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Camshaft Timing Drive Chain Alignment Diagram

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Camshaft Drive System Set at Base Engine Timing
GM1564077Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Right Exhaust Camshaft Sprocket Timing Mark - Component 187
2 Right Intake Camshaft Sprocket Timing Mark - Component 188
3 Right Secondary Timing Chain - Component 170
4 Right Secondary Timing Chain Guide - Component 171
5 Left Secondary Timing Chain Tensioner - Component 175
6 Left Secondary Timing Chain Shoe - Component 173
7 Left Secondary Timing Chain - Component 170
8 Left Intake Camshaft Sprocket Timing Mark - Component 177
9 Left Exhaust Camshaft Sprocket Timing Mark - Component 177
10 Left Secondary Timing Chain Guide - Component 171
11 Intermediate Sprocket Timing Mark - Component 160
12 Primary Timing Chain Guide - Component 158
13 Crankshaft Sprocket Pin Alignment Slot - Component 150
14 Primary Timing Chain - Component 155
15 Crankshaft Sprocket Timing Mark - Component 150
16 Primary Timing Chain Tensioner - Component 152
17 Right Secondary Timing Chain Tensioner - Component 175
18 Right Secondary Timing Chain Shoe - Component 183