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2026 GMC Sierra HD AT4
VIN
1GT4UPEY6TF340266
This 2026 GMC Sierra HD AT4 is listed at $90,125 with 6 miles in Decatur, TX.
ABOVE TYPICAL
$4,255 above typical price
Asking $90,125 · typical market price $85,870 · based on 1,767 comparable same-build listings.
Market Price Range
Below market
$80,855
Typical price
$85,870
Above market
$91,246
Based on
1767
comparable same-build listings.
This vehicle:
$90,125 — $4,255 above the typical market price ($85,870)
Market data as of August 16, 2026
Vehicle Decode
- Body
- Pickup
- Engine
- 6.6L · V8 · Diesel
- 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
Price increased $8,275 (+10.1%) over 7 days.
Jul 29, 2026 · $81,850
Aug 5, 2026 · $90,125
Asking prices recorded across 3 listing dates for VIN 1GT4UPEY6TF340266, spanning 7 days.
Active listings
Full listing history on VehiSales →| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| James Wood Chevrolet Buick GMC | Decatur, TX 76234 | $90,125 | 6 mi | 2026-08-05 |
| James Wood Chevrolet Buick GMC Decatur | Decatur, TX 76234 | $82,075 | 6 mi | 2026-07-30 |
Former listings
| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| James Wood Chevrolet Buick GMC Decatur | Decatur, TX 76234 | $81,625 | 6 mi | 2026-07-29 |
What would this 2026 GMC Sierra HD AT4 cost per month?
Estimate the monthly payment on a $90,125 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
$1,606
per month
60 months · 7.0% APR · $9,013 down
Amount financed
$81,112
Total interest
$15,248
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.
Watch the price on this model
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