Jump to content

Leaking Fluids.....need Advice!

sahls01gmc

Recommended Posts

sahls01gmc Senior Enthusiast

sahls01gmc

Posted
Posted

My high mileage truck is starting to leak some fluids, and I need to know the best route to take.

 

 

First, my Master Cylinder is leaking by the firewall. There is fluid coating the firewall and also on the the inside of the wheel well.

 

Second, the power steering is leaking. The pump attached to the motor is ok, but the actual steering knuckle (sorry, can't think of what the steering column attaches to) is leaking, and there is quite a bit of play inside the part as well. Can I rebuild, or only replace?

 

Third, I have an intermittent coolant leak. It never leaks consistently, but every so often it decides to slowly leak from what seems to be around the water pump area. How much of a pain is replacing that? I don't have a pulley puller, what other "specialty" tools would I need to tackle this? Would it be worth it to replace the thermostat, hoses, and any other part of the cooling system?

 

 

If there's anything that you can help me with, I would really appreciate it!

 

 

James

jim brock Enthusiast

jim brock

Posted
Posted

Start by obtaining a repair manual (Haynes) for your model. Study the sections on replacing Water Pump and Master Cylinder. Sounds like these two will need to be replaced. If you are comfortable with your own skill level you should be able to handle these. The steering gear box removal may require a special tool to seperate the arm from the tie rod. Some parts stores loan tools like these or you may need to rent or buy one. The gear box seals could be replaced by a shop specializing in such work or you can replace it with a used (salvage), rebuilt, or new one. Check around for best prices.

txab Senior Enthusiast

txab

Posted
Posted

Depending on the age of your hoses and t'stat, it may well be time to change them. Been over 4 years?

sahls01gmc Senior Enthusiast

sahls01gmc

Posted
  • Author
Posted

Suburban, I will start there first with the manual and check repair methods. I'm more than comfortable with my skill level, I just don't have all of the specialty tools. Haynes manual the best, or should I reference more than 1?

 

txab, it has been over 4 years, and the truck has 200k miles on it.....with almost all original components. I just don't want to replace more than I need to, but I guess if I replace it all it can last another 200k!!!

 

 

Thanks for the great advice guys!

 

 

James

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,840
    Total Members
    8,960
    Most Online
    appletrav
    Newest Member
    appletrav
    Joined

  • Who's Online   1 Member, 1 Anonymous, 324 Guests (See full list)

  • Latest Articles

  • Posts

    • newdude
      2 speed transfer case optional now?

      By newdude · Posted

      This is a 1/2 ton thing ONLY.  All HDs 2020-2026 have the two speed transfer case, with Autotrac as an option.     1/2 tons 2019-2026, regular 4x4s come with a single speed case (no 4LO!), and trucks with Z71 ordered, or all Trail Boss trucks come with the 2 speed case.  2 speed case is also an option on WT, and is also standard on High Country.  
    • newdude
      Different requirements for oil filters?

      By newdude · Posted

      2013 5.3 still to this day calls for the PF48 filter.  Which as a 15psi bypass pressure.     There is a TSB, 17-NA-157 that talks about the PF-63 and PF-64 filters which have a higher bypass rating of 22psi.    TSB HERE - temp.xml   "Beginning in 2012, the oil pumps began to regulate main gallery feedback instead of pump out pressure. This means that the oil pump now does not begin to regulate until pressure is built up to the main gallery. This change reduces the amount of time it takes to provide oil to the engine bearing and lifters during extreme cold start conditions.  Main gallery feedback oil pump control systems are present on the following engine families which use Spin-on oil filters: Small Gas Engine (SGE), Large Gas Engine (LGE), High Feature (HFV6) Gen2 and Small Block Gen5 gasoline engines. These engines with the main gallery feedback oil pump control systems are factory built with an ACDelco® oil filters"   It also calls out what engines use those filters.  The gen 4 small blocks were not on that list (LMG, LC9, L9H, L92, L94, L20, L96).  Gen 5 small blocks use the higher pressure filter.          That all said...   Your 7045 Napa filter is the PF63 equivalent, with 22psi bypass.  You are already using the higher bypass pressure filter.  You CAN keep using it, you don't technically have to use it though.  
    • Grumpy Bear
      Different requirements for oil filters?

      By Grumpy Bear · Posted

      Do you know WHY the filter relief setting was increased to 22 psig?    When the new system goes into the second stage the pump volume ramps up considerably. It was found that the 15 psi filter bypass setting put the filter in bypass on a warm engine when the second stage was activated. Raising the filter bypass setting forced the filter to do what it designed to do. Filter. Preventing debris from circulating during high load, high rpm operation.    So next question is how did GM find this out? VLOM/lifter failures and a deep dive by Melling Corp.    Last question. Is it required? Look at it like this; a motor may be equipped with a rev limiter. But it only works if the set point in reached. That 22 psig setting only matters if the pressure differential across the filter media exceeds 15 psig during normal warm operation. Second stage kicks in around 3000-3500 rpm.    I can't answer your question because I don't know you and how you use the truck. But I think there is enough information here to let you decide for yourself. 😉
    • Coastie05
      give me some tips to make my truck look better

      By Coastie05 · Posted

      Go back to OEM wheels. 
    • newdude
      2020 Trailboss 6.2 replacement

      By newdude · Posted

      Probably not their first rodeo, so it should go as planned most likely.  Typically the service manager or tech doing the swap will put some seat time to shake it down after they get it all put back together.  We usually put 50-100mi before we hand them back so if something happens, its not after you get it.  A coolant leaks, oil leaks, a ground left off or loose, vibration, etc.     The new engines so far have been good?  There's been a couple that have popped out there again (the replacement engine) but most have been okay.  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...