One problem related to engine squeaking noise has been reported for the 1999 Jeep Grand Cherokee. The most recently reported issues are listed below.
During activation of brake system traveling at any speed there is a pulsation in the brakes, there is a squeaking noise, and vehicle pulls to the right. Dealership has examined vehicle three times, and failed to remedy the problem. Brake rotors and front stabilizer bars have been replaced. Consumer stated there was also a possible oil leak, dealer replaced the tie rod to pitman arm and the real pinion seal, also the steering dampner assembly was replaced,and the engine surges at times sometimes hesitates, also there was a leak behind the driver/rear floorboard.