Tahoe:
Deletions
(D31) Mirror, inside rearview, manual day/night
(PCK) OnStar Plus Package
(R6Y) OnStar Plus Package discount not desired
(PDY) Safe and Secure Package
(R6X) Safe and Secure Package discount not desired
(UB1) Sound system with CD and cassette player
(NW7) Traction assist system, electronic
7-way to 4-way trailering adapter
(NR4) Transfer case
New Features
(PCV) Smart Select Package
(UB0) Sound system with CD player
(L59) Engine, Vortec 5300 V8 SFI Flex-Fuel is available on all equipment groups
Proactive Roll Avoidance enhancement on StabiliTrak
Changes
(B37) Vinyl floormats replace (B58) Carpeted floormats on 1SJ and 1SK
(DF5) Mirror, inside rearview is standard on all equipment groups
(UE1) OnStar is standard on all equipment groups
(UK3) Steering wheel, mounted controls is standard on all equipment groups
Visors have been changed to an extend-on-rod design
(JL4) StabiliTrak, stability control is standard on all equipment groups
Suburban:
Deletions
(D31) Mirror, inside rearview, manual day/night
(PCK) OnStar Plus Package
(R6Y) OnStar Plus Package discount not desired
(PDY) Safe and Secure Package
(R6X) Safe and Secure Package discount not desired
(UB1) Sound system with CD and cassette player
(U01) Lamps, amber roof marker
(DPF) Mirrors, outside rearview, power adjustable, heated, camper-style
(NYS) 4-wheel steering
(G86) Differential, limited slip
(NW7) Traction assist system, electronic
7-way to 4-way trailering adapter
(NR4) Transfer case
New Features
LTZ 1/2 ton 4WD Model
(PCV) Smart Select Package
(UB0) Sound system with CD player
(DPN) Mirrors, outside rearview, power adjustable, heated, manual folding and extending
Proactive Roll Avoidance enhancement on StabiliTrak
Changes
(B37) Vinyl floormats replace (B58) Carpeted floormats on 1SJ and 1SK
(DF5) Mirror, inside rearview is standard on all equipment groups
(UE1) OnStar is standard on all equipment groups
(UK3) Steering wheel, mounted controls is standard on all equipment groups
(UJ6) Tire pressure monitoring system is now standard on 3/4 ton Models
Visors have been changed to an extend-on-rod design
(JL4) StabiliTrak, stability control is standard on all equipment groups
By the way, here's pics of the new LTZ model:

