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2000 gmc safari no power steering&brakes
12-24-2013, 07:12 AM
Post: #1
2000 gmc safari no power steering&brakes
both the power steering and brakes went out at the same time not sure if gmc used the hydra-boost on that model or year haven't gotten to it to fully look at it all I know is there was low fluid whine when you turned but reservoir was full of fluid and still did it and now nothing

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12-24-2013, 10:43 AM
Post: #2
RE: 2000 gmc safari no power steering&brakes
I have an old Chevy truck that has hydraulic assist brakes that are powered by the power steering pump. If the belt brakes, pump fails, or fluid leaks out I loose both power steering and power brakes. Instead of guessing, just look at the master cylinder. If it has lines from the power steering pump going to it instead of a vacuum line, it is hydraulic.

Let us know what you find and we’ll go from there.

Thanks for using the forum,
Garner

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12-24-2013, 05:33 PM (This post was last modified: 12-24-2013 05:38 PM by Rupe.)
Post: #3
RE: 2000 gmc safari no power steering&brakes
Garner is correct, that year is hydro-boost. Good chance the PS pump has failed. Have fun replacing it!

Replacement PS pumps come with and without the "can" so ask for one with the can to reduce the possibility of leaks.

That said, you need to remove the fan shroud, the fan, the fan belt, and then use a pulley puller to gain access to the mounting bolts. There's also one hidden bolt behind the pump to the side of the engine. (recalling 5/8"or 15 mm) Do NOT remove that one, just back it off maybe 3 turns. (the bracket has s slot) Remove the pressure hoses from the PS box and the booster unit. Disconnect the low pressure line on the side of the pump (with the squeeze clamp) and catch the fluid. At that point remove the 4 bolts for the AC so it's floating free. Then remove the 3 or 4 nuts / bolts going straight into the front of the block so you can slide the aluminum bracket forward. When it's half way off you can drop the pump out the bottom with the 2 pressure hoses still attached.

Once everything is on the bench you can swap stuff over, including the pressure hoses. Sure beats trying to get them on while in the car!

BTW, there's a spring in with the pressure relief valve. Don't let that fly across the room and watch the direction of everything going back together.

If you have no snags and all the right tools the job will take you 3-4 hours as a novice.

Merry Christmas!

Edited to add: Removal of the fan... it's screwed onto the water pump shaft so with the fan belt in place to kinda hold things, fit a large adjustable wrench on the hex portion and smack it a few times with a dead blow hammer. Watch your fingers and repeat. It will come off after a few tries.
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12-26-2013, 08:50 PM
Post: #4
RE: 2000 gmc safari no power steering&brakes
ok that was going to be my next question was how to get the pulley off and the hoses look like I am going to have to do the swap on the vehicle but will see as I start digging, I was figuring 3 to 4 hours

and how big of a pulley puller will I need, will a 6" be big enough


and wow do I wish it was summer time

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12-26-2013, 10:19 PM (This post was last modified: 12-26-2013 10:21 PM by Rupe.)
Post: #5
RE: 2000 gmc safari no power steering&brakes
Go back and read my last post again. One hose on the side of the PS pump is only held with a squeeze clamp. You can get that off with a pair of pliers. The pressure hose is easier to remove from the brake booster end and leave the other end attached to the pump till you get it out in the open. Some pumps have a 3rd hose so follow it and disconnect the end away from the pump them worry about it on the bench. So much easier that way.

For the puller, you need one specifically for a PS pump that will grab the center knob of the pulley. Any other type will damage things. The puller kit will have another special adapter to reinstall the pulley after the pump is back in place. You may be able to borrow or rent one for a few bucks. It's not something you will use often but priceless when you have it. Each vehicle mfgr uses different parts of the kit so if you decide to buy the whole kit ($75 from OTC?) keep track of the pieces and you will eventually use it again. It will also fit the vacuum pump pulley on some older GM diesels.

BTW, a 16 / 18 mm line wrench is handy to have as well. You don't want to round off those hose fittings.
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12-27-2013, 01:15 AM
Post: #6
RE: 2000 gmc safari no power steering&brakes
ok thanks I will let you know how it goes tomorrow

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12-27-2013, 10:38 PM
Post: #7
RE: 2000 gmc safari no power steering&brakes
ok so it has been a day wasted turning the fan the wrong way, I think ........ if the engine rotates standing in the front facing the motor it rotates counter-clockwise. then you need to turn the fan bolt counter-clockwise or clockwise? because it has not come off and had to give up for the day will reattempt in the morning.

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12-28-2013, 12:54 AM
Post: #8
RE: 2000 gmc safari no power steering&brakes
The fan is standard thread. (not left hand) Place your wrench on at the 12 o'clock position and hit it toward the passenger side. I use a 12 inch adjustable for this task, although there have been a few times when I gave things a shake with a flat punch (a long one) placed on the edge of the hex as if I was going to bang it off that way. One or two shots might get it going and help move the penetrating oil around. (you did squirt some on there, right?) Do this with the fan belt still in place. It helps hold things.

Going back together only needs a few taps as the engine rotation goes in the tighten direction. Standing in front the fan normally goes clockwise with the motor running.
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12-28-2013, 02:16 AM (This post was last modified: 12-28-2013 02:18 AM by tommyboy.)
Post: #9
RE: 2000 gmc safari no power steering&brakes
yeah I gave up and started tearing into it but I have a strap wrench to hold the pulley and that is what I figured out after I quit for the night that I was going the wrong way oh well always tomorrow

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12-28-2013, 12:16 PM (This post was last modified: 12-28-2013 12:16 PM by Garner.)
Post: #10
RE: 2000 gmc safari no power steering&brakes
Are you sure, Rupe? I thought that if you were standing in front; looking at the fan, it would be turning Counter Clockwise with the engine running. If it turned Clockwise it would unwind right hand threads, wouldn’t it? That’s why you smack the wrench Counter Clockwise.

Thanks for using the forum,
Garner

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