Replace control arm bushing

GREGK4949

MEMBER
1999 BUICK PARK AVENUE

Instructions on how to replace the rear drivers side control arm bushing, (the one in front) on a 1999 Buick park ave. What all do I have to disconnect to lower control arm to get to bushing?

Thursday, March 22nd, 2012 AT 4:26 PM

2 Replies

HMAC300

MECHANIC
48,601 POSTS

Raise� and� support� vehicle.� Allow� suspension� to� hang� free.� Remove� wheel.� Disconnect� stabilizer� bar� from� lower� control� arm.� Separate� ball� joint� from� lower� control� arm.� See BALL� JOINT�.� Remove� lower� control� arm
bolts.� Remove� lower� control� arm.

Installation

NOTE: Tighten� lower� control� arm� bolts� with� vehicle� weight� on� lower� control� arms.

To� install, � reverse� removal� procedure.� Tighten� nuts� and� bolts� to� specification.� See TORQUE� SPECIFICATIONS� table.� Check� wheel� alignment.� See SPECIFICATIONS� &� PROCEDURES � CARS � EXCEPT
SATURN� article� in� WHEEL� ALIGNMENT.

LOWER� CONTROL� ARM� BUSHINGS

Removal� &� Installation

1. Remove� lower� control� arm.� See LOWER� CONTROL� ARM�.� On� vehicles� with� bushing� mounted� on� frame, � remove� and� install� bushing� as� illustrated, � ensuring� bushing� is� fully� seated.� See Fig.� 3�.
2. On� vehicles� with� bushing� mounted� on� lower� control� arm, � use� a� hammer� and� punch� to� tap� down� flare� on� lip� of� bushing.� Remove� bushing.� Install� new� bushing.� To� retain� new� bushing, � tighten� nut� on� flare� tool� to� obtain
a� 45 degree� flare� on� bushing� See Fig.� 4�.� Ensure� bushing� is� secure� in� lower� control� arm.

Fig.� 3:� Replacing� Lower� Control� Arm� Bushings� (Frame Mounted� Bushings)
Courtesy� of� GENERAL� MOTORS� CORP.

Fig.� 4:� Flaring� Lower� Control� Arm� Bushing
Courtesy� of� GENERAL� MOTORS� CORP.

If you have an air chisel you can push the bushing out with that instead of a tool. However you do need the tool to flare teh bushing so it doesn't come out.