GMC Sierra available at Classic Buick GMC in Houston
Updated October 24, 2026
Classic Buick GMC has 20 GMC Sierra in stock, priced from $29,888 — estimated $481/month at 8.99% APR over 84 months with $0 down, on approved credit, for that lowest-priced vehicle; terms vary by vehicle age and mileage, listed cheapest first.
| In stock | 20 GMC Sierra (as of October 24, 2026) |
| Priced from | $29,888 |
| Drivetrain | 16 4X4, 4 RWD |
| Listed | Lowest advertised price first |
12023 GMC Sierra 1500 Elevation
US$29,88899,158 mi · 8-Speed Automatic · RWD
- Lowest-priced on this list
- 19 / 22 MPG city/hwy
22024 GMC Sierra 1500 Pro
US$31,74474,901 mi · 10-Speed Automatic · RWD
- $7,370 below the list median
- 16 / 21 MPG city/hwy
32018 GMC Sierra 1500 SLT
US$33,99849,559 mi · 8-Speed Automatic with Overdrive · 4WD
- $5,116 below the list median
- Under 100,000 km
- 15 / 20 MPG city/hwy
42025 GMC Sierra 1500 SLT
US$35,43645,478 mi · 10-Speed Automatic · RWD
- $3,678 below the list median
- Under 100,000 km
- 16 / 20 MPG city/hwy
52025 GMC Sierra 1500 SLT
US$35,94575,850 mi · 10-Speed Automatic · 4WD
- $3,169 below the list median
- 15 / 19 MPG city/hwy
62019 GMC Sierra 2500HD SLT
US$36,156134,647 mi · Allison 1000 6-Speed Automatic · 4WD
- $2,958 below the list median
72025 GMC Sierra 1500 SLT
US$37,31155,199 mi · 10-Speed Automatic · 4WD
- $1,803 below the list median
- Under 100,000 km
- 15 / 19 MPG city/hwy
82025 GMC Sierra 1500 SLT
US$37,75758,522 mi · 10-Speed Automatic · 4WD
- $1,357 below the list median
- Under 100,000 km
- Certified
- 15 / 19 MPG city/hwy
92024 GMC Sierra 1500 SLT
US$38,63826,645 mi · 10-Speed Automatic · RWD
- $476 below the list median
- Under 100,000 km
- 16 / 20 MPG city/hwy
102025 GMC Sierra 1500 SLT
US$39,11442,100 mi · 10-Speed Automatic · 4WD
- Under 100,000 km
- 15 / 19 MPG city/hwy
112023 GMC Sierra 1500 AT4
US$41,43879,780 mi · 10-Speed Automatic · 4WD
- 14 / 17 MPG city/hwy
122025 GMC Sierra 1500 Elevation
US$47,40714,792 mi · 10-Speed Automatic · 4WD
- Under 100,000 km
- 15 / 19 MPG city/hwy
132024 GMC Sierra 1500 AT4
US$48,99766,200 mi · 10-Speed Automatic · 4WD
- 14 / 17 MPG city/hwy
142024 GMC Sierra 1500 Denali
US$49,20545,640 mi · 10-Speed Automatic · 4WD
- Under 100,000 km
- 15 / 19 MPG city/hwy
152020 GMC Sierra 2500HD Denali
US$55,18246,243 mi · 10-Speed Automatic · 4WD
- Under 100,000 km
162023 GMC Sierra 1500 AT4
US$55,2204,632 mi · 10-Speed Automatic · 4WD
- Under 100,000 km
- 14 / 17 MPG city/hwy
172026 GMC Sierra 1500 AT4
US$60,5972,586 mi · 10-Speed Automatic · 4WD
- Newest on this list
- Under 100,000 km
- 14 / 17 MPG city/hwy
182025 GMC Sierra 1500 AT4X
US$61,26127,821 mi · 10-Speed Automatic · 4WD
- Under 100,000 km
- 19 / 20 MPG city/hwy
192026 GMC Sierra 1500 Denali Ultimate
US$71,60410,049 mi · 10-Speed Automatic · 4WD
- Newest on this list
- Under 100,000 km
- 15 / 19 MPG city/hwy
- 20
2025 GMC Sierra 2500HD Denali
Call for price44,826 mi · 10-Speed Automatic · 4WD
- Under 100,000 km
Inventory current as of October 24, 2026.
How are these trucks priced and financed?
Prices for used GMC Sierra trucks at Classic Buick GMC run from $29,888 to $71,604. The dealership has dealer-configured lender rates on file. For the median-priced vehicle on the lot at $39,114, financing terms vary by creditworthiness: excellent or good credit qualifies for 84 months at 7.99% APR, which works out to $609 per month with $0 down, while fair or rebuilding credit may qualify for 72 months at 12.99% APR, which equals $785 monthly with $0 down. Longer terms reduce monthly payments but increase total interest paid over the loan life.