L92 Heads came on all 2007 GM based Vehicles with 6.2L Motor

I punched in the 2008 (just be sure) Cadillac Escalade ESV

Valve Cover LH/DS GM Part# 12570427
Valve Cover RH/PS GM Part# 12582224

****These Part numbers include the Valve Cover, Gakset and Bolts

I ordered the Valve Covers from www.Number1GMParts.com
There item price is a little more the GMPartsdirect.com but their shipping is alot cheaper so it actually came out to $15 less the GMPartsdirect.com
can also call them which is cool 1-561-686-4434 or 1-888-890-1760

Coolant Plug GM Part# 12553191
Air Bleeder Hose GM Part# 12570528
2 Clamps for the Hose Gm Part# 25526358
I got this from local dealer b/c Shipping kills the deal by far!

Also got
Coolant By Pass Pipe GM Part# 12604711
(Got from Number1 b/c shipping made it cheaper!)