Seville V8-273 4.5L (1989)
Vehicles Built Prior to October, 1989 without Vinyl Tops - In October, 1989 the lifter arm guide pin slot was reduced to prevent looseness of the glass
panel linkage when the glass is closed. The new lifter arms were implemented on Sevilles at VIN LU803080 and on Eldorados at VIN LU604077.
Oldsmobile Toronados VIN 302169 and Buick Rivieras VIN 403851.
On vehicles built prior to the breakpoint, replace the lifter arms using the part numbers listed below. Reference the appropriate Service Information
Manual, Section 10-9, for removal and installation procedure.
Lifter Arm
P/N
Left
12504123
Right
12504124
Do not use these lifter arms on vehicles with full vinyl tops. These arms will not provide adequate adjustment for proper glass panel alignment to the
vinyl top retainer ring. Proper adjustment of the glass panel and mounting tabs should be sufficient to eliminate rattles on vehicles with vinyl tops.
To verify parts stock for the updated lifter arms, look for the number stamped on the inside section of the arm. New lifter arms will be stamped
1186-A-3100 A.B. or 1186-A-3101 A.B.
For warranty purposes use:
Labor Operation
Labor Time
T6428
0.6 hr
Vehicles Built Prior to December, 1988 - Replace the lifter arm pivot plates with thicker parts. This change was implemented into production in early
December, 1988.
Parts requirements are as follows:
Pivot Plate Kit, P/N 12500028 - includes RH and LH pivot plates and six rivets (four black, two silver). Only the black rivets are used.
Replace the pivot plates with new, thicker pivot plates using the following procedure:
1.
Open the glass panel to the full back position.
2.
Remove headliner trim lace and pull headliner loose at the side and back of the sunroof opening in the pivot plate locations. Refer to Figure 3 to
locate pivot plates.
3.
Tape underside of housing to contact rivet slug. Place tape over cable opening in track to prevent drill shavings from entering track.
4.
Use a 7/32" (5 mm) drill to remove only the head of the rivet, two rivets each side. Use caution not to drill through the housing or headliner.
Drilling through the housing may make the hole too large for the rivets supplied in the kit.
5.
Carefully knock out the rivet slugs and remove tape from underside of housing. Remove metal shavings and tape from top of tracks. Use of an air
hose to blow the drill shavings from the housing is not recommended as some shavings may be blown into the cable track.
6.
Remove two pivot plates by prying up to release plate from the track.
7.
Position the new pivot plate (from kit, P/N 12500028) onto the track lining up the rivet holes. The plates are identified as right-hand (RH) or
left-hand (LH) on the bottom side. Tap the plate with a hammer to seat it over the raised staking area on the track. Ensure that the plate is flush to
the track surface prior to riveting.
