2021 GMC Sierra 1500 AT4
Vehicle Details
AT4
Boise, ID 83713
Reported title-brand history on this vehicle (salvage, 2 accidents). OAV indicator from reported history events — not an official title or NMVTIS report.
Is this 2021 GMC Sierra 1500 AT4 a good deal?
OAV verdict: Great Deal
Why: Listed at $34,600, comparable market range $39,250–$48,933, based on 10 comparable listings. Listed 102 days · longer than most comparable local listings (typical ~15–90 days).
Market price position
$34,600 · $4,650 below market low
- Comparable range
- $39,250 – $48,933
- vs. market low
- — $4,650 (12% below)
- Comparable vehicles
- 10
Market Retail Price (MRP™)
$44,092This vehicle $34,600 · $9,492 (22%) below MRP
MRP™ is the midpoint of the comparable market range — the representative price the market is asking for similar vehicles. How MRP works.
True Retail Value (TRV™)
$40,987This vehicle $34,600 · $6,387 (16%) below TRV
TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-08-23) — an estimate, not an appraisal. How TRV works.
Branded-title price context: Branded-title Sierra 1500s like this typically sell ~17% below comparable clean-title vehicles. The market range shown above is for clean-title cars — this listing's price reflects branded-title history.
Branded-adjusted estimate: $32,519 – $40,541 (clean-title range scaled by the branded discount — an estimate, not an appraisal).
Comparable vehicles nationally recently sold in an estimated 14–58 days.
Market Breakdown
Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges are rebuilt from the market snapshot shown above.
Autosavvy Boise
Boise, ID
OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.
Request availability and out-the-door price
OAV will route your inquiry to Autosavvy Boise for current availability of this 2021 GMC Sierra 1500 AT4 and an out-the-door price quote (taxes, fees, addons included).
OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.
About This 2021 GMC Sierra 1500
Listing updated: Aug 23, 2026Listed by an independent dealer in Boise, ID · On lot for 102 days · VIN verifiable at NHTSA
This used 2021 GMC Sierra 1500 AT4 is listed at $34,600 by autosavvy boise in Boise, ID 83713. It has 54,427 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Red. It features a 4WD drivetrain with a 6.2L V8 engine and Automatic transmission.
OAV does not assign a price-to-market verdict to branded-title vehicles. This listing has a reported branded/salvage title, so its price is not rated against clean-title market comparables.
This vehicle has been on the lot for 102 days.
Analysis powered by OAV's patented inventory standardization technology (U.S. Patent No. 12,236,477).
Market context
This listing is part of OAV's broader Boise, ID trucks market analysis. OAV compares vehicles using local and regional price-to-market ranges, days-on-lot, comparable count, and demand signals where available.
How this deal is rated
OAV compares this 2021 GMC Sierra 1500 against similar vehicles currently available in the local and regional market — same make, model, and year range, using trim where trim data supports it. OAV does not adjust comparables for odometer; on very high-mileage vehicles it withholds a verdict rather than overstate a discount the odometer explains. Based on where this listing falls in that comparable set, it is rated:
- Great Deal — priced below the typical range for comparable vehicles.
- Fair Price — priced within the expected range for comparable vehicles.
- Overpriced — priced above the typical range for comparable vehicles.
Listings show OAV's PTM-derived deal quality and live market context. OAV-claimed dealers manage their listing profile and route buyer inquiries directly. Paid OAV partners surface additional verification signals.
How this listing is verified
This vehicle listing was aggregated from an independent dealer in Boise, ID, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 3GTP9EEL2MG372865 can be independently verified via the U.S. Department of Transportation's NHTSA VIN decoder, and safety recalls at NHTSA's recall database.
Vehicle attributes (year, make, model, trim, mileage, location) are standardized using OAV's patented methodology (U.S. Patent No. 12,236,477), which normalizes naming conventions and deduplicates cross-listed inventory across the dealership network. Listing data is processed daily; Price-to-Market analysis uses comparable vehicles within the same geographic market.
2021 GMC Sierra 1500 Market in ID
ID Market Listings
125
Average Price
—
Price Range
—
Avg Days on Lot
77
Based on all 125 2019-2023 GMC Sierra 1500 listings in the ID market. Because OAV has not assigned a reliable price verdict to this listing, it does not state how it compares to this broader average. Similar vehicles spend an average of 77 days on dealer lots in this market.
Similar GMC Sierra 1500 Listings in ID
8 similar listings shown (closest matches within ±2 model years) and ±30,000 miles (subject trim: AT4 — compare trims below)
2019 GMC Sierra 1500
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2020 GMC Sierra 1500
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Twin Falls, ID
2020 GMC Sierra 1500
Elevation
Saint Anthony, ID
2022 GMC Sierra 1500
SLE
Post Falls, ID
2023 GMC Sierra 1500
SLE
Garden City, ID
2021 GMC Sierra 1500
Elevation
Idaho Falls, ID
2019 GMC Sierra 1500
SLE
Nampa, ID
2021 GMC Sierra 1500
SLT
Lewiston, ID