Bulletin Information

Bulletin Title: #99-06-02-012D - Rust in Cooling System, Heater Inoperative, Blows Cold Air, Engine Overheats (Flush Cooling System) - (Apr 9, 2002)
Bulletin Type: Technical
Applies To: Engine Cooling

#99-06-02-012D - Rust in Cooling System, Heater Inoperative, Blows Cold Air, Engine Overheats (Flush Cooling System) - (Apr 9, 2002)

Subject:
Rust in Cooling System, Heater Inoperative, Blows Cold Air, Engine Overheats (Flush Cooling System)
Models:
1996-2000 Chevrolet and GMC S/T Models (Blazer, Jimmy, Sonoma, S10 Pickup)
1998–2000 GMC Envoy
1996-2000 Oldsmobile Bravada
with 4.3L V6 Engine (VINs W, X — RPOs L35,...

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Document Tags

Document Title: #99-06-02-012D - Rust in Cooling System, Heater Inoperative, Blows Cold Air, Engine Overheats (Flush Cooling System) - (Apr 9, 2002)

rust

cooling

system

heater

cold

engine

flush

bulletin

additional

condition

coolant

reservoir

cool

have

time

level

using

repair

that

parts

equipment

listed

prestone

obtained

local

used

repaired

this

procedure

heavy

duty

cleaner

vehicle

neutralizer

available

thermostat

radiator

funnel

opening

products

important

fuel

should

normal

position

following

drain

temperature

water

order

achieve

results

cleaning

flushing

damage

install

scan

tool

allow

monitoring

caution

pressure

considerably

higher

boiling

solution

causing

boil

removal

instantaneously

possibly

explosive

force

spewing

over

fenders

person

removing

achieved

remove

properly

operating

start

from

three

flow

stop

exchanger

equivalent

manufacturer

exchanging

place

exchange

mixture

runs

clear

clean

recovery

bottle

hose

disconnect

core

after

exceed

reinstall

tighten

fill

clamp

upper

belt

attach

minutes

turn

open

pump

crossover

bolt

close

approximately

warm

pour

dime

closed

throttle

screw

idle

imperative

pockets

removed

effective

stabilizes

when

point

reached

hour

labor

cover

speed

will

loosen

safety

step

flush cooling

cool coolant

prestone heavy

duty cooling

system cleaner

coolant temperature

pressure cooling

temperature considerably

boiling temperature

solution radiator

radiator causing

causing solution

removal radiator

pressure solution

solution boil

boil instantaneously

spewing solution

solution over

engine fenders

remove radiator

start engine

coolant flow

coolant exchanger

system coolant

water runs

coolant recovery

heater core

install radiator

upper radiator

radiator hose

hose radiator

system minutes

turn engine

radiator drain

water pump

throttle stop

stop screw

important imperative

operating temperature

normal operating

labor time

loosen radiator

obtained local parts

prestone heavy duty

heavy duty cooling

duty cooling system

cooling system cleaner

caution pressure cooling

pressure cooling system

temperature considerably higher

higher boiling temperature

solution radiator causing

radiator causing solution

boil removal radiator

pressure solution boil

solution boil instantaneously

boil instantaneously possibly

force spewing solution

spewing solution over

engine fenders person

conditions engine coolant

engine coolant combustible

appears coolant flow

available coolant exchanger

cooling system coolant

water runs clear

hose coolant recovery

coolant recovery bottle

disconnect upper radiator

upper radiator hose

radiator hose radiator

properly position hose

position hose accessory

hose accessory drive

accessory drive belt

pulley belt cannot

belt cannot touch

cannot touch hose

coolant exchange equipment

attach garden hose

water flush cooling

system minutes water

minutes water runs

start engine flushing

engine flushing cooling

system five additional

five additional minutes

radiator drain drain

remove lower water

lower water pump

water pump crossover

close radiator drain

conditioning maximum cool

maximum cool position

closed throttle stop

throttle stop screw

hours after normal

operating temperature cooling

temperature cooling system

cooling system achieved

normal operating temperature

operating temperature coolant

temperature coolant temperature

obtained coolant temperature

scan tool determine

tool determine when

this point reached

point reached temperature

reached temperature been

reached start clock

start clock periodically

clock periodically every

periodically every twenty

every twenty minutes

monitor coolant temperature

coolant temperature engine

hour time hour

time hour actual

time cover time

cover time spent

time spent monitoring

spent monitoring engine

order achieve constant

achieve constant temperature

procedure maintain idle

maintain idle speed

remove dime closed

following procedure listed

loosen radiator drain

cooling system minutes

install upper radiator