Z71Tahoe2004
Member
Can anyone chime in on why some 03-06 model year Tahoes have oil cooler lines and others don't?
No oil cooler lines?
- Thread starter Z71Tahoe2004
- Start date
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Scottydoggs
Full Access Member
id think the ones with out it dont have the towing package.
73impala
Full Access Member
Would assume because some have oil coolers and some don't? Just was under mine because I have to replace the gasket for it but mine doesn't have an oil cooler so it has no lines.
swathdiver
Full Access Member
K5L and KC4
The former is for the HD Cooling and comes with 3.42 gears and includes the latter which is the RPO for the oil cooler.
OP
OP
Z71Tahoe2004
Member
It's the engine oil cooling lines I'm wondering about. I've got the towing package, which equips the truck with the auxiliary transmission oil cooler on the front of the radiator to deal with the extra load on the tranny during towing. But I don't have engine oil cooling lines. Trying to figure out why some cool the engine oil and others don't.
swathdiver
Full Access Member
Not sure why on the GMT800s. You might want to read some brochures from those years and see what they say.
swathdiver
Full Access Member
Well, I just looked at the 2002 and 2003 Suburban and Tahoe and Silverado brochures and none of them mention an external engine oil cooler for the 1500 chassis. Might it have been introduced later?
OP
OP
Z71Tahoe2004
Member
May have been. Mine's a 2004. Also wondering whether some of the stuff I've been seeing in videos on maintenance might have been on 2500-type Silverados. I looked through the Haynes manual a few minutes ago and am not finding anything about oil cooler lines, so it may be that. The stuff I was seeing was my model year range - but I may have not noticed that the truck was a Silverado heavy, maybe?
it was probably added as a factory option for some reason, either way pretty sure you can add it if you wanted to, just get a radiator with eoc (engine oil cooler), the adapter plate and the oil cooler lines
