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2021 GMC Sierra AT4
VIN
1GTU9EET2MZ170496
This 2021 GMC Sierra AT4 is listed at $35,590 with 91,445 miles in Grapevine, TX.
GOOD DEAL
$1,310 below typical price
Asking $35,590 · typical market price $36,900 · based on 113 comparable same-build listings.
Market Price Range
Below market
$29,919
Typical price
$36,900
Above market
$42,126
Based on
113
comparable same-build listings.
This vehicle:
$35,590 — $1,310 below the typical market price ($36,900)
Market data as of August 16, 2026
Vehicle Decode
- Body
- Pickup
- Engine
- 3.0L · V6 · Diesel
- Drive
- 4WD/4-Wheel Drive/4x4
- Doors
- 4
- Made by
- GENERAL MOTORS LLC
Safety
- ✗ Backup camera
- ✗ Blind-spot monitor
- ✗ Lane departure
- ✗ ABS
- ✗ Electronic stability
Safety & ownership
EPA fuel economy (MPG)
City
23
Highway
30
Combined
26
Est. fuel cost:
$1,790/year
Assumes 15,000 miles a year at $3.10/gallon and 26 MPG combined.
Model-level data for the 2021 GMC Sierra from NHTSA (recalls, NCAP crash tests) and EPA fueleconomy.gov, refreshed July 28, 2026.
Active listings
Full listing history on VehiSales →| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| Classic Chevrolet | Grapevine, TX 76051 | $35,590 | 91,445 mi | 2026-08-14 |
| Classic Chevrolet Grapevine | Grapevine, TX 76051 | $35,140 | 91,445 mi | 2026-08-14 |
What would this 2021 GMC Sierra AT4 cost per month?
Estimate the monthly payment on a $35,590 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
$634
per month
60 months · 7.0% APR · $3,559 down
Amount financed
$32,031
Total interest
$6,009
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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