Two problems related to automatic transmission have been reported for the 1998 Buick Park Avenue. The most recently reported issues are listed below.
On may 25, 2003 I started to pull out onto a street, and my 1998 Buick Park Avenue got part way out into the street and then would not move, except at a snail's pace. Finally I was able to pull on out, but not before a car was right upon me. I took it to a dealer and TSB existed on a valve in the transmission. I believe this TSB should be extended to a recall, because I almost got hit when I pulled out because the car more or less stalled while I was entering the street. If you see that you have plenty of room to pull out into traffic, one does not expect the car to suddenly creep or stall. This problem with the transmission is definitely a safety problem-I experienced it first hand.
Loose bolt stuck in transmission. Nar 07/09/2003 the consumers vehicle would not go into reverse, because the bolts backed out, which caused the gasket to leak in the transmission. The consumer had to pay approx $1400. In repairs and feels that these damages were caused by the dealership and that she should be reimbursed for defective parts placed on a brand new vehicle. The rotors also had to be replaced.