One problem related to brake fluid leak has been reported for the 2002 Jeep Grand Cherokee. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Jeep Grand Cherokee based on all problems reported for the 2002 Grand Cherokee.
Driving my 2002 Jeep Grand Cherokee on 4/15/2012, I approached a stop sign and proceeded to apply the brakes. As I applied the brake pedal, it functioned as normal for maybe 2-3 seconds. The brake pedal then lost it's pressure and dropped to the floorboard. I pulled the vehicle to the side of the road and opened the hood. No evidence of brake fluid was visually apparent at the master cylinder, though the fluid was approx. 1/2" low in the reservoir. Looking under the vehicle at each wheel to see if brake fluid leakage was evident at any of the caliper(s), I noticed brake fluid leaking from the stainless steel brake line fastened along the frame rail on the driver's side of the vehicle. There was no evidence of corrosion or damage of any kind, the brake lines were still bright and shiney, the way stainless appears, and there was no evidence of rust or corrosion on the frame of the vehicle either. I cannot verify that the leak was indeed coming from the brake line, as the vehicle was not on a lift for a better visual inspection. I'm questioning if the brake system has been a problem with other Jeep vehicles and if anything has been documented information concerning this issue.