Riviera V6-231 3.8L VIN C SFI (1989)
one or more undersized Input Shaft Oil Seal Ring(s) that seal the Input Clutch and 3rd Clutch feed holes. The transaxle may slip less in Reverse or
Manual Low (D1) ranges (due to boosted line pressure) than in Overdrive (D4), Drive (D3), or Manual Second (D2).
SERVICE ACTION
Disassemble the transaxle, remove the Shaft and Housing Assembly (626) and inspect the Input Shaft Oil Seal Rings (624) while in the grooves. The
rinqs should take up most of the groove width. If the ring(s) only take up about half of the groove width then replace them with rings from the package
listed under Service Parts Information. Follow procedures outlined in the 1989 Service Manual Unit Repair Section.
Important:
Inspect for burned Input and 3rd Clutch Plate Assemblies. Replace if necessary.
SERVICE PARTS INFORMATION
Part No
Description
8662959
Package, Overhaul Seals and Gaskets
(OK Input and 3rd Clutch Plate Assemblies)
8662960
Package, Overhaul Repair Complete
(For burned Input and 3rd Clutch Plate Assemblies)
Parts are currently available from GMSPO.
SERVICE NOTES
The Oil Seal Pings may be different colors. This is just a way to tell the difference between suppliers that make the same ring.
