Table of Contents
- Why Billet Aluminum Beats Plastic on the GMT400 Platform
-
OBS Chevy Interior Billet Upgrades: Full Parts List with Prices
- 1. Billet Interior Door Handles, $198
- 2. Billet Door Lock Slides, $115
- 3. Billet Seat Levers (3-Piece Set), $100
- 4. Billet Parking Brake Release Handle, $75
- 5. Billet Climate Control Knobs, $70
- 6. Billet Grab Handle (A-Pillar/Roof), $70
- 7. Billet Shift Lever, $70
- 8. Billet Glove Box Button, $65
- 9. Billet Column Tilt Lever, $35
- 10. Billet Headlight Knob, $30
- GMT400 Compatibility Matrix: Which Parts Fit Which Years
- How to Install Billet Parts on OBS Chevy: Difficulty Ratings and Tips
- Best Billet Parts for OBS Chevy: Finish and Material Grade Comparison
- Maintaining Billet Aluminum Truck Parts for Long-Term Finish
- Conclusion
Last Updated: August 17, 2026
The GMT400 platform is one of the most popular classic truck platforms in the country, and the aftermarket has finally caught up to what these trucks deserve. At LG Billet USA, we've spent years engineering precision billet aluminum replacements for every brittle plastic component the factory left behind. This guide covers the best billet parts for OBS Chevy trucks, organized by price, installation difficulty, and long-term value.
The real transformation happens when you replace the entire interior touchpoint set at once. Below, we'll walk through every interior billet upgrade available for the 1995-1999 GMT400 platform, a compatibility matrix for fitment questions, installation difficulty ratings, and a finish maintenance guide.
Why Billet Aluminum Beats Plastic on the GMT400 Platform
The factory plastic components on the GMT400 platform were never built to last 30 years. Chevy and GMC used injection-molded plastic for nearly every interior touchpoint, door handles, seat levers, climate knobs, the parking brake release, and that plastic has been cracking, fading, and breaking ever since.
Billet aluminum is a solid-machined metal component, typically cut from a block of 6061-T6 aluminum alloy, that replaces factory plastic with a dimensionally precise, corrosion-resistant alternative. The 6061-T6 designation refers to a specific temper treatment that significantly increases tensile strength, making it appropriate for high-contact components like door handles and seat levers.
Here's what separates a proper billet upgrade from a cheap knockoff:
- Material: True 6061-T6 billet aluminum, not pot metal or plastic with a coating
- Machining: CNC machined from solid stock, not cast or stamped
- Fitment: CAD-modeled to OEM dimensions for direct bolt-on installation
- Finish options: Machined raw or black anodized for a factory-plus look
The oxidation resistance of properly anodized or sealed billet aluminum far exceeds what any plastic component offers. Plastic UV-degrades and becomes brittle. Aluminum, properly maintained, outlasts the truck.
According to the Aluminum Association's technical resources on 6061 alloy properties, 6061-T6 aluminum offers tensile strength that makes it one of the most widely used structural alloys in precision-machined aftermarket components.
OBS Chevy Interior Billet Upgrades: Full Parts List with Prices
The following ten parts represent the complete interior billet upgrade catalog for 1995-1999 Chevy/GMC OBS pickups and SUVs. Every part is machined, assembled, and packaged in the USA from 6061-T6 billet aluminum, available in machined raw or black anodized finish.
1. Billet Interior Door Handles, $198
The single most impactful interior upgrade. The factory plastic door handles on 1995-1999 C/K trucks are notorious for snapping at the mounting point. The LG Billet USA Billet Interior Door Handles are constructed from T6-6061 aluminum and CNC machined for precision fit. Installation requires drilling out one fastening rivet per handle, a 15-20 minute job. Fitment covers 1992-1999 C1500, C2500, K1500, K2500 Suburban, Tahoe, and standard/extended cab pickups.
2. Billet Door Lock Slides, $115
The factory door lock slides are thin plastic tabs that flex, crack, and eventually stop actuating cleanly. The LG Billet USA Billet Door Lock Slides are CNC machined T6-6061 aluminum replacements that provide solid, rattle-free lock actuation. Fitment: 1995-1999 Chevy/GMC C/K1500 directly. Two finish options: machined raw or anodized black.
3. Billet Seat Levers (3-Piece Set), $100
Most OBS trucks found today are missing their seat levers entirely. The LG Billet USA Billet Seat Lever Set covers all three positions: driver side, passenger side, and passenger entry (extended cab trucks). Each lever is CNC machined from 6061-T6 with finger grooves for ergonomic grip. Only a Phillips screwdriver is required.
4. Billet Parking Brake Release Handle, $75
The factory e-brake release handle is a thin plastic lever that cracks under normal use. The LG Billet USA Billet Parking Brake Release Handle replaces it with solid T6-6061 aluminum that bolts directly to the latch cable mechanism. Fitment covers 1995-1999 C1500/K1500/C2500/K2500 Suburban, 1995-2000 C2500/C3500/K2500/K3500, 1995-2002 3500HD, 1995-2000 Yukon/Tahoe, and 1999-2000 Cadillac Escalade.
5. Billet Climate Control Knobs, $70
The factory HVAC knobs are plastic with rubber grips that harden and crack over time. The LG Billet USA Billet Climate Control Knobs are sold as a set of three, machined from 6061-T6, with a machined hole that allows the factory indicator light to pass through. Installation is the simplest on this list: pull the factory knobs off, push the billet replacements on. No tools required.
6. Billet Grab Handle (A-Pillar/Roof), $70
The rubber-coated factory grab handle deteriorates faster than almost any other interior component. The LG Billet USA Billet Grab Handle installs in under five minutes using factory hardware. Fitment also covers 1998-2004 Chevy S-10, GMC Sonoma, and Isuzu Hombre.
7. Billet Shift Lever, $70
The factory rubber-coated shift lever degrades over time, leaving a sticky or cracked surface. The LG Billet USA Billet Shift Lever is machined from 6061-T6 and installs in under five minutes with a T30 Torx bit.
8. Billet Glove Box Button, $65
The LG Billet USA Billet Glove Box Button is a small upgrade with outsized visual impact. The factory plastic button is held by two bolts; remove them, swap the button, reinstall. About ten minutes of work.
9. Billet Column Tilt Lever, $35
The steering column tilt lever is one of the most overlooked billet upgrades. The factory rubber wrapping breaks apart, leaving the metal core exposed. The LG Billet USA Billet Column Tilt Lever replaces it with a 6061-T6 piece with chamfered edges for ergonomic actuation. At $35, it's the lowest-effort visual improvement on this list.
10. Billet Headlight Knob, $30
The entry point for an OBS interior facelift. The LG Billet USA Billet Headlight Knob is CNC machined from 6061-T6 and available in machined raw or black anodized. Installation note: you need to break the tab on your factory headlight knob to install the billet version correctly.
GMT400 Compatibility Matrix: Which Parts Fit Which Years
Fitment questions are the most common source of frustration when ordering billet parts for OBS trucks. The GMT400 platform ran from 1988 to 1998 for the C/K trucks, but interior trim components changed significantly with the 1995 refresh. Here's the breakdown:
| Part | 1988-1994 OBS | 1995-1999 OBS | Tahoe/Suburban | S-10/Sonoma |
|---|---|---|---|---|
| Interior Door Handles | No | Yes (1992+ Suburban/Tahoe also) | Yes (1992-1999) | No |
| Door Lock Slides | No | Yes (C/K1500 only) | No | No |
| Seat Levers | No | Yes | No | No |
| Parking Brake Handle | No | Yes | Yes (1995-2000) | No |
| Climate Control Knobs | No | Yes | Yes | No |
| Grab Handle | No | Yes | No | Yes (1998-2004) |
| Shift Lever | No | Yes | Yes | No |
| Glove Box Button | No | Yes | No | No |
| Column Tilt Lever | No | Yes | Yes | No |
| Headlight Knob | No | Yes | Yes | No |
The 1988-1994 trucks used a different interior trim architecture. None of these parts fit pre-1995 GMT400 trucks. For Suburban and Tahoe owners: fitment is broader than many expect.
How to Install Billet Parts on OBS Chevy: Difficulty Ratings and Tips
Knowing how to install billet parts before you order is the difference between a Saturday afternoon project and a frustrating week. Almost every part is designed for home garage installation with basic hand tools.
Installation Difficulty Ratings by Part
| Part | Difficulty | Time Estimate | Tools Required |
|---|---|---|---|
| Climate Control Knobs | 1/5 | 2 minutes | None |
| Column Tilt Lever | 1/5 | 5 minutes | None |
| Grab Handle | 1/5 | 5 minutes | Factory hardware only |
| Shift Lever | 2/5 | 5 minutes | T30 Torx bit |
| Headlight Knob | 2/5 | 10 minutes | Needle-nose pliers |
| Glove Box Button | 2/5 | 10 minutes | Basic socket set |
| Parking Brake Handle | 2/5 | 15 minutes | Basic socket set |
| Seat Levers | 2/5 | 20 minutes | Phillips screwdriver |
| Door Lock Slides | 3/5 | 30 minutes | Trim panel tools |
| Interior Door Handles | 3/5 | 30-45 minutes | Drill, trim panel tools |
The door handles are the most involved because they require drilling out a fastening rivet. Watch a GMT400 door panel removal video first if you're unfamiliar with the process.
Will Billet Upgrades Affect Electrical Systems?
Billet aluminum interior upgrades do not affect electrical systems on your OBS Chevy. Every part is a mechanical replacement for a mechanical component. The climate control knobs replace the knob bodies only; the underlying rotary actuator and wiring remain untouched. The switch itself is not modified.
Best Billet Parts for OBS Chevy: Finish and Material Grade Comparison
Not all billet parts are equal. The best billet parts use aerospace-grade 6061-T6 aluminum, not pot metal or lower-grade alloys.
Here's what to look for when evaluating any billet part for your GMT400:
| Specification | What to Look For | What to Avoid |
|---|---|---|
| Alloy grade | 6061-T6 | Unspecified "aluminum" or pot metal |
| Machining method | CNC machined from solid stock | Cast or stamped components |
| Finish: raw | Machined aluminum, coatable | Painted or lacquered plastic |
| Finish: anodized | Type II or Type III anodizing | Chrome-plated plastic |
| Fitment method | CAD-modeled OEM dimensions | Generic fitment claims |
| Origin | Machined, assembled, and packaged in the USA | Unspecified origin |
The 6061-T6 designation is the most important specification. The "T6" refers to the temper, a solution heat treatment followed by artificial aging, that brings the alloy to maximum practical strength. According to ASM International's reference data on aluminum alloy tempers, T6 temper treatment produces significantly higher yield strength than annealed or T4 temper aluminum, which matters for high-contact parts.
The finish choice depends on your build direction. Machined raw finish has a bright, industrial look and can be further processed, chrome plating, powder coating, Cerakote, or hydro dipping are all viable. Black anodized finish is an electrochemical process that bonds a protective oxide layer to the aluminum surface, producing a harder, more scratch-resistant finish that reads as OEM-plus in a dark interior.
Maintaining Billet Aluminum Truck Parts for Long-Term Finish
Maintaining billet aluminum truck parts correctly is what separates a truck that looks great at five years from one that looks oxidized and neglected. The maintenance approach differs by finish type.
For machined raw (uncoated) billet aluminum:
Raw machined aluminum will oxidize over time when exposed to moisture, UV, and hand oils. The maintenance routine is straightforward:
- Clean with mild soap and water monthly, or after exposure to salt, mud, or cleaning chemicals
- Dry thoroughly; standing moisture accelerates oxidation
- Apply aluminum metal polish every 3-6 months to remove light oxidation and restore the machined surface
- Follow with carnauba wax or aluminum sealant to slow future oxidation
For black anodized billet aluminum:
Anodized finishes are harder and more resistant to oxidation than raw aluminum, but the anodized layer can be damaged by harsh alkaline cleaners or abrasive compounds. Maintenance is simpler:
- Clean with pH-neutral soap and soft cloth; avoid anything abrasive
- Avoid ammonia-based cleaners, which can strip the anodized layer over time
- Apply UV-protective detailing spray once or twice per year to maintain finish depth
- Do not use metal polish on anodized surfaces; it will remove the anodized layer
As noted in guidance from the Aluminum Anodizers Council on anodized finish care, anodized aluminum is significantly more durable than painted or plated surfaces but requires care to avoid alkaline chemical exposure.
Interior versus exterior placement:
Interior billet parts experience far less UV and moisture exposure than exterior components. A basic wipe-down with a microfiber cloth during regular interior cleaning is sufficient for day-to-day maintenance. Billet aluminum interior parts will genuinely outlast the truck.
Conclusion
The GMT400 interior upgrade market has a real problem: most plastic components are now past their service life, and OEM replacements are either unavailable or made from the same inferior plastic that failed the first time. Billet aluminum is the correct long-term solution, and LG Billet USA offers the complete interior upgrade set for 1995-1999 OBS Chevy and GMC trucks, machined from 6061-T6 aluminum, CAD-modeled for OEM fitment, and manufactured in the USA. Every order ships free. Start with the door handles and shift lever if you're prioritizing impact per dollar, or order the full interior set and transform your cab in a single weekend. Browse the complete OBS billet parts catalog at LG Billet USA and get your truck looking the way it should.
Frequently Asked Questions
What are the most popular billet interior upgrades for OBS Chevy trucks?
The most sought-after interior billet upgrades for the 1995-1999 GMT400 platform are interior door handles ($198), door lock slides ($115), and seat levers ($100). These three pieces get the most daily contact and are the first factory plastic components to crack or break. Pairing them with the billet shift lever ($70) and climate control knobs ($70) gives the cab a thorough restomod facelift without touching any electrical or mechanical systems.
Are billet aluminum parts better than plastic for OBS truck restoration?
Yes, for components that see constant handling. The factory plastic on GMT400 trucks is now 25-30 years old and prone to cracking, fading, and breaking under normal use. CNC-machined 6061-T6 billet aluminum won't fade, crack, or become brittle with age. The material also holds anodized and machined finishes far better than plastic, making it the practical choice for any restomod or daily-driver restoration where durability and appearance both matter.
How do I know billet parts will actually fit my 1995-1999 OBS Chevy without modification?
Parts engineered with CAD modeling and 3D scanning for the specific GMT400 platform are designed for OEM-like fitment. LG Billet USA uses both methods on every part to match factory mounting points exactly. Most interior pieces use the original factory hardware, so no drilling or fabrication is needed. The door handles are the one exception: one fastening rivet must be drilled out during installation, which is a straightforward step any DIYer can handle with basic tools.
Do billet parts improve the resale value of an OBS Chevy?
Billet upgrades typically improve perceived value on the restomod and classic truck market, where buyers pay a premium for trucks that have been thoughtfully updated rather than left with crumbling factory plastic. A full interior billet facelift, door handles, seat levers, shift lever, and climate controls, signals a well-maintained, detail-oriented build. While resale gains vary by market conditions, a clean billet interior consistently helps a truck stand out in listings and at shows.
What finish should I choose for OBS Chevy billet parts: machined or black anodized?
Machined finish delivers a bright, raw aluminum look that suits restomod builds and can be further customized with chrome plating, Cerakote, hydro dipping, or powder coat. Black anodized gives a sleek, OEM-plus appearance that blends with factory trim and resists oxidation better out of the box. For daily drivers in humid climates, black anodized requires less upkeep. For show trucks or custom builds where further coating is planned, machined raw is the more flexible starting point.
This article was written using GrandRanker