GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Buick
🢒
1997
🢒
Riviera
🢒
Engine
🢒
Engine Mechanical - 3.8L
🢒 Coolant Outlet Housing and Thermostat Removal
Remove the engine coolant temperature sensor wiring harness from the stud.
Remove the coolant outlet housing bolts.
Remove the coolant outlet housing.
Remove the gasket.
Remove the thermostat.