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Thread: Tahoe Leaking Coolant
12-06-2012, 06:19 PM #11
New ones won't hurt at all, good insurance.
You can usually tell the condition by feel, a new hose will be firm through out it's length a questionable hose will feel soft and mushy.Ray
'09 Avalanche LTZ - Black
'05 Envoy XL (sold)
12-06-2012, 06:25 PM #12
Here's the pics after I removed the shroud. I also took pics around the water pump because I cant tell if it may also have a leak from a gasket. All new parts minus the radiator will be AC Delco. Well bringing it to operating temp the truck didn't start cooling its self until after 210 so I think the thermometer is done.
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1996 Chevy Tahoe LT 5.7L V8 4X4 202,000+ 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
12-06-2012, 06:32 PM #13
There is some rust around the water pump, but (from here) it looks dry, the wet areas seem to be around the rad.
That rad looks like it's still in good shape, but (unlike the old copper) if it's leaking, it can't be fixed
12-06-2012, 06:51 PM #14
I don't have a problem replacing it because it is easy to do and heck I get a new part out of it. There is surface rust on the water pump, but it still looks solid. It looked damp but might just be the weep hole.
My total on amazon for parts is $213.82 and free 2 day shipping for all but the radiator.
Coolant hose $20.89
Coolant hose $11.59
Coolant hose $23.58
Block heater $17.84
Radiator cap $11.93
Coolant temp sensor $14.47
Coolant will be $15.99 a gallon
Total will be like $265 which isn't bad.
Last edited by Conlan Rose; 12-06-2012 at 07:09 PM.
12-06-2012, 09:52 PM #15
I've never done the temp sensor or thermo and don't even know where they live, as I'm somewhat engine stupid. PM me instructions on where to look. I know they go bad and are cheap, so it'd be nice to know where to find the thing, as I'll probably pick up a spare given my 143k miles.
Oh, and when I did my radiator I was shocked at 16 bucks a gallon for unmixed coolant. When the heck did it get so expensive?! (I was appalled at mixed coolant going for 14 bucks a gallon; it's half water!)
12-06-2012, 09:59 PM #16
12-07-2012, 10:53 AM #17
- Join Date
- Feb 2010
- Lucedale, MS
- Blog Entries
My Mom's 95 Sierra the thermostat is on the engine side of the top radiator hose under the goose-neck that the hose connects to. On mine "2002 Silverado with the 5.3" it is on the engine side but the bottom hose. I hope this helps.....
12-07-2012, 10:57 AM #18
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 http://www.gmtruckclub.com/forum/sho...5-GMC-Yukon-XL
2002 Silverado ext cab 2wd (Sold)
2003 Yukon XL (Totaled)
12-07-2012, 02:40 PM #19
12-07-2012, 02:53 PM #20
That is it. That is the thermostat housing. Just unbolt it, Make sure that you pay attention to how the old tstat is in you don't want to put the new one in the wrong way, clean up the housing really well, clean up the engine surface well, Put some rtv on both surfaces, a new gasket and bolt it back together. Really should take an hour at most including flushing it. When you have the thermostat out you can run your garden hose thru the radiator. It will flush a lot of the crap out of your motor because no thermostat is holding the water back. After you get clean water coming out, put your new tstat in and refill the radiator with straight coolant. When I worked in the garage we would do the flush until clear water came out of the motor. Then we could drain the radiator and fill it with straight coolant. The Water in the motor will mix with the straight coolant and give you a 50/50 mix.
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