Cooling System: Locations

MAKE BLEED W/
MODEL BLEEDER FILL ENGINE SPECIAL
ENGINE TYPE LOCATION POINT @ RPM NOTICE

GENERAL MOTORS

1983-92 caps radiator & thermo - Fill through
All 4-cyl. 1.8L, thermostat thermostat housing
2.0L OHC; 2.5L housing until coolant reaches
W/thermostat top of radiator neck.
twist cap Recheck cold

1984-85 FIERO caps radiator & thermo 2000 Fill through
thermostat thermostat housing
housing until coolant reaches
top of radiator, replace caps. Run engine for three minutes and then fast idle for 15-20 seconds. Top off through thermostat housing

1986-88 FIERO caps radiator & radiator off Fill cooling
thermostat system through
housing radiator until full.
Replace cap and run engine until warm. Add coolant through thermostat housing as needed

1987-89 V6 2.8L valve thermostat radiator off With high-mounted
FWD ex. Century, housing by-pass hose (above
Celebrity, Ciera, radiator), also
6000 remove hose from
pipe

1986-87 V6 3.0L, hose heater radiator 3000 Rev to 3000 RPM
3.8L Electra, outlet & top off
LeSabre, 88, 98,
Bonneville

1989-92 V6 3.1L valves 1. thermostat radiator off Close valves when
ex. Century, housing coolant flows from
Celebrity, 2. throttle vent, continue filling,
Ciera, 6000 body idle engine to
return operating
pipe temperature and top
off

1991-92
V6 3.4L valves 1. thermostat radiator off Fill through
housing radiator neck until
2. heater full. Allow system to
inlet stabilize and add
pipe coolant as needed.
Install radiator cap and close air bleeds. Fill coolant reservoir to proper level

1988-91 - - radiator - With AC on, rev
V6 3.8L Code C, engine to 3000 RPM
1989-90 V6 3.3L at least five times to
purge trapped air

1991-92 3.8L plug thermostat radiator idle Turn AC on, temp.
Code L, 1 housing on high. Rev engine
to 3000 rpm five times and slowly open air bleed

1992 5.7L
Code P screw 1. thermostat radiator off -
Corvette housing
2. throttle
body

Cadillac, all - - radiator - Run engine at
FWD V8 2000 rpm for 10
minutes with cap off