Brakes - Vented Rotors Now Available
90pontiac18Bulletin Number: 90-5-15
Reference Number: 085002
Publish Date: 8/90
Subject: RETROFIT OF 1988-1990 LEMANS WITH SOLID FRONT BRAKE ROTORS TO 1990 VENTED ROTORS (INSTRUCTIONS)
Models
Affected: 1988-90 LEMANS MODELS
It is now possible to install 1990 vented front rotor brake systems on all past model LeMans vehicles with solid front brake rotors. Vented rotors will reduce brake temperature and thus increase front brake pad life.
Parts Required:
Instructions:
1. Remove and replace front rotors per instructions in the service manual, section 5. Do not remove calipers and do not install front brake pads.
2. Remove the caliper outer halves retained by two bolts. Item 5. Do not remove the caliper.
3. Install the new caliper halves # 3494359 using new bolts # 3487214. Torque to 80-110 N-m (60-80 ft.lbs.)
4. Install new front pads # 18017995 with new retention pins # 3487487. Be sure pads are in the proper location, the pads with wear indicators should be against the piston.
5. Complete installation and road test vehicle.
Parts are currently available from GMSPO.
Labor Operation: T3257
Labor Time: 1.0 Hour