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2026 GMC Sierra HD AT4
VIN
1GT4UPEY3TF136833
This 2026 GMC Sierra HD AT4 is listed at $78,155 with 14,444 miles in Morton, IL.
FAIR PRICE
within $745 of the typical market price
Asking $78,155 · typical market price $78,900 · based on 149 comparable same-build listings.
Market Price Range
Below market
$73,383
Typical price
$78,900
Above market
$89,111
Based on
149
comparable same-build listings.
This vehicle:
$78,155 — within $745 of the typical market price ($78,900)
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 $1,053 (+1.4%) over 11 days.
Aug 2, 2026 · $77,788
Aug 13, 2026 · $78,841
Asking prices recorded across 4 listing dates for VIN 1GT4UPEY3TF136833, spanning 11 days.
Active listings
Full listing history on VehiSales →| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| Bob Grimm Chevrolet | Morton, IL 61550 | $78,155 | 14,444 mi | 2026-08-03 |
Former listings
| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| Bob Grimm Chevrolet | Morton, IL 61550 | $77,788 | 14,443 mi | 2026-08-02 |
What would this 2026 GMC Sierra HD AT4 cost per month?
Estimate the monthly payment on a $78,155 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
$1,393
per month
60 months · 7.0% APR · $7,816 down
Amount financed
$70,339
Total interest
$13,241
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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