2018 GMC Sierra 1500 SLT
Vehicle Details
SLT
Marrero, LA 70072
Is this 2018 GMC Sierra 1500 SLT a good deal?
OAV verdict: Unscored
Why: Listed at $24,995. OAV found only 9 comparable listings — too few for a reliable market range or verdict. Days on lot: 1,541 days (market average 98 days).
Market price position
Limited comparable data — OAV has not assigned a reliable market verdict to this listing yet.
Comparable vehicles nationally recently sold in an estimated 14–57 days.
- This listing has been available about 27.0x longer than comparable vehicles typically take to sell (cohort sells in 14–57 days; this one is at 1541). Confirm its history, condition, availability, and out-the-door price before proceeding.
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.
Am Auto Mart Marrero Llc
Marrero, LA
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 Am Auto Mart Marrero Llc for current availability of this 2018 GMC Sierra 1500 SLT 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 2018 GMC Sierra 1500
Listing updated: Aug 12, 2026Listed by an independent dealer in Marrero, LA · On lot for 1541 days · VIN verifiable at NHTSA
This used 2018 GMC Sierra 1500 SLT is listed at $24,995 by am auto mart marrero llc in Marrero, LA 70072. It has 103,701 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Black. It features a RWD 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. OAV has not assigned a reliable comparable market range for this vehicle yet — the comparable set is too limited.
This vehicle has been on the lot for 1541 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 Marrero, LA 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 against similar vehicles currently available in the local and regional market — same make, model, and year range (currently across available trims and configurations; trim-level matching is rolling out), filtered for comparable mileage. 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 Marrero, LA, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 3GTP1NEC3JG175142 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.
2018 GMC Sierra 1500 Market in LA
LA Market Listings
162
Average Price
$27,944
Price Range
$9,990–$42,500
Avg Days on Lot
98
Based on all 162 2016-2020 GMC Sierra 1500 listings in the LA market, the average asking price is $27,944. Because OAV has not assigned a reliable price verdict to this listing, it does not state how it compares to this broader average. Comparable prices in LA range from $9,990 to $42,500. Similar vehicles spend an average of 98 days on dealer lots in this market.
Similar GMC Sierra 1500 Listings in LA
8 similar listings shown (closest matches within ±2 model years) and ±30,000 miles (subject trim: SLT — compare trims below)
2016 GMC Sierra 1500
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2016 GMC Sierra 1500
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2017 GMC Sierra 1500
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2017 GMC Sierra 1500
SLT
Baton Rouge, LA
2018 GMC Sierra 1500
SLT
Kenner, LA
2017 GMC Sierra 1500
SLT
Stonewall, LA
2018 GMC Sierra 1500
SLT
Alexandria, LA
2017 GMC Sierra 1500
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Baton Rouge, LA