Cutlass Supreme V8-307 5.0L VIN Y 4-bbl (1985)
Fluid Pump: Technical Service Bulletins
A/T - Pump Body/Fluid Leaks At Front Seal
SIL 89-3 (Feb)
THM 200-4R
SUBJECT: Pump Body
PROBLEM:
Fluid leaks from the oil pump body seal (front seal) may be created by movement of the pump body bushing.
If this condition is experienced1 a new oil pump body should be installed.
New pump bodies are now being produced with a machined step in the bushing bore.
The addition of this step is to prevent pump body bushing movement toward the seal.
