Blown bulb - or loose wire !
If the Avalanche came with the factory trailering package, the trailer lights are separately fused from the other truck lights. Check your fuse panel layout for a 10-amp fuse for left side and a separate fuse for right side turn signal/brake light on the trailer.
Take a light tester and check the pins at the truck side trailer plug. With the truck set for running lights check for power at the pins. If there is power then there is a loose or bad wire on the trailer side. If there is no power then there is a power problem on the truck side.
There are separate fuses for trailer signal lights in main fuse panel
yes
Check that the wiring between the truck and the trailer are connected. Unplug them and then plug them in again. Also check the fuses under the dashboard (if it is a moving truck, there are also fuses under the hood) to be sure they are ok. Finally, check the bulbs in the lights.
Trailer Lights Work on Other Vehicles but Not MineIF the lights [tail, turn, and brake] are working on your vehicle, AND the trailer lights will work on some other vehicle, that confirms:That the problem is NOT in your vehicle's wiring system.That the problem is either in the trailer wiring, OR is caused by the IMPROPER connection of the connector plug wires to the wiring of your vehicle.It is critical that the connector plugs [on the vehicle and the trailer] are properly connected to the correct wires.The fact that NONE of the lights work when connected to your truck suggests that the defect is related to the GROUND wireas that is the only wire common to all the different light circuits.
I believe you have to unscrew a couple bolts on the inside of the truck bed to get the taillight assembly off the truck then you can unscrew the light sockets and replace the burnt out bulb
Try the tractor with a different trailer, the pig tail is most likely not connecting properly.
Most Volvo trucks on North American roads don't use a proprietary tail light... tail lights, aside from custom ones, are pretty universal. Yes, you should be able to, at least at some truck stops.
Hitch the trailer. Connect the lights. Start your car or truck. Turn the turn signal on. Get out and go behind the trailer. See if they blink. Repeat for the other side.
Yes with a lil bit of tinkering. They are a near direct swap.
You'll need a truck that's heavy enough to pull the trailer, equipped with a trailer ball hitch to attach the trailer. You also need to make sure the horse trailer has operating turn signal and brake lights.