No oil cooler lines?

[HiHoeSilver]

No RPO for mine, I decoded them all and there’s nothing about the external oil cooler.

I think it's stock. I'm not sure there's an internal one in the radiator. Doesn't the crossover land at the very edge on top of the drivers side?

 

[Rocket Man]

I think it's stock. I'm not sure there's an internal one in the radiator. Doesn't the crossover land at the very edge on top of the drivers side?

IDK to be honest.

 

[HiHoeSilver]

@Rocket Man
@alpinecrick

You can see the lines go right past the radiator to the oil cooler mounted in front.

 

[alpinecrick]

Yup. Me too. I don't think there's even an rpo for it. The trans cooler has one though, and it's AUX, not external.

KNP - HD AUX TRANS. COOLING SYS

This rpo refers to the the one outside of the radiator.

View attachment 220305

The tall, skinny cooler on the drivers side looks suspiciously like the power steering coolers I robbed off of GMT 800 Suburbans and are now residing on my two GMT 400 pickups........?

 

[Rocket Man]

The tall, skinny cooler on the drivers side looks suspiciously like the power steering coolers I robbed off of GMT 800 Suburbans and are now residing on my two GMT 400 pickups........?

Hmmmmm...

 

[HiHoeSilver]

The tall, skinny cooler on the drivers side looks suspiciously like the power steering coolers I robbed off of GMT 800 Suburbans and are now residing on my two GMT 400 pickups........?

You're so right. I forgot all about that. @Tonyrodz, yours was leaking, right?

Hmmmmm...

 

[Rocket Man]

You're so right. I forgot all about that. @Tonyrodz, yours was leaking, right?

I stand corrected. Now I remember what that thing was even though I only found out through @Tonyrodz. I remember thinking it was an oil cooler at one time. Man Im getting old, losing my memory.

 

[alpinecrick]

One giveway is trans and power steering coolers will have 3/8" lines, while engine oil lines will be 1/2". At least on the GM trucks...........

 

[Rocket Man]

One giveway is trans and power steering coolers will have 3/8" lines, while engine oil lines will be 1/2". At least on the GM trucks...........

I never really paid attention to it other than it was almost in the way of my intercooler I was installing. I wanted my Whipple installed!

 

[Chrismnj]

The tall, skinny cooler on the drivers side looks suspiciously like the power steering coolers I robbed off of GMT 800 Suburbans and are now residing on my two GMT 400 pickups........?

it is, engine cooler is in main radiator on the driver side, radiator with engine cooler is about 1" thicker.