transmission and coolant flush

[irondiezl3]

2004 gl2 3400 wondering if anyone knowes where to get detailed instructions on how to flush both coolant and transmission? i searched didnt fand any though? how much of each liguid do i need for them? thanks for help.

[AGT]

If you want to actually flush the coolant or tranny fluid you better have to machine. Otherwise you will not get out all of either.

[YALEROYNOT]

brother is general manager at jiffy lube I get it done for free :lol: and a full synthic oil change for $15 :lol:

[irondiezl3]

damn i wish im about to attempth the fuel filter im nervous because im not relieve any pressure beforehand :/

[AGT]

damn i wish im about to attempth the fuel filter im nervous because im not relieve any pressure beforehand :/

Don't worry about the fuel pressure. Just be ready with a vise grip pliers and possibly something to plug the line. You will lose a little fuel but not much.

[MilzyZ34]

2004 gl2 3400 wondering if anyone knowes where to get detailed instructions on how to flush both coolant and transmission? i searched didnt fand any though? how much of each liguid do i need for them? thanks for help.

The coolant flush is pretty straight forward. For a full flush, I would flush the radiator, heater core, engine, and resevoir. Just drain the whole system, and disconnect the radiator and heater hoses. Then flush each piece individually by running a waterhose to the upper hose and letting the water flow until it comes out clear. then just drain out all the water. Repeat for each of those 4 things. When completely empty, 2 gallons of pure Dexcool will be more than enough to fill everything back up when you dilute it 50/50.

I would advise against the trans flush completely. If the trans needs serviced, I would just drop the pan and change the filter. A pan drop will usually need about 8-9 qts to fill everything back up. The 4t45e doesn't have a dipstick, but does have a drain on the passenger side to check the level.

[Ryan from Ohio]

When I do a coolant flush I simply drain the coolant at the radiator. I also pull the upper radiator hose off. I insert the sprayer nozzle into the hose and squeeze it as tight as possible and power flush it out.

Then I put the Prestone flush in, fill it up with water and follow the directions on the bottle. ;) Hint

After flushing I Put some water through just like in my first paragraph. Until its clean and clear. Let it drains fully.

I do not nor will I ever use that Dexcool crap. its the devil.

[MilzyZ34]

When I do a coolant flush I simply drain the coolant at the radiator. I also pull the upper radiator hose off. I insert the sprayer nozzle into the hose and squeeze it as tight as possible and power flush it out.

Then I put the Prestone flush in, fill it up with water and follow the directions on the bottle. ;) Hint

After flushing I Put some water through just like in my first paragraph. Until its clean and clear. Let it drains fully.

I do not nor will I ever use that Dexcool crap. its the devil.

That wouldn't flush the engine or heater core though.

In my professional opinion, Dexcool gets a bad rep. I wouldn't necessarily leave it for 100k+ miles, but if maintained on a somewhat regular basis, there is absolutely nothing wrong with it. The reason Dexcool is used is because the glycol coolant is corrosive to aluminum, and most of the parts in the newer engines that coolant runs through is made of aluminum.