I just bought a new turn signal switch for my jeep grand cherokke why wont my turn signal work when i try to use them

Have to work off of a wiring diagram & do some testing

You DO NOT Replace ANY Parts, until your testing finds
problem,then a failed part

change the battery in your key fob.may be low.

join a grand cherokee forum by googleing it and post this and all future questions there

sounds as though there is a leak, check all connections on a/c lines, now you will need to see if the clutch is getting power, if it is then the clutch will need replaced, if not then check to make sure where the fuses and relay plug into are receiving power. Hope this helped Tim

IF LEFT TURN SIGNAL BULB GOOD.TURN SIGNAL SWITCH COULD BE FAULTY.

COULD BE BLOW FUSE.FAULTY TURN SIGNAL SWITCH OR FAULTY TURN SIGNAL FLASHERS WHICH IS LOCATED FUSE / RELAY BOX JUST LEFT OF THE STEERING COLUMN.

Do you have 2wd or 4wd and 2.5 or 4.0 also need email address to send diagram to

YOU HAVE TO REPLACE THE TURN SIGNAL SWITCH.BECAUSE WHEN IT GOES OUT.SOME TIMES YOUR DIMMER SWITCH STOP WORKING.IF YOU GOING TO FIX IT YOUR SELF BESURE TO.DISARM AIR BAGS FIRST.

A very common issue with that particular transmission is the "Neutral Safety Switch". Check fuses of course. But if that is ok then try this. The neutral safety switch is located on the drivers side of the transmission case just above the trans pan. Pull off the three wire connector and jump to two out board terminels (a paper clip will do). Turn on the key and your backup lites should be on. FYI: By the way the center terminel is the neutral safety part (it grounds to the trans). Replacing it is a matter of unscrewing it . Be aware you will get some trans fluid leakage and this switch has a gasket that may or may not stick to the case. Make sure the gasket is there or you will have a leak. (new one would be good but they can be reused) There have also been issues with the rear lighting harness connector located in the rear corners by the tail lites. (usually those create lamp outage warnings with the Vehicle Information Center) Good luck

You need a new Multifunction switch...Its very common. The switch controls those functions and more. Its hard to explain how it works but I am pretty sure thats what it is.....