Riviera V6-231 3.8L VIN C SFI (1989)
Thermostat Gasket: Technical Service Bulletins
Cooling - New Thermostat Sealing Gasket
Bulletin:
89-6-3
Date:
Nov. '88
Ref. No.:
88-091A-6
Corp. Ref. No.: 806202R
SUBJECT:
NEW THERMOSTAT SEALING GASKET
MODELS AFFECTED: 1988-1989 VEHICLES EQUIPPED WITH A 3800 ENGINE (VIN CODE C)
NOTICE:
This bulletin supersedes bulletin 88-6-10 dated March, 1988, due to a change in production design. Please discard 88-6-10 and replace it
with this revision.
FIGURE 1
At the start of 1989 production, all 3800 engines will be assembled with a new rubber thermostat gasket. This gasket is assembled on the top side of the
thermostat and provides a seal to the coolant outlet. The previous paper gasket, Part Number 25534927, should not be used and replaced with the new
thermostat sealing gasket, Part Number 25535939.
