Replace the bulb. There are usually 2 filaments in each bulb and one is most likely out. Replacing it should solve the problem
Check/replace bulbs Check sockets for power, ground, corrosion
its a bad circuit card in the assembly...the whole assembly will have to be changed. you can get a new one on eBay for 40.00
There is a dead short to ground in the circuit.
How to change the brake switch on a 2004 Jeep grand Cherokee Laredo
The check engine light on a 2005 Jeep Grand Cherokee looks like this... Here is a link Check Engine Light It looks like a little yellow engine.
your left and right bulbs are problay bad they are two filament bulbs the park filiments are good and the brake filament is bad
If equipped, it is above the liftgate glass.
There is a dead short to ground in the circuit.
How do you install passenger tail light kit for a 2004 grand cherokee?
Yes.
How to change the brake switch on a 2004 Jeep grand Cherokee Laredo
The 1993 Jeep grand Cherokee brake light switch simply plugs in and out. The brake light switch is located beneath the dashboard on the drivers side of the engine compartment.
Replace the bulbs
The brake light fuse on a 2003 Jeep Grand Cherokee can be found by looking at the cover to the main fuse box. It identifies each fuse and its location.
The check engine light on a 2005 Jeep Grand Cherokee looks like this... Here is a link Check Engine Light It looks like a little yellow engine.
your left and right bulbs are problay bad they are two filament bulbs the park filiments are good and the brake filament is bad
wjjeeps.com . they show how to replace every light and with what bulb
If equipped, it is above the liftgate glass.
Time for an oil change.