GMC Suburban 10 Sill Plate for Sale | OEM Used Door Sill Trim

Description

About the GMC Suburban 10 Sill Plate

Need a replacement GMC Suburban 10 door sill plate? Part Nests sources OEM used door sill plates / door threshold trim for GMC Suburban 10 (1/2-ton) applications from the 1973-1991 US production era of the third-generation “square body” Suburban. The “10” designation is important context – it was GM’s pre-1992 naming convention where “10” indicated 1/2-ton (light-duty). GM changed the naming to “1500” in 1992 with the GMT400 platform era. Call (855) 634-4447 to verify year and body configuration before ordering.

Pre-1992 GM Naming Convention (Critical Context)

• The old naming (through 1991): “10” designated 1/2-ton (light-duty), “20” designated 3/4-ton (heavy-duty), “30” designated 1-ton (heaviest-duty). The C prefix meant 2WD; the K prefix meant 4WD. So a K10 Suburban was a 4WD 1/2-ton Suburban
• Naming change 1992: GM changed to “1500” (1/2-ton), “2500” (3/4-ton), “3500” (1-ton) with the GMT400 platform introduction for the 1988 pickup and 1992 Suburban
• Why it matters: A “Suburban 10” is exclusively a 1973-1991 model. If someone says “Suburban 1500” they mean 1992+. The two are on different platforms with mostly different parts
• Chevrolet C10 / K10 and GMC C1500 / K1500 for the Suburban 10 model line: Chevrolet and GMC produced Suburbans simultaneously. Chevrolet Suburban 10 and GMC Suburban 10 shared platform and most parts with different branding

Third-Generation “Square Body” Suburban 1973-1991

• Third-generation platform: The 1973-1991 Suburban was on the third-generation Suburban platform – the iconic boxy 1970s-80s GM full-size SUV. Nicknamed “square body” for its distinctive boxy styling
• Body-on-frame full-size construction: Traditional GM full-size architecture. Shared platform with Chevrolet C/K pickup, Blazer, and Jimmy of the era
• Engines: 5.0L (305 V8), 5.7L (350 V8) – the ubiquitous GM small-block Chevy V8, 7.4L (454 V8) big-block Chevy V8 for heavy hauling, and the 6.2L / 6.5L Detroit Diesel V8 – the diesel option for the era
• Configurations: Two-door full-size SUV (early), four-door full-size SUV (more common), plus panel wagon and specialty variants
• Usage: Family transport (large family SUV), ranch and farm use, government fleet, RV towing, and general heavy-duty family transport

Suburban Nameplate Legacy (Since 1935, 90+ Years)

• Since 1935: The Chevrolet Suburban nameplate has been in continuous production since 1935 – one of the longest continuous automotive nameplates in the world. 14+ generations across the decades
• Historical significance: Suburban is often credited as the original American full-size SUV nameplate – predating the modern SUV concept
• Continuous evolution: Multiple platform generations from pre-war body-on-frame to modern independent front suspension and modern electronics. Still in current production – the modern Chevrolet Suburban is an ongoing family SUV
• Cultural presence: Featured extensively in American film, television, and government use. Presidential motorcade Suburbans, movie chase Suburbans, and family Suburbans are all part of American automotive culture

Sill Plate / Door Threshold Trim Specifications

• Type: OEM door sill plate / door threshold trim
• Function: Trim panel that covers the door threshold – the metal edge where the door meets the door frame. Provides visual finish, protects the door threshold metal from wear, and can include model badging
• Construction: Stamped aluminum or painted / chromed metal with mounting hardware for door threshold attachment. May include Suburban or GMC branding badge integrated with the plate
• Position variants: Front driver-side, front passenger-side, rear driver-side, rear passenger-side. Specify position when ordering
• Cross-reference: Cross-references with Chevrolet C10 / K10 same-year pickup, Chevrolet Blazer / GMC Jimmy same-year SUV, and Chevrolet C10 / K10 Suburban same-year applications (Chevrolet and GMC Suburbans share most parts)

Related GMC / Chevrolet Truck Listings

• Suburban 20 (3/4-ton) same-generation: Our GMC or Chevy Suburban 20 skid plate listing covers the 3/4-ton heavy-duty variant of this same generation. Together the Suburban 10 (1/2-ton) and Suburban 20 (3/4-ton) form the full-line third-generation Suburban coverage
• GMC 2500 HD pickup: The heavy-duty pickup complement to Suburban listings

Vehicle Compatibility

Why Buy From Part Nests

• OEM verified door sill plate for GMC Suburban 10 (1/2-ton) 1973-1991 square-body era
• Pre-1992 GM naming convention documented – clear differentiation from 1992+ Suburban 1500
• Cross-references with Chevrolet C10 / K10 same-year pickup, Blazer / Jimmy, and Chevrolet Suburban 10
• Surface intact, mounting integrity confirmed, cosmetic condition documented
• Free shipping to all 50 states
• 15 day replacement warranty on component defects
• Support team familiar with square-body Suburban and pre-1992 GM naming conventions
• Call (855) 634-4447 to confirm year, body configuration, and door position before ordering.