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2026 GMC Sierra HD AT4
VIN
1GT4UPE78TF339787
This 2026 GMC Sierra HD AT4 is listed at $84,168 with 7 miles in Herculaneum, MO.
ABOVE MARKET
$8,378 above typical price
Asking $84,168 · typical market price $75,790 · based on 539 comparable same-build listings.
Market Price Range
Below market
$71,320
Typical price
$75,790
Above market
$80,477
Based on
539
comparable same-build listings.
This vehicle:
$84,168 — above the market range (typical price $75,790)
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
Jul 2, 2026 · $84,168
Jul 24, 2026 · $84,168
Asking prices recorded across 4 listing dates for VIN 1GT4UPE78TF339787, spanning 22 days.
Active listings
Full listing history on VehiSales →| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| Sapaugh GM Country | Herculaneum, MO 63048 | $84,168 | 7 mi | 2026-07-24 |
Former listings
| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| Sapaugh GM Country | Herculaneum, MO 63048 | $84,168 | 6 mi | 2026-07-24 |
| Sapaugh GM Country | 63048 | $89,225 | 6 mi | 2026-07-23 |
What would this 2026 GMC Sierra HD AT4 cost per month?
Estimate the monthly payment on a $84,168 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
$1,500
per month
60 months · 7.0% APR · $8,417 down
Amount financed
$75,751
Total interest
$14,249
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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