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  1. #11

    Default

    It is right handed. I ended up making a tool out of an old carpenter's square. It worked for me and then my dad used it a week later and it worked for him.

    1995 Silverado 4x4
    6" BDS Suspension Lift-3" Body Lift-Add A Leaf in rear -Trailmaster SSV Shocks-Duel Steering Stabilizer Kit -AirAid Cold air intake-
    4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge

    2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system, Russell Braided SS brake lines, PowerStop Brake pads, PowerStop cross drilled and Slotted Rotors, http://www.gmtruckclub.com/forum/sho...5-GMC-Yukon-XL
    2002 Silverado ext cab 2wd (Sold)
    2003 Yukon XL (Totaled)

  2. #12

    Default

    Ok I rented the Advance cooling system tester kit today. Had to pay a deposit of $180. It is refundable so that's okay.
    I will try to pressure test tonight and hopefully find the leak.

    Click image for larger version. 

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    The orange cap on the kit's upper case cover, bottom left, fit nicely on the expansion tank pressure cap. The cap is rated at 15 psi, so I pumped the cooling system up to 15 psi. Let it sit for 30 minutes, I found the slow coolant leak running down the front driver side of the block behind the power steering pump bracket. There were 2 coolant droplets on the floor directly under the power steering pump. Pressure dropped to 10 psi. It could be the WP or the gasket. I will go ahead and get a new WP and replace it this weekend.
    Click image for larger version. 

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    2011 Chevy Silverado LT 4WD 25k miles
    2001 Suburban 2WD, 5.3, V8 176k miles
    1993 964
    1996 318TI

  3. #13

    Default

    Well I pressure tested the cooling system and the leak showed up. I am very sure now it is the water pump gasket to the block. The water pump has no play on the bearing and no leakage in the front or weep hole. Leakage is from the gasket to block.

    AC Delco WP is $180 and Advance is $120. Any negatives on the Advance WP?


    Pictures.
    1. Pressure tester
    2. Font of engine without clutch fan
    3. WP leak at front of cyl 1-3
    4. Coolant leak wet spot undder the WP on pass side
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    2011 Chevy Silverado LT 4WD 25k miles
    2001 Suburban 2WD, 5.3, V8 176k miles
    1993 964
    1996 318TI

  4. #14

    Default

    Go on amazon you can get a water pump for almost half that and it will be AC Delco! Just go the the automotive department, put in your vehicle and find it in replacement parts.

    - - - Updated - - -

    http://www.amazon.com/ACDelco-251-74...1&s=automotive

    Here is one I found it has a better review than the other Delco pump.

    1996 Chevy Tahoe LT 5.7L V8 4X4 205,000+ miles. Built proudly at Janesville Assembly in Janesville, Wisconsin
    Basic mods: Lights all over, bunch of electrical work, and a couple cooling mods.

    Check out my other mods in My Garage: http://www.gmtruckclub.com/forum/sho...t-Tahoe-4-Door

  5. #15

    Default

    Quote Originally Posted by Conlan Rose View Post
    Go on amazon you can get a water pump for almost half that and it will be AC Delco! Just go the the automotive department, put in your vehicle and find it in replacement parts.

    - - - Updated - - -

    http://www.amazon.com/ACDelco-251-74...1&s=automotive

    Here is one I found it has a better review than the other Delco pump.
    Thanks Conlan for the link.

    I think I want to pull out the water pump first and look at the sealing surface and gaskets. It is possible it was just a gasket issue. The water pump shaft and bearings have no play at all. I may be able just to get the gaskets for the two machined surfaces behind the water pump.

    Click image for larger version. 

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    2011 Chevy Silverado LT 4WD 25k miles
    2001 Suburban 2WD, 5.3, V8 176k miles
    1993 964
    1996 318TI

  6. #16

    Default

    Btw, well doing this before you remove you should flush the coolant with a product like Prestone Super Flush so it cleans out all the contaminants in the system. You can get the gaskets at any auto parts store usually. I feel bad that your water pump is so much... Mine is only $43 on amazon for the Delco.

    1996 Chevy Tahoe LT 5.7L V8 4X4 205,000+ miles. Built proudly at Janesville Assembly in Janesville, Wisconsin
    Basic mods: Lights all over, bunch of electrical work, and a couple cooling mods.

    Check out my other mods in My Garage: http://www.gmtruckclub.com/forum/sho...t-Tahoe-4-Door

  7. #17

    Default

    Nothing wrong with the advance one. That is what I used. You can get 30% discounts by ordering on their site and picking up at the store. Just make sure you get the correct one. There are two different models with two different thermostat housings. It never fails that you get the wrong one the first time. I have been told by a few people to not use the gaskets included and spend the $8 to upgrade to the felpro gaskets. Buying on amazon is risky on this one. there are two different pumps that will fit your truck. Both will come up as a good match. One uses a 2 bolt thermostat housing and one uses a 3 bolt housing. I have changed these pumps before. I have spent half a day driving around trying to get the correct pump and a correct thermostat. I would not buy this on amazon, unless you you have another vehicle to use while you wait for the correct part to show up, if they ship the wrong one.

    - - - Updated - - -

    you can just buy the gaskets. There is also a kit that replaces the oring on the back of the pump.

    - - - Updated - - -

    1995 Silverado 4x4
    6" BDS Suspension Lift-3" Body Lift-Add A Leaf in rear -Trailmaster SSV Shocks-Duel Steering Stabilizer Kit -AirAid Cold air intake-
    4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge

    2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system, Russell Braided SS brake lines, PowerStop Brake pads, PowerStop cross drilled and Slotted Rotors, http://www.gmtruckclub.com/forum/sho...5-GMC-Yukon-XL
    2002 Silverado ext cab 2wd (Sold)
    2003 Yukon XL (Totaled)

  8. #18

    Default

    From what it looks like Delco only sells the 3 bolt one on amazon. In the description of the part it says to use the 2004 thermostat.

    1996 Chevy Tahoe LT 5.7L V8 4X4 205,000+ miles. Built proudly at Janesville Assembly in Janesville, Wisconsin
    Basic mods: Lights all over, bunch of electrical work, and a couple cooling mods.

    Check out my other mods in My Garage: http://www.gmtruckclub.com/forum/sho...t-Tahoe-4-Door

  9. #19

    Default

    Ok, I got sidetracked doing some errands. I will probably remove the WP tomorrow to inspect the gaskets. I have the 2-bolt thermostat housing.
    Jeez, the Felpro gaskets are $20 for two and $2 for the thermostat O-ring. That's almost $25 just for the gaskets and O-rings.
    I will just get the WP that comes with the gaskets.
    Pikey, what is wrong with the gaskets that come with the WP?

    Thanks guys.

    - - - Updated - - -

    Ok, got the water pump off. Had to remove the belt tensioner first, hoses then the WP.

    Look at the old wp, weep hole is dry. It was a gasket failure. The block machined surfaces got rusted from the coolant leak.

    Click image for larger version. 

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    - - - Updated - - -

    Question:

    What is the torque on the WP bolts?
    2011 Chevy Silverado LT 4WD 25k miles
    2001 Suburban 2WD, 5.3, V8 176k miles
    1993 964
    1996 318TI

  10. #20

    Default

    Cleaned up the block surface and installed a reman WP from Advance. Put 2 gallons of 50/50 Dexcool coolant.

    WP bolts torque is 21 ft-lbs.
    !st stage tightening sequence at 14 ft-lbs and final at 21 ft-lbs.

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    I also replaced the tensioner pulley. The bearing is very noisy.

    I ran the engine up to temp and cooled it down twice and top up with coolant.

    I checked the garage floor this morning and it is dry.

    Not too bad for a weekend repair job.
    2011 Chevy Silverado LT 4WD 25k miles
    2001 Suburban 2WD, 5.3, V8 176k miles
    1993 964
    1996 318TI

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