2020 GMC Sierra AT4

VIN  1GTP9EEL7LZ312417

This 2020 GMC Sierra AT4 is listed at $39,500 with 63,865 miles in Chester, PA.

ABOVE TYPICAL $3,066 above typical price Asking $39,500 · typical market price $36,434 · based on 79 comparable same-build listings.
VehiLeaks · Vehicle History Report
The full history of this 2020 GMC Sierra AT4
VIN 1GTP9EEL7LZ312417 · one-time $6, no subscription
  • Reported accidents & damage
  • Title brands — salvage, flood, lemon
  • Odometer readings over time
  • Every past listing: price, dealer, photos
Pickup 6.2L V8 4WD Gasoline
2020 GMC Sierra AT4
$6 one-time
Get the full report → Instant access after checkout

Market Price Range

Below market
$30,822
Typical price
$36,434
Above market
$41,296
Based on 79 comparable same-build listings.
This vehicle: $39,500 — $3,066 above the typical market price ($36,434)
Market data as of August 17, 2026

Vehicle Decode

Body
Pickup
Engine
6.2L · V8 · Gasoline
Drive
4WD/4-Wheel Drive/4x4
Doors
4
Made by
GENERAL MOTORS LLC

Safety

  • Backup camera
  • Blind-spot monitor
  • Lane departure
  • ABS
  • Electronic stability

Price history for this VIN

Price increased $490 (+1.3%) over 4 days.

Aug 7, 2026 · $39,010 Aug 11, 2026 · $39,500

Asking prices recorded across 2 listing dates for VIN 1GTP9EEL7LZ312417, spanning 4 days.

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 2020 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
Breneman Ford Chester, PA 19013 $39,500 63,865 mi 2026-08-11

What would this 2020 GMC Sierra AT4 cost per month?

Estimate the monthly payment on a $39,500 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
$704
per month
60 months · 7.0% APR · $3,950 down
Amount financed
$35,550
Total interest
$6,690

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

Prices move every week. We'll email you when the typical asking price for a 2020 GMC Sierra moves 3% or more — no account, one-click unsubscribe.

We only email you about this vehicle's price. Unsubscribe from any message.

More GMC Sierra for sale

2020 GMC Sierra AT4
2020 GMC Sierra AT4
$38,291
83,302 mi · Charleston, SC
2020 GMC Sierra SLE
2020 GMC Sierra SLE
$39,045
47,898 mi · McHenry, IL
2020 GMC Sierra Denali
2020 GMC Sierra Denali
$39,336
95,843 mi · Green Cove Springs, FL
2020 GMC Sierra AT4
2020 GMC Sierra AT4
$39,495
84,418 mi · Clay Center, KS
2020 GMC Sierra Denali
2020 GMC Sierra Denali
$39,634
82,989 mi · Knoxville, TN
2020 GMC Sierra SLE
2020 GMC Sierra SLE
$40,990
75,118 mi · Tunkhannock, PA
2020 GMC Sierra Denali
2020 GMC Sierra Denali
$43,995
69,031 mi · Saint Augustine, FL
2020 GMC Sierra AT4
$45,484
133,439 mi · Leesburg, VA
VehiSales · Cars for Sale
Shopping for a GMC Sierra like this?
Browse every GMC Sierra on the market right now — live dealer listings with photos and prices, already filtered to this model near Chester, PA.
GMC Sierra 2019–2021 Near Chester, PA
Browse on VehiSales →
Powered by VinAssessment — real-time pricing intelligence for car dealers.