Dealer

O'connor Buick Gmc

Explore a wide selection of high-quality used and certified pre-owned vehicles at O'connor Buick Gmc – your trusted auto dealership in Augusta, ME.









Dealers
42 cars found
Used 26,636 mi

2023 GMC Acadia Denali

Augusta, ME
Gasoline
Automatic
AWD
$41,980
or $731/mo
Used 16,175 mi

2025 Buick Encore GX Avenir

Augusta, ME
Gasoline
Automatic
AWD
$33,980
or $592/mo
Used 34,975 mi

2024 GMC Sierra 3500HD SLE

Augusta, ME
Gasoline
Automatic
AWD
$57,980
or $1,010/mo
Used 83,539 mi

2021 GMC Sierra 1500 SLE

Augusta, ME
Diesel
Automatic
AWD
$32,980
or $575/mo
Used 11,547 mi

2025 GMC Sierra 1500 Elevation

Augusta, ME
Gasoline
Automatic
AWD
$55,980
or $975/mo
Used 1,069 mi

2026 GMC Sierra 1500 Denali

Augusta, ME
Gasoline
Automatic
AWD
$65,980
or $1,149/mo
Used 60,414 mi

2022 GMC Acadia AT4

Augusta, ME
Gasoline
Automatic
AWD
$27,980
or $487/mo
Used 13 mi

2026 GMC Sierra 2500HD Denali Ultimate

Augusta, ME
Diesel
Automatic
AWD
$99,425
or $1,732/mo
Used 44,372 mi

2023 GMC Canyon Denali

Augusta, ME
Gasoline
Automatic
AWD
$43,980
or $766/mo
Used 31,237 mi

2024 GMC Sierra 1500 Denali Denali

Augusta, ME
Gasoline
Automatic
AWD
$57,980
or $1,010/mo