compatible offset, and a center bore equal to or larger than 78.1mm.
Can I use spacers on my 2004 GMC Sierra 1500 Regular Cab?
Yes, but ensure the wheel spacers match the 6x139.7 bolt pattern and 78.1mm center bore. Also verify that you have enough thread engagement for your 14x1.5 hardware.
Need more vehicle fitment data?
Access our complete, raw JSON/CSV database of over 11,000+ vehicles for your next app or project.
Get the Full Dataset