Product Description
1988-1998 GMC Truck, Standard Cab, Driver & Passenger Seat Belt Kit
- Driver and passenger belts
- End release buckles
- Bench or bucket seats
- Single retractor conversion
- FMVSS 209 and 302 rated
GMT400 GMC Sierras left the factory with a dual-retractor seat belt setup, and Seatbelt Planet notes that those retractors often become troublesome or quit altogether as they age. This driver and passenger kit replaces them with a simpler single-retractor arrangement and end release buckles, and the summary says it suits trucks with either a bench or bucket seats.
Fitment
Listed for 1988-1998 GMC standard cab trucks, driver and passenger positions, with bench or bucket seating.
Webbing Colors
Pick from 52 webbing shades; 13 are premium. The older description text quotes 32 colors, but the current option menu shows 52.
Why Replace?
When one of the two factory retractors seizes, the belt may hang loose or refuse to extend. Converting both front seats at once solves the problem on both sides and keeps the belts matched.
Belt Care
Let the strap rewind on its own, avoid pinching it in the door, and clean the webbing with a damp cloth and gentle soap.
About the 1988-1998 GMC Sierra Standard Cab
GMC launched the GMT400 Sierra for 1988 with a lower, more aerodynamic cab, independent front suspension on two-wheel-drive models and fuel injection across the range. These trucks are now popular modern classics.
Before You Install
Inspect the floor and pillar mounting points on both sides of the cab, clean their threads and look for rust under the carpet or mat.
Good to Know
Pair for both front outboard seats.
Seatbelt Planet's description was written with the Chevrolet twin in mind, but the GMC and Chevy cabs share the same layout.
Single-retractor belts have fewer moving parts to wear out.
Seatbelt Planet makes both belts to order in the chosen shade.
Ordering the pair together avoids mismatched webbing from separate orders.
Three listing photos show the parts Seatbelt Planet supplies.
A center belt is available separately for bench seat trucks.
Square-cut GMT400 cabs are roomy, and riders slide across the bench or settle into buckets comfortably, but only if the belts work. A seized dual retractor can leave the shoulder strap dangling or locked short, which is frustrating every time someone climbs in.
Owners keeping a Sierra as a daily driver often find this kit is the fix for belts that have become unreliable after decades of service.
Seatbelt Planet builds both belts after checkout, cutting the webbing fresh in your selected shade so the left and right straps arrive identical in color.
Frequently Asked Questions
Does it fit bench and bucket seats?
Seatbelt Planet's summary says it is for bench or bucket seats.
What buckle does it use?
End release.
Why a conversion?
Seatbelt Planet explains that the factory belts in these trucks used two retractors, which often fail with age; this kit updates them to a single retractor.
How many belts?
Two, for the driver and passenger.
Does the description mention Chevrolet?
Yes, the text was written for the Chevrolet twin, but the listing is titled for GMC.
Hardware?
Not specified in the listing.
Questions about fit?
Call 574-226-6676.
1988-1998 GMC Truck, Standard Cab, Driver & Passenger Seat Belt Kit specifications
- Seatbelt Planet aftermarket seat belt / restraint product (application per listing title)
- Vehicle application from listing: 1988-1998 GMC Truck, Standard Cab, Driver & Passenger
- Kit listing — see overview for which seating positions / belt count are included
- Tested and certified to meet FMVSS 209 and FMVSS 302 (certification tag on belts)
- Sold as aftermarket replacement — confirm buckle style, retractable vs fixed, and seat type before order
- Complete belts are preferred; mixing buckle/tongue brands is not recommended (components are designed to work together)
- 1-year manufacturer warranty for component issues from ship date (excludes abuse, accident damage, or disassembly)
- 90-day satisfaction guarantee per Seatbelt Planet (installed returns may incur restocking fee)
Installation Tips — 1988-1998 GMC Truck, Standard Cab, Driver & Passenger Seat Belt Kit
- Confirm this listing matches your vehicle (1988-1998 GMC Truck, Standard Cab, Driver & Passenger), seat type (bench vs bucket), and buckle/retractor style before installing.
- Inspect mounting points for solid metal structure. Seatbelt Planet products are aftermarket — fabrication or adapters may be required on some vehicles.
- Use appropriate grade hardware. Some listings sell mounting hardware separately.
- Install a complete belt assembly when possible; do not mix unmatched buckle and tongue brands.
- After install, verify full extension, retraction (if applicable), and latching before driving.
- If unsure, use a professional installer. Improper installation can cause serious injury.
Selection help: Seatbelt Planet FAQ / guides at seatbeltplanet.com/faq.html · phone 405-736-0088.
Vintage Car Radio does not offer installation.
1988-1998 GMC Truck, Standard Cab, Driver & Passenger Seat Belt Kit manuals
- Seatbelt Planet FAQ (FMVSS, warranty, returns)
- Seatbelt Planet common questions / selection help
- Use any instruction sheet packed with your order for model-specific steps
Manufacturer: Seatbelt Planet · 405-736-0088
One-Year Seatbelt Planet Warranty
Per Seatbelt Planet, seat belts are covered under a one-year manufacturer warranty for component issues from the date shipped. Warranty returns are not accepted if there has been obvious abuse, the belt was involved in an accident, or the belt has been disassembled / components removed.
Seatbelt Planet also states a 90-day satisfaction guarantee; installed returns may be subject to a restocking fee. RMA required — contact Seatbelt Planet or Vintage Car Radio at 844-802-4499 / 574-226-6676.
Vintage Car Radio does not install seat belts.
FAQ — 1988-1998 GMC Truck, Standard Cab, Driver & Passenger Seat Belt Kit
Are these FMVSS / DOT approved?
Seatbelt Planet states belts are tested and certified to FMVSS 209 and 302; the certification tag is on the belt.
Can I replace only one side?
Seatbelt Planet recommends installing a complete belt — buckle and tongue are designed to work together.
Will this fit 1988-1998 GMC Truck, Standard Cab, Driver & Passenger?
Match the years, make/model, and seat position in the title. Call Seatbelt Planet at 405-736-0088 if you need a custom belt.
Do you install?
No.
Need help?
844-802-4499 / 574-226-6676, or Seatbelt Planet 405-736-0088.
Specs
Installation Tips
Manuals
Warranty
One-Year Seatbelt Planet Warranty
Per Seatbelt Planet, seat belts are covered under a one-year manufacturer warranty for component issues from the date shipped. Warranty returns are not accepted if there has been obvious abuse, the belt was involved in an accident, or the belt has been disassembled / components removed.
Seatbelt Planet also states a 90-day satisfaction guarantee; installed returns may be subject to a restocking fee. RMA required — contact Seatbelt Planet or Vintage Car Radio at 844-802-4499 / 574-226-6676.
Vintage Car Radio does not install seat belts.