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post #1 of (permalink) Old 08-07-2009, 09:14 AM Thread Starter
Senior Member
Join Date: Feb 2009
Location: Farmington Hills, MI
Posts: 142
Complete List of 2009.5 Changes (VS 2009)

We are trying to complile a list of changes to help people better understand the MANY changes that were done to the 2009.5MY Vehicles that mostly go unnoticed now but may matter in the future. If you know of a difference that isnt mentioned here please let us know.

Control Systems:
ECM (GT/GXP Share Same New OS)
TCM (GT/GXP Share Same New OS)
BCM (New 09.5 Calibration with many subsystem changes)
IPC (Totally New Hardware/Calibration NOT Compatible with 08/09)
Radio (New Part # for Face and Unit)
VCIM (New Part to add Bluetooth)
Cup Holders Added To Rear Seat Bottom
New Valley Plate/Oil Module for L76
New Timing Chain Tensioner
New Water Pump
New Radiator Hoses
New ECM Mounting Bracket
New Camshaft for L76 (Unverified physically but very likely)
New Diameter for foul air passage
Additional Two Pup Cats Added to Mid Pipe Section for GT/GXP
Rear fascia retooled for GXP Style Valence (may have happened earlier in 09 not sure)

Last edited by SellersAutoSport; 10-26-2009 at 02:01 PM.
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