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2026 GMC Sierra HD AT4
VIN
1GT4UPE78TF337490
This 2026 GMC Sierra HD AT4 is listed at $71,826 with 421 miles in Robstown, TX.
FAIR PRICE
within $1,141 of the typical market price
Asking $71,826 · typical market price $72,967 · based on 25 comparable same-build listings.
Market Price Range
Below market
$69,825
Typical price
$72,967
Above market
$80,108
Based on
25
comparable same-build listings.
This vehicle:
$71,826 — within $1,141 of the typical market price ($72,967)
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
Price increased $2,366 (+3.4%) over 38 days.
Jul 4, 2026 · $69,460
Aug 11, 2026 · $71,826
Asking prices recorded across 9 listing dates for VIN 1GT4UPE78TF337490, spanning 38 days.
Active listings
Full listing history on VehiSales →| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| Group 1 GMC Coastal Bend | Robstown, TX 78380 | $71,826 | 421 mi | 2026-07-05 |
Former listings
| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| Group 1 GMC Coastal Bend | Robstown, TX 78380 | $69,460 | 419 mi | 2026-07-04 |
What would this 2026 GMC Sierra HD AT4 cost per month?
Estimate the monthly payment on a $71,826 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
$1,280
per month
60 months · 7.0% APR · $7,183 down
Amount financed
$64,643
Total interest
$12,157
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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