Factory power steering cooler? 1991 Suburba

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Clifford91

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Feb 20, 2024
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Location
Centra Valley, California
First Name
Andrew
Truck Year
1991
Truck Model
Suburban V2500
Engine Size
5.7L 350 cu. in.
1991 V2500 Suburban, TBI 350 with 4l80E Trans, for reference.

There is what appears to be a power steering fluid cooler/coil mounted underneath the radiator (See photos).

Does not have hydroboost. I can't find any diagrams or anything similar to this anywhere online. The hoses connecting it are crimped/banjo'd onto the cooler, so it's all one piece. Hose fittings are starting to leak so wanted to replace or repair. Was this a factory option?

Thinking I could take it to Napa and have them replace the soft lines and fittings.
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gmbellew

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Kansas city
First Name
glen
Truck Year
1990
Truck Model
suburban 1500
Engine Size
350
my 1990 v1500 suburban has that power steering cooler. it also has the extra oil and transmission coolers. it might have been associated with the towing package? about the only option available at the time, that my suburban does not seem to have, is the rear auxillary heater.
 

EADN20

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wyoming
First Name
shawn
Truck Year
1991
Truck Model
v2500
Engine Size
5.7
i just bought a sub and it's having the same problem i can't fine that cooler anywhere, did you find a solution?
 

EADN20

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Location
wyoming
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shawn
Truck Year
1991
Truck Model
v2500
Engine Size
5.7
i just bought a sub and it's having the same problem i can't fine that cooler anywhere, did you find a solution?
Well, I took mine off, cut The crimps off on each side, broke them apart pulled the hose off grinded down the tack weld so that the ends could be separated far enough apart to be put in a hose crimp machine had my local hydraulic hose shop put new crimps on and new hoses (the blue hose is MSHA certified and that’s what my local shop had for chemical resistant hose) Had a welder at my work Tack them back in place note it is aluminum, so make sure you can have someone weld aluminum or braise it without popping a hole through the line…… But if that is not an option for you, you can cut the crimps off with a small Dremel make sure to not go threw the hose. They are pretty fragile so you do not need to worry about cutting 100% of the crimps you can spread it apart very easily with a flat tip screwdriver. There will be two flares on each line the in and the out and you could clamp a hose onto it with a hose clamp it won’t look as clean, but it should function just fine
 

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Originalthor

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Location
Saskatoon Saskatchewan
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Scott
Truck Year
1989
Truck Model
Suburban
Engine Size
5.7
My 89 v1500 suburban has the same cooler and had a oil cooler. No secondary transmission cooler which I thought was wierd. I ditched the oil cooler on mine.

On the lines I don't trust any lines that come from a store these days and just take them to my hydrualics shop and they do ten times better then remans.
 

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