2018 GMC Sierra 1500 SLT
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Federal records · buyer verification
2018 GMC Sierra 1500
A component is listed below if NHTSA records a vehicle recall campaign, a manufacturer warranty extension or service campaign, or at least 10 distinct consumer complaints.
Recall campaigns
NHTSA lists these campaigns as covering certain 2018 GMC Sierra 1500 vehicles. One campaign can list several components, so adding these counts is not a way to total the campaigns — 7 vehicle campaigns are on record for this model-year.
- Service Brakes3 campaigns44 distinct complaints
- Air Bags4 campaignsno complaint count above OAV’s minimum of 10
Manufacturer campaigns
The manufacturer filed these with NHTSA as warranty extensions or service campaigns.
- Electrical SystemWarranty extensionmost recently Aug 26, 2024
A warranty extension does not establish that this vehicle is covered, or that coverage is unexpired. Coverage depends on the program, the VIN, and its date of first sale — confirm with a franchised dealer.
- Exterior LightingWarranty extensionmost recently May 3, 2024
A warranty extension does not establish that this vehicle is covered, or that coverage is unexpired. Coverage depends on the program, the VIN, and its date of first sale — confirm with a franchised dealer.
- StructureWarranty extensionmost recently May 3, 2024
A warranty extension does not establish that this vehicle is covered, or that coverage is unexpired. Coverage depends on the program, the VIN, and its date of first sale — confirm with a franchised dealer.
Federal law requires the manufacturer to remedy a safety recall at no cost to the owner — by repair, replacement or refund — for vehicles not more than 15 years old on the date the defect was determined.
Parts are sometimes on back-order and some remedies are interim, so a dealer may not be able to complete the work immediately. A specific vehicle’s current recall status is available through NHTSA’s VIN recall lookup.
OAV lists only communications filed as warranty extensions or service campaigns. GMC filed 950 other service communications for this model year; those are not listed.
These federal records are not an input to OAV’s price verdict.
These records describe the 2018 model-year, not any individual vehicle, and are not an inspection. One complaint can be recorded against more than one component, so counts do not sum to the model-year total. Service records for any component listed here are worth requesting from the seller. Showing 5 of 10 components with records above OAV’s publication floor — see all 10 for this model-year.
Complaints are unverified consumer reports submitted to NHTSA. Mileage is self-reported and frequently rounded. Complaint records as of 2026-09-28. Recall records as of 2026-09-28. Manufacturer communications as of 2026-09-28.
SLT
Price from the dealer. OAV has not verified whether it includes all dealer-required fees. Ask the dealer for a written out-the-door price.
Whitman, MA 02382
Is this 2018 GMC Sierra 1500 SLT a good deal?
OAV verdict: Fair Price
Why: Listed at $31,995, comparable market range $22,495–$31,998, based on 19 comparable listings.
The verdict judges the asking price only. It does not assess the vehicle's condition, history, fees or total purchase cost.
Market context (not a verdict input): Listed 27 days.
Market price position
$31,995 · within market range
- Comparable range
- $22,495 – $31,998
- vs. market
- $9,500 above low · $3 below high
- Comparable vehicles
- 19
Market Retail Price (MRP™)
$27,247This vehicle $31,995 · $4,748 (17%) above 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™)
$31,163This vehicle $31,995 · $832 (3%) above TRV
TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-10-01) — an estimate, not an appraisal. How TRV works.
Comparable vehicles nationally recently sold in an estimated 11–45 days.
What does Demand-Verified mean?
Local Market Range
Comparable listings in this vehicle's local market, rebuilt from the market snapshot shown above.
South Shore Auto Mall
Whitman, MA
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 South Shore Auto Mall 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: Oct 1, 2026Listed by an independent dealer in Whitman, MA · On lot for 27 days · VIN verifiable at NHTSA
This used 2018 GMC Sierra 1500 SLT is listed at $31,995 by South Shore Auto Mall in Whitman, MA 02382. It has 64,820 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is White. It features a 4WD drivetrain with a 5.3L V8 engine and Automatic transmission.
OAV's independent, evidence-backed Price-to-Market analysis rates this vehicle as Fair Price — priced in line with the supported comparable range. Based on 19 comparable listings matched to this vehicle, the estimated market range is $22,495 to $31,998. The local comparable range around Whitman, MA is $22,495 to $31,998; the local cohort is drawn around this dealer's market and can include listings across a state line. These comparisons match year, make, and model, using trim where the data supports it. OAV does not adjust comparable prices for mileage — every price shown is the real advertised price. On used vehicles, mileage can still cause OAV to withhold a verdict — very high or unreliable mileage, or a lower price better explained by higher-than-typical mileage than by a genuine market discount — rather than call it a deal it can't support.
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). Verdict methodology ptm-verdict-v1 · snapshot Oct 1, 2026. The comparable band (patent pending) is the input; ptm-verdict-v1 is the versioned OAV rule set that turns it into this verdict.
Market context
This listing is part of OAV's broader Whitman, MA trucks market analysis. OAV rates each vehicle against its comparable range and comparable count — local-first, widening the comparison set only when local inventory is too thin to support a reliable range; days-on-lot and demand signals are shown separately, not as verdict inputs.
How this deal is rated
OAV compares this 2018 GMC Sierra 1500 against similar vehicles currently available for sale — same make, model, and year range, using trim where the data supports it. OAV does not adjust comparable prices for mileage; on used vehicles it withholds a verdict when mileage would distort the comparison — very high or unreliable mileage, or a lower price better explained by higher-than-typical mileage than by a genuine market discount — rather than overstate a deal. Based on where this listing falls in that comparable set, it is rated:
- Great Deal — priced below the comparable-range floor by at least OAV's minimum-gap margin; a smaller gap under the floor is Fair Price.
- Fair Price — priced within the comparable range, or below the floor by less than that margin.
- Overpriced — priced above the comparable range.
- Unscored — OAV withholds a verdict when the evidence cannot support one: too few or too widely spread comparables, a price it cannot validate, a branded or salvage title, or mileage that would distort the comparison. The listing stays visible; only the rating is withheld.
Listings show OAV's Price-to-Market verdict and live market context for every dealer's inventory, whether or not the dealer has any relationship with OAV. A dealer that claims its listings can manage its profile and have buyer inquiries routed to it directly. A paying partner's own listings additionally carry an OAV Verified Partner label on the dealer contact block and a link to the dealer's own listing page. That is the complete list of what a relationship with OAV changes, and all of it concerns the dealer's identity on its own listings. Payment never changes a vehicle's verdict, its eligibility to be scored or cited, the evidence shown or withheld, or where and how prominently the listing appears on any OAV page, board, or answer. There is no paid placement, ranking, ordering, verdict badge, or featured position of any kind. OAV sells dealers insight into the evidence, never influence over it.
How this listing is verified
This vehicle listing was aggregated from an independent dealer in Whitman, MA, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 3GTU2NEC7JG523945 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 vehicle market standardization technology (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.
2018 GMC Sierra 1500 Market in MA
MA Market Listings
115
Average Price
$24,882
Price Range
$15,995–$33,813
Avg Days on Lot
87
Based on all 115 2016-2020 GMC Sierra 1500 listings in the MA market, the average asking price is $24,882. This listing at $31,995 is $7,113 above the broader MA average (29% above the MA average). This is a wider, all-trim comparison across MA; OAV's price verdict above uses the closer comparable set. Comparable prices in MA range from $15,995 to $33,813. Similar vehicles spend an average of 87 days on dealer lots in this market.
Similar GMC Sierra 1500 Listings in MA
8 similar listings shown (closest matches by model year and mileage) (subject trim: SLT — compare trims below)
This is a broad, statewide same-model set (any trim, mileage, or title) — not the qualified comparable cohort behind the verdict above; lower prices here typically reflect a different trim, higher mileage, or a branded title.
Image from the dealer's site. OAV does not own, control, or store dealer images.
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Image from the dealer's site. OAV does not own, control, or store dealer images.
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Image from the dealer's site. OAV does not own, control, or store dealer images.
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Image from the dealer's site. OAV does not own, control, or store dealer images.
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