INTRODUCTION
ARROWS AND SYMBOLS
This service manual uses various symbols in order to describe different
service operations.
Fig. 1: Identifying Different Service Operations Symbols
ACRONYMS AND U
Metric Fasteners
This vehicle provides fastener dimensions using the metric system. Most
metric fasteners are approximate in
diameter to equivalent English fasteners. Make replacements using fastener
Onstar description and operation
This OnStar system consists of the following components:
Telematics communication interface control module
OnStar three button assembly
Microphone
Cellular antenna
Navigation antenna
Bluetooth antenna (If equipped)
Back up battery (If equipped)
This system a
SCHEMATIC WIRING DIAGRAMS
ACTIVE NOISE SYSTEM CANCELLATION WIRING SCHEMATICS (ENCORE)
Active Noise Cancellation (NKC)
Fig. 1: Active Noise Cancellation (NKC)
DIAGNOSTIC INFORMATION AND PROCEDURES
ACTIVE NOISE CANCELLATION MALFUNCTION
Diagnostic Instructions
Perform the Diagnostic System Check -