2004 Tahoe Transmission Fluid and Filter Change

[ueww40]

I am planning on doing a transmission service on my 2004 Tahoe LT, 5.3 ltr. flex V-8 with 143000 miles on it and I am unsure what to order. Can anybody tell me the model number of the trans in my Tahoe? What fluid should I use? It says Dexron-III, just to confirm is that correct? But my biggest confusion is with the filter. I don't know if I need a shallow pan filter or a deep pan filter. Can anybody help. - Thanks!