Electrical contacts in the tail lamp housing tend to break or melt, which can cause the brake lights to fail or work intermittently. Complete inspection of the tail light housing and bulbs is recommended before replacing any parts.Google+
Car Problem Reports
Jeep Grand Cherokee Electrical Contacts in the Tail Lamp Housing May Break or Melt
Jeep Grand Cherokee Problem
Average Mileage: 134,831 mi (13,100 mi - 258,031 mi)
Visitor, 2000 Jeep Grand Cherokee, 238,000 mi
When the head lights are on the left brake light will not work.
Visitor, 2000 Jeep Grand Cherokee, 225,000 mi
I have had a tail light/brake light issue ever since buying my Jeep used in 2004. I have replaced the sockets, used aluminum foil as suggested as numerous forums and last February eve bought an entire rear light assembly. A few months ago the passenger side tail light stopped working again. I can't figure it out and am afraid of being ticketed or worse, involved in an accident. So disappointed in Jeep for not coming up with a solution to a KNOWN issue.
Visitor, 2000 Jeep Grand Cherokee, 135,768 mi
all rear lights work untill you push breakpedel,then the pass-side will go out.let off break pedel they come back on.
Had problem for years with rear passenger side light brake light burning out.
Finally went to a salvage yard and got a replacement light unit..end of problem.
Examination of the old unit revealed fused metal on light contact with unit, apparently
shorted and overheated breaking the contact
Visitor, 2004 Jeep Grand Cherokee, 160,000 mi
Driver side brake light out. Followed instructions found on-line to pry up contacts with flat head screwdriver. No problems since...approx 6 months ago.
Visitor, 2000 Jeep Grand Cherokee, 258,031 mi
Due to the housing being plastic the contacts pull apart due to melting. I have replaced the entire light bar twice, at a significant cost, and replaced the socket only on two separate dates. When the light goes out now I open the contacts again until they can make a complete circuit. This however is only a temporary fix, sometimes it will last for several months. Jeep is aware of this problem but will not retrofit due to cost on their end.
Visitor, 2000 Jeep Grand Cherokee
bulbs keep blowing and one side lamp with not work at all
Visitor, 2000 Jeep Grand Cherokee, 129,000 mi
tail lights not getting ground added a ground brake lights want come on when i push brake pedal
Visitor, 1999 Jeep Grand Cherokee, 153,000 mi
Same issue we have taillights then we do not have done everything that the internet suggested except for replacing the entire assembly.
Last year I had to replace the right rear Light Assembly, At the contacts were the socket screws into the body of the light assembly were melted and cracked and then I did not make contact with the electic leads. Purchased one at a junk yard brand new for $89.00 and that was much more than the Dealers cost.