Hello all,I have an '04 Tahoe 4x4,5.3,how do I find out exactly what rear end I have?There's no tag on the housing,the door sticker doesn't say,and the owners manual don't say either,thanks in advance for all your help.

 

Check the RPO codes or build codes in the glove box

 

OK,I went to the glove box,found the codes...which one do I need to look at...LOL,there's alot of codes there but I don't know how to decipher them.

 

Per your VIN you posted you have the 3.73 or GT4 RPO

http://www.compnine.com/vid.php?vin=1gnek13z74r196737

GT4 AXLE,REAR,3.73 RATIO 3.73R(GT4)

 

Thanks,I went there too,but I didn't know if that was specific for MY vehicle or what...but thanks alot anyway...I'm trying to figure the towing capacity for my Tahoe,it has a small trans. cooler that you can see through the grill,but as long as my towing capacity is OK for my TT,I want to add a bigger trans. cooler.

 

If your have the GT4 listed in the codes in the glove box then you have the 3.73
and if you can see the extra little cooler for the tranny you probably have the "towing package" or " heavy duty trans cooling package" as for towing capacity check your owners manual under Towing...

 

Don't have your owners manual go here----> http://www.ownersmanualsource.com/ma...owners-manual/

its the suburban and Tahoe owners manual for 2004... click the link to download the PDF

 

10-4..thanks...

 

Hi schlepprock379,

Welcome to the Chevy Forums.

Have your VIN run for RPO codes under "please look up my VIN " by ShawnVW.
Many of the RPO codes refer directly to tow packages, transmission type and factory add-ons, and towing capacity...