I have a dts and my back 3rd taillight is partly out what to do?

Whatever fell off isn't a torsion bar - there isn't one. For help, describe the part better (a picture would help).

Third gear clutch pack worn out ! Your best bet is have check out at the transmission shop ! May have DTC'S - diagnostic trouble codes , shift solenoid .

check the brake light switch located on the top of the brake paddle also check the butten on it if its stuck in.

see the diagram for repair and troubleshooting:

If the 3rd break light on the rear of cab works then check the panels where the bulbs snap into make sure there is no corrotion if so replace the panels you can get them at any auto parts for $20. to $40 each.

hope this will help.

Means you have a taillight, brake light, reverse light, license plate light, or 3rd brake light out.

Try searching www.car-parts.com for used parts, or the dealer ($$$). You can also check ebay.

pop the trunk and you should see two screws along the rear taillight assembly. remove the screws and the taillight assembly should pop out. you can then twist the bulb and pop it out along with the harness, put the new bulb in and reverse.

If it's your 3rd brake light, the bolts holding it in against the rear window will be found inside your trunk along the top side of your trunk (get in and look up)

Check for a faulty ground to the 3rd brake light. A lot of wiring between it and the signal switch that feeds power to the 3rd brake light. Hope this helps