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2025 GMC Sierra HD AT4
VIN
1GT4UPE78SF209104
This 2025 GMC Sierra HD AT4 is listed at $70,660 with 33,583 miles in Old Saybrook, CT.
FAIR PRICE
within $1,011 of the typical market price
Asking $70,660 · typical market price $69,649 · based on 36 comparable same-build listings.
Market Price Range
Below market
$66,817
Typical price
$69,649
Above market
$74,487
Based on
36
comparable same-build listings.
This vehicle:
$70,660 — within $1,011 of the typical market price ($69,649)
Market data as of August 16, 2026
Vehicle Decode
- Body
- Pickup
- Engine
- 6.6L · V8 · Gasoline
- Drive
- 4WD/4-Wheel Drive/4x4
- Made by
- GENERAL MOTORS LLC
Safety
- ✗ Backup camera
- ✗ Blind-spot monitor
- ✗ Lane departure
- ✗ ABS
- ✗ Electronic stability
Price history for this VIN
Asking price over time
Dec 25, 2024 · $78,175
Aug 1, 2026 · $70,660
Asking prices recorded across 3 listing dates for VIN 1GT4UPE78SF209104, spanning 19 months.
Active listings
Full listing history on VehiSales →| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| Vachon Buick GMC | Old Saybrook, CT 6475 | $70,660 | 33,583 mi | 2026-08-01 |
Former listings
| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| Battles Buick GMC | Bourne, MA 02532 | $78,175 | — | 2024-12-25 |
What would this 2025 GMC Sierra HD AT4 cost per month?
Estimate the monthly payment on a $70,660 vehicle. Move the numbers to match your own loan.
10% down
7.0% is a typical rate for a well-qualified buyer — use your own quote if you have one.
Loan term
Estimated monthly payment
$1,259
per month
60 months · 7.0% APR · $7,066 down
Amount financed
$63,594
Total interest
$11,946
Estimate only. Excludes tax, title, registration and dealer fees, and assumes a fixed-rate loan with equal monthly payments. Your actual rate depends on your credit and lender.
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