Cellular Communication Connector End Views

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Inside Rearview Mirror Terminal Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		917981-2 16-Way F AMP Multilock 040/070 Hybrid (BK)
Pin	Wire Color	Circuit Number	Function
1	-	-	Not Used
2	BARE	1705	Drain Wire
3-7	-	-	Not Used
8	BK	750	Ground
9	-	-	Not Used
10	GY	655	Cellular Microphone Signal
11	D-GN/WH	2514	Keypad Signal
12	L-GN/BK	2515	Keypad Supply Voltage
13	-	-	Not Used
14	YE/BK	2516	Keypad Green LED Signal
15	BN/WH	2517	Keypad Red LED Signal
16	-	-	Not Used

Vehicle Communication Interface Module (VCIM) Terminal Identification - C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		917981-1 16-Way M AMP MKII Hybrid (WH)
Pin	Wire Color	Circuit Number	Function
1	-	-	Not Used
2	BN/WH	2517	Keypad Red LED Signal
3	YE/BK	2516	Keypad Green LED Signal
4-5	-	-	Not Used
6	L-GN/BK	2515	Keypad Supply Voltage
7	-	-	Not Used
8	BK/WH	351	Ground
9-10	-	-	Not Used
11	D-GN/WH	2514	Keypad Signal
12-14	-	-	Not Used
15	OG	2340	Battery Positive Voltage
16	-	-	Not Used

Vehicle Communication Interface Module (VCIM) Terminal Identification - C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		917975-1 12-Way M AMP MKII Hybrid (WH)
Pin	Wire Color	Circuit Number	Function
1	OG/BK	1406	Left Audio Signal (+)
2	L-BU	1405	Audio Common Signal
3-5	-	-	Not Used
6	L-GN	2271	ADG Class 2 Serial Data
7	-	-	Not Used
8	BARE	2012	Drain Wire
9	GY	655	Cellular Microphone Signal
10	BARE	1705	Drain Wire
11-12	-	-	Not Used