Water pump failed

[lspann3525]

The other day the tahoe overheated while running errands. We were able to limp it home being we were only 2 to 3 miles from home. But anyway as soon as I popped the hood I seen coolant coming from underneath the water pump. Long story short the propeller came off the shaft and the rear large plug on the back of the water pump came off. So I replaced it and filled with coolant.. No leaks from the engine but there was a leak in several parts on the passenger side leading to the rear of the vehicle. Is there a heater hose or something that routes on the passenger side frame area leading to the back?

 

[OR VietVet]

Vehicle info, unless it is a secret of course. You have a rear heater, right?

 

[lspann3525]

2008 Z71 yes rear heat

 

[Doubeleive]

Vehicle info, unless it is a secret of course. You have a rear heater, right?

These all have rear heat unless it has been blocked off on purpose
these are what you need, recomend oem as below

 

[lspann3525]

Thanks. The temp froze over the other night im assuming thats what caused all these issues. Still kind of cold working in my garage going to try to find some light and get under to see what has happened

 

[adventurenali92]

It could also be leaking from the plastic T in the coolant hoses where they come out of the water pump itself. The two hoses connect via a T and then connect to the water pump. It’s on the passenger side of the block down a bit lower. Mine sprang a big leak this past summer. Dorman makes a metal replacement T that I picked up from autozone.

 

[lspann3525]

It could also be leaking from the plastic T in the coolant hoses where they come out of the water pump itself. The two hoses connect via a T and then connect to the water pump. It’s on the passenger side of the block down a bit lower. Mine sprang a big leak this past summer. Dorman makes a metal replacement T that I picked up from autozone.

i'll check there as well. I found a small split in the metal lines that run under the passenger side of the frame. They seem to run from looks like heater core outlets all the way to the back. Damn! Is there a way to bypass the rear heat until I can find the metal lines

 

[lspann3525]

 

[lspann3525]

Can this be cut and replaced with heater hose and clamps. I am doubting they make replacement lines.

 

[OR VietVet]

They do make replacement lines somewhere or NOS is somewhere. For now, yes, cut and install hose and clamps. Make sure to use multiple clamps on each end. If you can, get band clamps for the hoses.

 

[lspann3525]

ok will try that. Trying to figure out the best way to cut

 

[j91z28d1]

if you can get a flaring tool on it, I've done that before. anything to keep it from sliding off and it will be fine. if not, yeah. double clamp and hope for the best.


you think it got below the antifreeze temp and froze the water? man this winter has been brutal

 

[Scrappycrow]

ok will try that. Trying to figure out the best way to cut

My first suggestion is a mini tube cutter like this one if you have the room to rotate it around. When using one of these, use multiple passes, only barely tightening to the point of resistance every couple of revolutions. This will cut the tube more cleanly and won't neck it down in the area of the cut, and will extend the life of the tool. Using cutting fluid helps to make the cut cleaner and extend the life of the tool as well.

 

[Doubeleive]

View attachment 419333

that sort of looks like it rubbed on something, if you have been running straight water I guess it could have split from freezing, but if you are using the correct mix of coolant it is good to -37.

 

[Foggy]

that sort of looks like it rubbed on something, if you have been running straight water I guess it could have split from freezing, but if you are using the correct mix of coolant it is good to -37.

I had a bit of an issue a few days ago !!
Engine Temp and everything fine warming up in the driveway, but no hot heat
Shut everything down and pulled coolant reservoir cap - was a tiny bit of slush at the top.
Let it sit for a few minutes and restarted... I did add some straight dexcool ....
Then all was good.
But whew, I think I got lucky... I generally run a 60/40 distilled water to dexcool
ratio..
We were -5 - -10 for several days with -30 windchill for a few days too...
Now I'm paranoid of my other several vehicles.

 

[Doubeleive]

I had a bit of an issue a few days ago !!
Engine Temp and everything fine warming up in the driveway, but no hot heat
Shut everything down and pulled coolant reservoir cap - was a tiny bit of slush at the top.
Let it sit for a few minutes and restarted... I did add some straight dexcool ....
Then all was good.
But whew, I think I got lucky... I generally run a 60/40 distilled water to dexcool
ratio..
We were -5 - -10 for several days with -30 windchill for a few days too...
Now I'm paranoid of my other several vehicles.

they sell a tester at the auto parts store that you can use to check the coolant freezing point, then you know if you need to adjust the mix or whatever.
looks like this but different name brands

vRadiator Coolant Water Tester Test Ethyl Glycol Anti Freeze Check Measure v X0十 | eBay

This Coolant Tester quickly checks the specific gravity of your engine coolant water and shows you whether you have enough anti-freeze (Ethylene Glycol) or Corrosion Inhibitor in your cooling system.

www.ebay.com

 

[lspann3525]

I got the heater hose added I was able to cut it with a Jack saw blade but it's still leaking on a portion of the heater line. I'm unable to pin point it. So I'm going to have to see if I can drop the line somehow. Looks like the runningboard/step is going to have to be removed?

. Can the rear heater be bypassed???

 

[Doubeleive]

I got the heater hose added but it's still leaking on a portion of the heater line. I'm unable to pin point it. So I'm going to have to see if I can drop the line somehow. Looks like the runningboard/step is going to have to be removed?

. Can the rear heater be bypassed???

the best way to bypass the rear would probably be to use the same year 1500 silverado heater line connections, they will not have a T it's just a straight connector that way you still have heat in front. it's possible the lines could be a different size though I have never really tried it myself never had a need
if worse came to worse the heater lines can be capped off entirely all they do is send warm coolant to the heater core and back, you would have no heat. In the summer the heater cores can help with cooling the engine even if the heater is not on, it's just additional circulation.

 

[lspann3525]

 

[lspann3525]

those 2 small metal lines to the left do those go to the rear heater core??