2018 GMC Sierra 1500 SLT
Vehicle Details
SLT
Houston, TX 77063
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 2018 GMC Sierra 1500 SLT a good deal?
OAV verdict: Fair Price
Why: Listed at $20,988, comparable market range $18,994–$31,825, based on 16 comparable listings. Days on lot: 248 days (market average 77 days).
Market price position
$20,988 · within market range
- Regional range
- $18,994 – $31,825
- vs. market
- $1,994 above low · $10,837 below high
- Comparable vehicles
- 16
Market Retail Price (MRP™)
$25,410This vehicle $20,988 · $4,422 (17%) 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™)
$31,496This vehicle $20,988 · $10,508 (33%) below TRV
TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-07-30) — an estimate, not an appraisal. How TRV works.
Branded-title price context: Branded-title Sierra 1500s like this typically sell ~20% 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: $15,140 – $25,368 (clean-title range scaled by the branded discount — an estimate, not an appraisal).
Similar vehicles recently sold in an estimated 13–57 days.
- This listing has been on market about 4.4x longer than typical for similar vehicles (cohort sells in 13–57 days; this one is at 248). Long days-on-lot on a fast-turn cohort can signal title concerns, mechanical issues, or pricing the dealer won't actually honor. Recommend a vehicle history report before spending more time.
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.
Crystal Auto Group, Llc
Houston, TX
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 Crystal Auto Group, 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: Jul 29, 2026Listed by an independent dealer in Houston, TX · On lot for 248 days · VIN verifiable at NHTSA
This used 2018 GMC Sierra 1500 SLT is listed at $20,988 by crystal auto group, llc in Houston, TX 77063. It has 65,047 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Silver. 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 Fair Price — priced at market value. Based on 16 similar vehicles in the Houston market, the estimated market range is $18,994 to $31,825. The local market range in TX is $18,994 to $31,825.
This vehicle has been on the lot for 248 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 Houston, TX 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, 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 Houston, TX, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 3GTP1NEC7JG570893 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 TX
Comparable Vehicles
686
Average Price
$27,616
Price Range
$8,900–$55,220
Avg Days on Lot
77
Based on 686 comparable 2016-2020 GMC Sierra 1500 listings in TX, the average asking price is $27,616. This listing at $20,988 is $6,628 below average (24% below market). Comparable prices in TX range from $8,900 to $55,220. Similar vehicles spend an average of 77 days on dealer lots in this market.
Similar GMC Sierra 1500 Listings in TX
8 comparable vehicles within ±2 model years and ±30,000 miles (subject trim: SLT — compare trims below)
2018 GMC Sierra 1500
SLT
Houston, TX
2016 GMC Sierra 1500
SLT
Garland, TX
2018 GMC Sierra 1500
SLT
Houston, TX
2018 GMC Sierra 1500
SLT
Houston, TX
2017 GMC Sierra 1500
SLT
Houston, TX
2018 GMC Sierra 1500
SLT
Houston, TX
2018 GMC Sierra 1500
SLT
Houston, TX
2018 GMC Sierra 1500
SLT
Houston, TX