Radiator for Tahoe with K5L

[Flashpd]

I have a 2013 Tahoe LTZ 4wd with the K5L Heavy duty cooling package. The radiator is leaking and I’m about to pull it and replace it but not sure if that K5L requires a specific radiator or if a standard with transmission and oil cooler connections will do?

 

[gooffeyguy]

I'm pretty sure the radiator is the same

Where is it leaking at? Sometimes the fittings on the side tanks going to the internal trans and oil coolers can loosen and cause leaks

 

[Flashpd]

I'm pretty sure the radiator is the same

Where is it leaking at? Sometimes the fittings on the side tanks going to the internal trans and oil coolers can loosen and cause leaks

Hard to tell but it appears to be the drivers side end of the radiator, but it doesn’t look like it is coming from a fitting.

 

[Flashpd]

Looking on Advance Auto the only radiator that mentions that it’s for the K5L is the AC Delco 21742, which is also the most expensive one at $614

 

[gooffeyguy]

Looking on Advance Auto the only radiator that mentions that it’s for the K5L is the AC Delco 21742, which is also the most expensive one at $614

RockAuto has that one for $476 and they always have a 5% discount code

 

[gpracer1]

They seem to like to crack on the driver side near the upper hose. Mine is K5L and after seeing the price I just went with all aluminum. So far works great in 115 degrees. Will be able to test in mountain driving Saturday, will check how it handles full throttle up the mountains to Prescott.

 

[Foggy]

I'm confident that IF it has the trans cooler lines (they all do) AND the oil cooler then
they are all the same.. You should be able to find it for around $200+

 

[Foggy]

GM GENUINE 21650 {Click Info Button for Alternate/OEM Part Numbers} Economy Info FLEX Fuel; Exc. Enhanced Cooling Package (K5L); CORE SIZE 34 IN X 18-1/2IN X 1-1/16IN; w/ RPO Code APC,ASA,ATS,ADP,DEG,FAA,CAL,AJN,BBL,CCM,AAF4,0117; 6 Speed Automatic Trans.

$216.79

From the rockauto website

 

[gpracer1]

I believe that is NOT Including K5L, says exc.

 

[Foggy]

I believe that is NOT Including K5L, says exc.

Sorry... I hit the Wrong one... My mistake

 

[gooffeyguy]

The one compatible with the K5L has both a trans cooler and oil cooler

 

[swathdiver]

I have a 2013 Tahoe LTZ 4wd with the K5L Heavy duty cooling package. The radiator is leaking and I’m about to pull it and replace it but not sure if that K5L requires a specific radiator or if a standard with transmission and oil cooler connections will do?

21742 or 20935856

After all the problems we've seen on here with aluminum radiators lately, I'm sticking with GM OE when mine goes.

To avoid getting one that's been bounced around a Fed-Ex truck, I think picking one up at the local dealership would be better. Paying full price once in a while isn't unnecessary.