Powertrain Control Module (PCM) X3 (L26)

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

Fig 1: Powertrain Control Module (PCM) X3 (L26) Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
1-3	-	-	Not Used
4	0.5 TN/PK	3121	HO2S 2 Low Signal
5	0.5 D-GN	1227	TFT Sensor Signal
6	0.5 RD/YE	492	MAF Sensor Signal
7	-	-	Not Used
8	0.8 GY/WH	3122	HO2S 2 Heater Low Control
9-10	-	-	Not Used
11	0.5 OG/BK	1230	AT ISS High Signal
12	0.5 PK/YE	400	VSS Signal High
13-14	-	-	Not Used
15	0.5 GY	773	Transmission Range Switch Signal C
16-18	-	-	Not Used
19	0.5 PU	3120	HO2S 2 High Signal
20	-	-	Not Used
21	0.5 L-GN	1652	Reverse Lockout Solenoid Control
22	0.5 YE	772	Transmission Range Switch Signal B
23	0.5 WH/BK	776	Transmission Range Switch Signal P
24	0.5 WH/BK	1804	TCC Release Switch Signal
25	-	-	Not Used
26	0.5 TN	472	IAT Sensor Signal
27-30	-	-	Not Used
31	0.5 YE/GY	6788	Air Injection Pressure Sensor Signal (NU6)
32	-	-	Not Used
33	0.5 L-GN	1222	1-2 Shift Solenoid Valve Control
34	0.5 TN/WH	771	Transmission Range Switch Signal A
35-38	-	-	Not Used
39	0.5 TN/BK	422	TCC Solenoid Valve Control
40-43	-	-	Not Used
44	0.5 PU	401	VSS Signal Low
45	-	-	Not Used
46	0.5 OG	1223	2-3 Shift Solenoid Valve Control
47	0.5 OG/WH	1228	PC Solenoid Valve High Control
48	0.5 TN/OG	452	Low Reference
49	0.5 D-BU/WH	1231	AT ISS Low Signal
50	0.5 TN/D-BU	2760	Low Reference
51	0.5 L-BU/WH	1229	PC Solenoid Valve Low Control
52-56	-	-	Not Used

Connector Part Information

OEM: 15497528 (- NU6), 13528606 (NU6)
Service: See Catalog
Description: 56-Way F Micro-Pack, Sealed (GY)

Terminal Part Information

Terminal/Tray: See Terminal Repair Kit
Core/Insulation Crimp: See Terminal Repair Kit
Release Tool/Test Probe: See Terminal Repair Kit