What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[Scrappycrow]

I have never had luck with that on modern, high pressure systems.
They always seemed to leak like crazy and you couldn't go but a few miles.

Unless you're putting significant load on the engine, you can leave the pressure cap loose or off and you'll have far less leakage. Yes, you obviously lose the advantage of pressurization, but so long as you have coolant (meaning not just water), you still have a margin before boil-over.

I've done this on a few vehicles, from an RV that developed in a tear in the upper radiator hose, to a BMW that had the upper radiator hose inlet break off the radiator (the hose couldn't hold onto the stub with pressurization, but held fine unpressurized).

 

[Scrappycrow]

@Scrappycrow Yes, these are the ones. Not any different as far as removal than the plastic ones.

View attachment 457460
View attachment 457461

Thanks, Y'all!

 

[89Suburban]

NOOO, you just seal off the heater hose lines in case of emergency, just like folding a garden hose in half

I keep a nipple and spring clamps in the truck just for this situation it it arises.

Link:

Amazon.com

 

[j91z28d1]

I have never had luck with that on modern, high pressure systems.
They always seemed to leak like crazy and you couldn't go but a few miles.

leave the cap on the first click so it doesn't build pressure.

limped a Ford work truck from baton rouge to Nola with just masking tape wrapped up the top radiator hose that way..

 

[Rocket Man]

I haven’t done much to the Tahoe (or any of the trucks) lately, just installed new JBL door speakers. At least one of the old Bose was blown, torn cone. The system sounds pretty good after dialing in the new Pioneer with the new speakers. The Bose amps in these aren’t bad, they just need better input than what the crappy sound of the stock head units provides. These speakers are 3 ohm and seem to provide a good balance in my truck. The old Bose speakers were 2 ohm in the front and 4 in the back iirc.

 

[Grady_Wilson]

leave the cap on the first click so it doesn't build pressure.

limped a Ford work truck from baton rouge to Nola with just masking tape wrapped up the top radiator hose that way

What was the ambient temp when you guys limped them home?
Until this last year, I lived in So Cal where 80+ degree weather was the norm, with 110+ in the summer.
You're not getting very far with a compromised cooling system.

 

[j91z28d1]

What was the ambient temp when you guys limped them home?
Until this last year, I lived in So Cal where 80+ degree weather was the norm, with 110+ in the summer.
You're not getting very far with a compromised cooling system.

honestly don't remember, but it wasn't windows down weather. it's not really temp hot down there, but humid as hell.

it was an f250 with a big belt driven fan and we weren't towing anything. no lack of cooling capacity for cruising along on flat interstate. thing could be half full of water and sitll be fine.

 

[Grady_Wilson]

From what I've read, higher humidity increases cooling ability of your car's cooling system, it doesn't hurt it.
So, warm, dry air is much harder on your car's cooling system.