U.S. Patent No. 12,236,477 — Patented Automotive Data Standardization Technology
OAV
2018 GMC Sierra 1500 Denali

Vehicle Details

VIN3GTU2PEC9JG534439
TrimDenali
Exterior ColorBlack
Drivetrain4WD
Engine5.3L V8
TransmissionAutomatic
Fuel TypeUnleaded
Inventory Typeused
Days on Lot27

2018 GMC Sierra 1500 Denali

Denali

Unscored
$26,716128,835 mi

Waukesha, WI 53186

Is this 2018 GMC Sierra 1500 Denali Denali a good deal?

OAV verdict: Unscored

Why: Listed at $26,716, comparable market range $29,467–$37,110, based on 4 comparable listings. Days on lot: 27 days (market average 59 days).

Market price position

29,467
37,110
26,716

$26,716 · $2,751 below market low

$29,467comparable$37,110
Regional range
$29,467 – $37,110
vs. market low
— $2,751 (9% below)
Comparable vehicles
4
Demand-Verified· Backed by recent sales data
Faster-than-average sell-through

Similar vehicles recently sold in an estimated 1352 days.

What does Demand-Verified mean?

Market Breakdown

Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges refresh daily.

Local Range$32,257 – $32,257
Regional Range$29,467 – $37,110

Dealer Info

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Waukesha, WI

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About This 2018 GMC Sierra 1500 Denali

Listing updated: May 20, 2026

Listed by a franchise dealer in Waukesha, WI · On lot for 27 days · VIN verifiable at NHTSA

This used 2018 GMC Sierra 1500 Denali Denali is listed at $26,716 by a franchise dealer in Waukesha, WI 53186. It has 128,835 miles on the odometer. The exterior color is Black. It features a 4WD drivetrain with a 5.3L V8 engine and Automatic transmission.

OAV's AI-powered Price-to-Market analysis rates this vehicle as Unscored due to insufficient comparable data. Based on 4 similar vehicles in the Waukesha market, the estimated market range is $29,467 to $37,110. The local market range in WI is $32,257 to $32,257.

This vehicle has been on the lot for 27 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 Waukesha, WI 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 2018 GMC Sierra 1500 Denali against similar vehicles currently available in the local and regional market — same make, model, and year range, filtered for comparable mileage. Based on where this listing falls in that comparable set, it is rated:

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 a franchise dealer in Waukesha, WI, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 3GTU2PEC9JG534439 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 refreshed daily; Price-to-Market analysis uses comparable vehicles within the same geographic market.

2018 GMC Sierra 1500 Denali Market in WI

Comparable Vehicles

126

Average Price

$32,313

Price Range

$19,349–$45,345

Avg Days on Lot

59

Based on 126 comparable 2016-2020 GMC Sierra 1500 Denali listings in WI, the average asking price is $32,313. This listing at $26,716 is $5,597 below average (17% below market). Comparable prices in WI range from $19,349 to $45,345. Similar vehicles spend an average of 59 days on dealer lots in this market.

Similar GMC Sierra 1500 Denali Listings in WI

8 comparable vehicles within ±2 model years and ±30,000 miles (subject trim: Denali — compare trims below)