96 Dodge Durango all lights work running lights do not work it has a bad dimer switchcould that make the running lights stop working

The turn signals issue is most likely a fuse or the flasher. The blower issue is a bad blower motor resistor. As far as your running problem if you mean no start no lights, ect check your battery and alternator.

bang on the top of the cluster and see if that works if not you have to remove the cluster and replace the bulbs if they are replace able if you need a new cluster but bang on it or wait check your dimer make sure its on not off also goodluck

shift sensor in trans bad take the tarns apart . well drop pan n fluid the drop out the valve body then u can see the shift sensor

Does your Durango have trailer wiring installed, and if so, was it factory installed or installed aftermarket? If installed aftermarket, there's a really good chance your wiring issues are due to incorrect connectors being used to tap in to the factory wiring which has allowed water and other elements to corrode the wiring, causing an intermittent connection.

Is there a check engine light on? The mechanic can check the trouble code to see what it is. It could be that your fuel pump stopped working, a bad fuse, did you check them, or your cars computer (brain) stopped working. Was there any problems before it went dead, symptoms?

The first item to check would be the flasher unit in or near the fuse block. Did they stop working suddenly? Did the signals start blinking faster before they went out? It isn't likely all the bulbs would go bad at the same time.

if its a single taillight ie stop and signal light are the same then the stop light runs thru the signal light circuit in the steering column

Sound like the turn signal switch is bad,also check the harness if you have an aftemarket tow hitch.

check your dimer switch