Coolant leak time for a radiator...

[rdezs]

The 90 degree ones come off the rear heater core, right behind the right rear tire. The aluminum ones look good. Considering where they live behind the tire, it's a good option. You will need two. Look online, they're readily available for between 15 and $20 each. About 5 or 6 feet of heater hose....5/8", go with a good quality hose. The other fittings and instructions are in the above link I think. Everything's available on Amazon.

 

[petethepug]

I found best deal for radiator on Amazon GM Factory store in like new section. It arrived damaged and they only offered refund, not replacement. Ended up paying full price for replacement, keeping it, then returning damaged one to Amazon for full refund. Eat Cake Amazon.

Replaced radiator, added Gates Acc, a/c & pulley kit and H2O pump. Had already replaced heater T’s. Sugg doing coolant resv also. There’s no sensor on gmt900 for low coolant level.

All Denali have heat exchanger in radiator as well as external cooler in front of a/c condenser.

Be careful if access belt or coolant fails, motor overheats. When motor must be shut off at speed to save it (30-45 sec) you lose brakes and steering because it provides 80-90% of energy to control truck. Our 09 Esky blew through red lights exiting a hwy and barely managed a turn 4 lanes wide.