Chevy and GMC Duramax Diesel Forum banner

1 - 20 of 61 Posts

·
LHN...We ARE the Joneses
Joined
·
26,485 Posts
Discussion Starter #1 (Edited)
If you’ve never removed your front grill, it’s quick/easy. Remove the top core cover, remove your headlights, and with a flat blade screwdriver, depress the spring clips to remove. Once you’ve done it before, it takes less than 5 minutes to remove.

There are a variety of paths to choose from in adding a Power Steering Fluid Cooler.

One choice (thx Eric!) is to obtain and add the GM part # 10385584 ($130) for the 6.6L.

Or you can choose GM part #15295847 ($80) for the 8.1L and adapt it to fit.

Both mount here, utilizing the condenser coil’s top mounting bolt with an added bolt (#11589039, $1.50) to an existing hole in the trans cooler bracket.


Edit: I see that Dorman offers a kit now that looks similar to the stock GM kit, and how it mounts up front....$48 More Information for DORMAN 918301

In pursuit of lowering the price further, look around fleaBay and Amaz and there are numerous kits available in various sizes that could fit in the same area as the GM shown above.
This one is a bit smaller;

Derale 13200 Power Steering Cooler Kit


Not wanting to play the ship and wait game, pursue available inventory on a local basis.
These are cheap enough that you could bridge two together to equal the GM size for $40.

Hayden Power Steering Oil Cooler

I ended up with THIS cooler from VatoZone.
It was larger than the others and only $30.
It comes with a 4’ section of hose and 4 hose clamps. Add another 3’ piece of hose and 3-4 hose clamps to the mix, along with a double hose barb for the hose splice.
You’ll need 5 clamps total, unless you reuse the lame OEM spring clamp, and you might strip one out over-tightening. Better to have an extra than make a return trip in the middle of the project.


Lift the front corner up enough (tire on ground) to open up the tire well area and make it easier to access. Remove your Driver’s side inner fender liner. You can try and work around the boost tube, but it’s easier to just remove it and give your self some room.

This is the location where the Low Pressure return line, coming from the steering box below, attaches to the PS pump inlet tube.

2.
2.

Looking down from the top, running over the boost tube, here is (with PS fluid spilled on it :rolleyes:) the new 4’ return hose (included in the kit) attached at the PS pump's inlet tube. Both hoses will route in the gap between the lower boost tube coupler and the ECM, thru existing holes in the core support, below the DRL/Turn fixtures.



This is looking down in the space between the battery/washer fluid/core support, the 3' hose from the cooler joining the existing return line from the gear box (see blue lower boost tube boot) that we removed from the pump inlet tube. I'm anal, :rolleyes: I used 4 clamps but 2 will work.



The kit came with a self-adhesive isolator pad that was the same width as the bracket up front and I already had some black plastic zip ties to affix thru the existing holes.




Dust it with a light coating of flat-black enamel paint to hide behind grill in darkness.



Start up, move the wheel back and forth a few times to displace the air in the lines, then fill PS reservoir to proper level. Re-install the Grill and both headlights, and we're done. :D
 

·
Registered
Joined
·
71 Posts
Nice!
 

·
Registered
Joined
·
24 Posts
thanks for the write-up. sub'd.
 

·
Registered
Joined
·
2,500 Posts
Thanks for the write-up, and the link in that other thread. I was unaware of this mod, and it's a cheap one I could do easily.
Do you know how much that cooler changed the fluid capacity of the system?
 

·
LHN...We ARE the Joneses
Joined
·
26,485 Posts
Discussion Starter #6
No I don't.
I was in replacing one of the High Pressure lines that was leaking, started up to cycle fluid, then added back to the proper level. At most, the amount to fill the reservoir back, so maybe 12 oz.?
 

·
Registered
Joined
·
107 Posts
Thanks for the writeup and pictures.... I'll get to this one of these days.

Sent from AutoGuide.com Free App
 

·
LHN...We ARE the Joneses
Joined
·
26,485 Posts
Discussion Starter #9 (Edited)
So is this how to do it? I can't figure it out unless I see a diagram.
Sorta.....you need more lines in the diag.

Pump > HB = High pressure (HP) line (Item 12 below)
HB > pump Reservoir = Low pressure (LP) return line (Item 1)

HB > Steering Box = HP line (Item 4)
Steering Box > pump Reservoir = LP return line (Item 6).
THIS^^^ (LP return) is where you splice in the cooler lines.

Pic courtesy of C20
 

·
Registered
Joined
·
90 Posts
sub
 

·
Registered
Joined
·
90 Posts
with adding this cooler , could you add a filter in the cooler outlet line back to the PS pump, i see other have install filters ( link ) in the Hydro boost return , would,nt you have more flow at the pump return Pro,s / con,s

Having a hard time finding this inline 3/8 magnefine power steering filter in Alberta , you would think Napa , bumper to bumper or someone would have this ?


Power Steering Filter - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 

·
LHN...We ARE the Joneses
Joined
·
26,485 Posts
Discussion Starter #13
Some have added them. While researching for the PS cooler, I found a notation where GM recommends against adding a filter.

Not really sure where the benefit of an inline filter comes into play
 

·
Registered
Joined
·
6,230 Posts
Research a little more about the Magnefine brand filters, I read a bit and there seemed was an issue with knock-offs just like the Magnefine having problems and subsequently some rebuilders/manufacturer to dealer stopped recommending a filter after replacement of a hydraboost, transmission, power steering pump etc..
 

·
Registered
Joined
·
295 Posts
subbed
 

·
Registered
Joined
·
295 Posts
just ordered some magnefine filters. It seems like you would need to put one in the HB return AND the steering box return right?
 

·
Registered
Joined
·
57 Posts
Does anyone have the dimensions of the factory GM 6.6 cooler?
 

·
Registered
Joined
·
674 Posts
So to verify the cooler just goes in line with return hose from the steering. Essentially add a barbed coupler, extend the hose to the cooler then run from the cooler back to the return of the steering to the pump.
 

·
Registered
Joined
·
674 Posts
Bumping this and hoping someone knows what size barb to buy?


So to verify the cooler just goes in line with return hose from the steering. Essentially add a barbed coupler, extend the hose to the cooler then run from the cooler back to the return of the steering to the pump.
 
1 - 20 of 61 Posts
Top