GMC Suburban 7th Gen
Known as the "Square Body," the 7th generation Suburban (1973-1991) is the longest-running and first 4-door version of the iconic nameplate. It's a favorite among collectors for its classic looks and simple utility, with a wide market ranging from affordable projects to high-dollar restored 4x4s.
Find one with Spotter →GMC Suburban 7th Gen sold for a median of $11,763 over the last 12 months, based on 12 auction sales; the middle 50% sold between $8,425 and $16,063. 99 currently for sale.
The 7th generation GMC Suburban, produced from 1973 to 1991, is the longest-running generation of any Suburban. Nicknamed the "Square Body," it was the first to offer a conventional 4-door body style, which massively increased its practicality and appeal as a family vehicle. Available in 2WD (C-series) and 4WD (K-series) with half-ton (10) and three-quarter-ton (20) ratings, these trucks offered a wide range of V8 engines and trim levels like the Sierra and High Sierra.
Collectors are drawn to the Square Body Suburban for its classic, rugged styling and simple, durable mechanicals. Parts availability is excellent due to platform sharing with the C/K pickups, making them relatively easy and affordable to maintain or modify. Their versatility means they're equally at home as restored show trucks, lifted off-road rigs, or practical vintage haulers for towing and camping.
The market for these Suburbans is broad. The average sale price hovers around $19,000, but this figure covers a wide spectrum. Project-level trucks can be found for under $10,000, while well-preserved survivors or professionally restored 4x4 models can command prices over $50,000. Desirability is highest for well-optioned, rust-free K20 4x4s from the later years of production.
Buying Tips
- Check for rust thoroughly in rocker panels, cab corners, floor pans, and around the wheel arches. Frame integrity is key, so inspect it carefully, especially near the rear leaf spring hangers.
- The small-block V8s are durable, but look for signs of oil leaks, blue smoke from the exhaust, and any overheating issues. For 4x4 models, confirm the transfer case engages and disengages properly.
- Interiors are prone to sun damage. Inspect the dashboard for cracks, which are very common, and check the condition of the upholstery and headliner. Sourcing specific interior trim pieces can be difficult.
- The heavy doors often cause hinge pins and bushings to wear out, leading to door sag. Open and close all doors to check for proper alignment and ease of use.
- Test all electrical systems. Decades-old wiring can become brittle, leading to frustrating and hard-to-diagnose issues with gauges, lights, and power accessories.
Based on recent sales, prices range from $5,300 for projects to $55,750 for excellent, well-optioned examples.
250 GMC Suburban 7th Gen vehicles have been tracked across auctions and listings on Hypercars, with 99 currently live.
Data sourced from Bring a Trailer, Cars & Bids, eBay Motors, PCarMarket, and Collecting Cars. Updated daily.
Frequently Asked Questions
How much does a GMC Suburban 7th Gen cost?
Over the last 12 months, GMC Suburban 7th Gen sold for a median of $11,763 across 12 auction sales tracked on Hypercars; the middle 50% sold between $8,425 and $16,063. There are 99 currently for sale.
How many GMC Suburban 7th Gen listings are for sale right now?
There are 99 GMC Suburban 7th Gen listings currently live across auctions, dealers, and marketplaces tracked by Hypercars.