Used Gmc for Sale in Ontario, CA

Browse 227 used Gmc listings for sale in Ontario, CA from dealers near you.

2026 Denali Ultimate

Gmc Sierra 1500

$79,440

5 mi · truck

Mark Christopher Auto Center · Ontario, CA

2026 Denali Ultimate

Gmc Sierra 1500

$79,440

5 mi · truck

Mark Christopher Auto Center · Ontario, CA

2024 AT4

Gmc Canyon

$39,555

30,648 mi · truck

Mark Christopher Auto Center · Ontario, CA

2026 Denali Ultimate

Gmc Sierra 2500HD

$93,265

5 mi · truck

Mark Christopher Auto Center · Ontario, CA

2026 Elevation

Gmc Acadia

$47,680

5 mi · suv

Mark Christopher Auto Center · Ontario, CA

2026 Elevation

Gmc Acadia

$47,830

2 mi · suv

Mark Christopher Auto Center · Ontario, CA

2026 Elevation

Gmc Acadia

$47,680

5 mi · suv

Mark Christopher Auto Center · Ontario, CA

2025 Elevation

Gmc Acadia

$36,127

23,561 mi · suv

Mark Christopher Auto Center · Ontario, CA

2025 Elevation

Gmc Acadia

$36,420

24,177 mi · suv

Mark Christopher Auto Center · Ontario, CA

2025 Elevation

Gmc Acadia

$36,899

19,888 mi · suv

Mark Christopher Auto Center · Ontario, CA

2026 Denali

Gmc Acadia

$62,905

5 mi · suv

Mark Christopher Auto Center · Ontario, CA

2026 Denali

Gmc Acadia

$62,905

5 mi · suv

Mark Christopher Auto Center · Ontario, CA

2026 Elevation

Gmc Acadia

$52,320

5 mi · suv

Mark Christopher Auto Center · Ontario, CA

2026 Elevation

Gmc Acadia

$48,680

5 mi · suv

Mark Christopher Auto Center · Ontario, CA

2026 AT4

Gmc Canyon

$45,990

5 mi · truck

Mark Christopher Auto Center · Ontario, CA

2026 AT4

Gmc Canyon

$44,595

5 mi · truck

Mark Christopher Auto Center · Ontario, CA

2026 AT4

Gmc Canyon

$44,595

5 mi · truck

Mark Christopher Auto Center · Ontario, CA

2026 Denali

Gmc Canyon

$53,390

2 mi · truck

Mark Christopher Auto Center · Ontario, CA

2026 AT4

Gmc Canyon

$44,595

5 mi · truck

Mark Christopher Auto Center · Ontario, CA

2026 AT4

Gmc Canyon

$45,565

5 mi · truck

Mark Christopher Auto Center · Ontario, CA

2026 AT4

Gmc Canyon

$45,090

5 mi · truck

Mark Christopher Auto Center · Ontario, CA

2026 AT4

Gmc Canyon

$45,565

5 mi · truck

Mark Christopher Auto Center · Ontario, CA

2026 AT4

Gmc Canyon

$45,090

5 mi · truck

Mark Christopher Auto Center · Ontario, CA

2026 AT4

Gmc Canyon

$45,070

5 mi · truck

Mark Christopher Auto Center · Ontario, CA