easy try a junk yard or buy a new lighter
--check the fuse
Under the dash, below and slightly to the left of the cigarette lighter. You'll have to remove dash panels to get to it.
side panel on driver's right by the hinge on open door.
5on5
In the engine on the driver's side, underneath the battery cover.
In the 2012 GMC 3500, the fuse for the cigarette lighter is typically located in the fuse box under the dashboard. It is usually labeled as "CIG" or "Lighter." To confirm the exact location and specifications, it's best to refer to the owner's manual for the vehicle, as fuse arrangements can vary by model and configuration.
Buy a lighter from Canadian tire that will fit your car and puch the lighter in the outlet it should now work
it is located under the dash behind the knee bolster to the left of the cigarette lighter.
To change the cigarette lighter in a 2004 GMC Savana 3500 van, first, disconnect the negative battery terminal to ensure safety. Then, use a flathead screwdriver to gently pry off the lighter's trim bezel. Remove the old lighter by twisting and pulling it out of its socket, and then replace it with the new lighter by inserting it into the socket and securing any necessary clips. Finally, reattach the trim bezel and reconnect the battery.
They (the locks and the lighter) are on the same #13 fuse, along with the power lumbar support motor.
drivers side under the dash...to the left of the pedals
Under the radio to the left of the cigarette lighter and auxiliary power outlets. you must remove the bottom cover.
its a 15 amp under hood in fuse box same fuse powers up plug for code reader