Relay Block No. 1

WARNING: This page is about a different car, the 2004 GMC Safari and 2004 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Relay Block No. 1 Component Identification

Courtesy of GENERAL MOTORS CORP.

Relay Block No. 1, Pin Identification

Connector Part Information		40024201 20-Way Cassette Type (BLK)
Pin	Wire Color	Circuit No.	Function
1	LT BLU	1344	Trunk Release Relay Control
2	ORN	540	Battery Positive Voltage
3	TAN	294	Door Lock Actuator Unlock Control
4	TAN	246	Rear Door Lock Actuator Unlock Control
5	ORN	540	Battery Positive Voltage
6	LT GRN	1391	Left Front Door Lock Relay Control
7	ORN	540	Battery Positive Voltage
8	BLK	1050	Ground
9	TAN	694	Driver Door Lock Actuator Unlock Control
10	ORN	540	Battery Positive Voltage
11	GRY/BLK	690	Courtesy Lamp Relay Control
12	WHT	156	Courtesy Lamp Switch Signal
13	-	-	Not Used
14	BLK	750	Ground
15	ORN	1732	Courtesy Lamp Supply Voltage
16	DK BLU	1393	Courtesy Lamp Relay Control
17	ORN	40	Battery Positive Voltage
18	-	-	Not Used
19	ORN	1732	Courtesy Lamp Supply Voltage
20	ORN	40	Battery Positive Voltage