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2020 GMC Sierra SLT
VIN
3GTP8DED8LG372941
This 2020 GMC Sierra SLT is listed at $29,900 with 110,177 miles in San Benito, TX.
GOOD DEAL
$1,934 below typical price
Asking $29,900 · typical market price $31,834 · based on 58 comparable same-build listings.
Market Price Range
Below market
$28,562
Typical price
$31,834
Above market
$35,866
Based on
58
comparable same-build listings.
This vehicle:
$29,900 — $1,934 below the typical market price ($31,834)
Market data as of August 16, 2026
Vehicle Decode
- Body
- Pickup
- Engine
- 5.3L · V8 · Gasoline
- Drive
- 4x2
- 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 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 |
|---|---|---|---|---|
| Tejeda's Auto Credit, LLC | San Benito, TX 78586 | $29,900 | 110,177 mi | 2026-06-28 |
| Tejeda's Auto Credit | San Benito, TX 78586 | $29,900 | 110,177 mi | 2026-06-28 |
Former listings
| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| Tejeda's Auto Credit | San Benito, TX 78586 | $30,900 | 110,177 mi | 2026-06-28 |
| Tejeda's Auto Credit, LLC | San Benito, TX 78586 | $30,900 | 110,177 mi | 2026-06-28 |
What would this 2020 GMC Sierra SLT cost per month?
Estimate the monthly payment on a $29,900 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
$533
per month
60 months · 7.0% APR · $2,990 down
Amount financed
$26,910
Total interest
$5,070
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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