HD trans

[Cavalry]

My 84's RPO sheet has a 1VO2 heavy duty transmission. Whats so special about it?

 

[FWP]

There's a site that lists those codes, but I can't remember what it's called.... I thought I saw a post awhile back about this, search and see. Maybe bring it back to the top or post if you find it. I'd like to bookmark it. Thanks.

 

[HarryH3]

I think that there just wasn't enough room for the entire description. That sounds like the RPO number for the Heavy Duty Transmission Cooler. It nets you a larger tranny cooler inside the radiator.

<font color=black>HarryH3 - '75 K5</font color=black>
http://ThunderTruck.ColoradoK5.com

 

[Cavalry]

I'm not saying anyone is wrong but why would GM have a extra big rad cooler RPO when there is a external tranny cooler RPO. When I replaced my radiator, it was exactly identical to the replacement 3 core. There was nothing special about the new one. Just my opinion of course

 

[HarryH3]

I've never seen a factory external tranny cooler on a GM. Are you sure you aren't looking at the external engine oil cooler? That was optional on K5's some years.

My '91 S-10 has both an extra large in-radiator tranny cooler (that's why the RPO number looked familiar to me) and an in-radiator engine oil cooler.

<font color=black>HarryH3 - '75 K5</font color=black>
http://ThunderTruck.ColoradoK5.com

 

[undertow]

i have a factory external tranny cooler on my late model tahoe... whether that applies to 69-91, i dunno.

.undertow.

 

[Can Can]

VO2 is the code for a Heavy Duty rad WITH a built in tranny cooler. Here's the rest of the cooling system codes:

VO1/VO5- Heavy Duty radiator

VO3- Extra capacity Cooling System

VO8- Heavy Duty Cooling System

And for anyone who cares:

V12- Power Steering Fluid Cooling System(Factory)

V14- Auxilliary Transmission Oil Cooler(Factory)

 

[Cavalry]

Thanks Canmore....glad we got all that cleared up