A Component Comparison from the Previous Year

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Two new designs of timing components are being used.

Third Design:

The camshaft position actuator sensors are a new design.
The camshaft position actuators incorporate new sensor wheels that correspond with the new design of camshaft position actuator sensors.

Fourth Design:

New secondary timing drive chains, Inverted Tooth (IT) design.
The camshaft position actuators incorporate new sprockets that correspond with the use of IT chains on the secondary timing drive system.
The intake camshaft position actuators are different for the left and right sides.
The left and right secondary timing drive guides are new due to the use of IT chains on the secondary timing drive system.
The intermediate timing drive sprockets are new due to the use of IT chains on the secondary timing drive system.
New intake camshafts.
New second design IT primary timing drive chain.
New second design IT crankshaft sprocket.