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Any Power Steering pump replacement tips?

Discussion in 'General Chevy & GM Tech Questions' started by Pikey, Oct 18, 2012.

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  1. Pikey

    Pikey Moderator Staff Member 2 Years ROTM Winner 1000 Posts

    I am replacing my ps pump in my 2005 yukon XL next week. I can't stand the noise it is making, albeit you can only hear it in the cab. I don't think that I have ever done one. (at least that I can remember). Any tips? I am going to rent the pully puller from autozone so I can pull the pully off of the old one and press it onto the new one. Any tips/suggestions before I start this job? The lines are just clamped hoses so no worry about getting the lines started without cross threading. I bought an AC delco with reservoir, so I don't have to deal with switching that over. I have read that after install I should fill it and soin it by hand a few times to prime it. Any help is appreciated! Thanks.
  2. tbplus10

    tbplus10 Epic Member Staff Member 5+ Years 5000 Posts Platinum Contributor

    Sounds like you have all the information you need. Just make sure they include the new "O" rings, I've seen those missing from the package in the past and it isnt worth doing the job and not replacing a .05 piece to risk a leak.
  3. j cat

    j cat Rockstar 4 Years 1000 Posts

    I would replace the power steering fluid first . drain completely and refill. jack both front wheels off the ground after filling the system then start engine and slowly turn steering wheel left /right. then recheck level. I used prestone fluid with the seal conditioner.

    with a refill of the system when purging you do not want any force on the steering system.
    give it a few hundred milles and you should see a noise reduction. I had this occur many times before. I now replace the fluid after about 7yrs/80,ooomi.


    just recently my steering box was leaking. the input seal ISS to it . I got a repair seal kit for 8.oo. the old seal was not installed correctly . no leaks now. I saved a few hundred on that fix. 2000 SIL.4X4.
  4. Pikey

    Pikey Moderator Staff Member 2 Years ROTM Winner 1000 Posts

    All the fluid is new. I just had the gearbox and hydroboost brake booster replaced under warranty. So, I do not want to add any kind of conditioner to the system as everything else is new. They had to do the hydrobooster twice because the first one leaked. The noise came after the second replacement. I assume that the guy was in a hurry or busy and ran the pump with not enough or foaming fluid. That is why it is so noisy. I could have the pump repaired under warranty, but I have a $100 deductible and the new pump is $77. Plus, I prefer not to take it back to the guy and have him put a crappy reman not made for the hydroboost system on the truck. The reman companies seem to rebuild them all the same and show the same part numbers for trucks with hydroboost (7200 lbs) and trucks without. Where GM shows a different part number for each. @tbplus10 what o-ring are you speaking of? The hoses are slide on hose clamp style, so there is no oring on the hose fittings on the pump side, because there are no fittings.
  5. j cat

    j cat Rockstar 4 Years 1000 Posts

    many have had the steering box replaced with a remanufactured type to find that they just replace the seals and the metal gears are worn so they do fail quickly. now that you explained the noise It is reasonable to assume that the pump was run dry or not properly filled and purged of air causing the damage. the pump should be replaced with a new part to avoid any issues. the O rings would be on the threaded fittings that you may remove to replace the pump. when I removed my input shaft steering box bearing assy the hose had an O ring on the end of the threaded fitting. I removed two hoses.

    the prestone fluid with the seal condition does work to stop leaks if the seals are just shrinking. If the seals are damaged due to improper install then this is where they need replacing.

    I keep my vehicles for 10-17 yrs. and the only power steering leak was with the 2000 sil steering gear input seal leaking . as I mentioned before that was not installed correctly which is why it failed. I thought that possibly the input shaft was corroded causing the leaking but the shaft after using some polishing cloth was perfect. the seal however was very distorted from not being pressed into the housing correctly.

    I was surprised that the internal metal of the steering gear was very clean and no rustly stains.the metal was bright steel. but I do replace this fluid about 5-7 yrs .
  6. tbplus10

    tbplus10 Epic Member Staff Member 5+ Years 5000 Posts Platinum Contributor

    Some of the older pumps have a block that bolts to the pump for the fluid lines and behind the block there are normally "O" rings.
  7. Pikey

    Pikey Moderator Staff Member 2 Years ROTM Winner 1000 Posts

    oh, ok! I guess that my major concern is removing the pully and pressing the pully onto the new one. Yes I will have the tool and hope for a nice chamfer as a lead in on the new shaft so I am sure it is going on correctly, but it still concerns me.
  8. Crawdaddy

    Crawdaddy Thread Killer Extraordinaire Staff Member 5+ Years 1000 Posts Platinum Contributor

    Pulling the pulley off and reinstalling is going to be interesting. Try to avoid doing it on the truck, but if I remember correctly, you have to pull the pulley to get to the bolts for the pump. You may want to pull at least the top radiator fan shroud to give yourself better access. I didn't on mine and while I got it done, my hands and arms were scraped up a lot more as a result.
  9. Pikey

    Pikey Moderator Staff Member 2 Years ROTM Winner 1000 Posts

    Yes, I do have to do it on the truck to get to the bolts and to be able to get the pump off the mount. Luckily, my truck came from the factory with electric fans, so I have plenty of room and no shroud to remove.
  10. tbplus10

    tbplus10 Epic Member Staff Member 5+ Years 5000 Posts Platinum Contributor

    If you have problems with the chamfer on the pulley or the pump you should be able to dress it up a little with a file and not create any balance problems. Liquid dishwashing soap always makes for a nice slippery surface that dries off or wash's off easy if things dont slip on as easy as they should.

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