PCM Connector C1 And C2 Pin Out Charts (2007 V8 Chevrolet Express, GMC Savana)

By: Abraham Torres-Arredondo
Created: 07 February 2024
Updated: 03 April 2024
Articl Id: 1136

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PCM Connector: C2 (Green) - 2007 V8 Chevy Express/GMC Savana

C2 Green PCM Connector Pinout (2007 Chevrolet Express, GMC Savana)

This section contains the C2 (Green) PCM connector pin outs. To navigate to a different PCM connector, use the links below:

C1 Blue.
C2 Green.
PCM Connector Pinout Wire Color Legend.

C2 (Green) Terminals 1 - 40
Pin	Wire Color	Description
1	BLK/WHT	Chassis Ground
2	BRN	TCC PWM Solenoid Valve Control
3	---	Not Used
4	---	Not Used
5	TAN/BLK	Delivered Torque Signal (w/ JL4 *)
6	ORG/BLK	PC Solenoid Valve High Control
7	---
8	LT BLU/WHT	PC Solenoid Valve Low Control
9	DK GRN/WHT	Fuel Pump Relay Control - Primary Circuit
10	---	Not Used
11	---	Not Used
12	---	Not Used
13	---	Not Used
14	---	Not Used
15	ORG	Alternator Turn On Signal
16	---	Not Used
17	DK GRN/WHT	AC Request Signal (C60 **)
18	---	Not Used
19	---	Not Used
20	PPL	VSS Low Signal
21	YEL	VSS High Signal
22	ORG/BLK	AT ISS High Signal (4L80-E/4L85-E Only)
23	DK BLU/WHT	AT ISS Low Signal (4L80-E/4L85-E Only)
24	---	Not Used
25	TAN	IAT Sensor Signal
26	PPL	Ignition Coil (IC) #1 Control
27	ORG	Ignition Coil (IC) #7 Control
28	LT BLU/WHT	Ignition Coil (IC) #6 Control
29	DK GRN/WHT	Ignition Coil (IC) #4 Control
30	---	Not Used
31	YEL	MAF Sensor Signal
32	LT GRN	MAP Sensor Signal
33	---	Not Used
34	DK GRN/WHT	EVAP Canister Purge Solenoid Control
35	---	Not Used
36	---	Not Used
37	---	Not Used
38	---	Not Used
39	ORG	CMP Sensor 12 Volt Reference
40	BLK/WHT	Chassis Ground

* See this section: What Is JL4 And How Do I Find Out If My Van Has It?

** C60: With manual HVAC system.

NOTE: You can find the wire color legend here: PCM Connector Pinout Wire Color Legend

C2 (Green) Terminals 41 - 80
Pin	Wire Color	Description
41	---	Not Used
42	TAN/BLK	TCC Solenoid Valve Control (5.3L Only)
43	DK GRN/WHT	A/C Compressor Clutch Relay Control (C60 **)
44	---	Not Used
45	WHT	EVAP Canister Vent Solenoid Control
46	BRN/WHT	MIL Control
47	YEL/BLK	2-3 Shift Solenoid Valve Control
48	LT GRN	1-2 Shift Solenoid Valve Control
49	YEL/BLK	Vehicle Speed Signal
50	---	Not Used
51	YEL/BLK	Transmission Fluid Temp (TFT) Sensor Signal
52	PPL	HO2S Heater Low Control - Bank 1 Sensor 2
53	YEL	HO2S Heater Low Control - Bank 2 Sensor 2
54	PPL	Fuel Level Sensor Signal
55	DK GRN	A/C Low Pressure Switch Signal (C60 **)
56	---	Not Used
57	TAN	IAT Sensor Ground (Low Reference)
58	TAN/WHT	Oil Pressure Sensor Signal
59	PPL	Crank Voltage - From CRANK Fuse
60	BRN	Ignition Coil Transistor Ground (Low Reference)
61	BRN/WHT	Ignition Coil Transistor Ground (Low Reference)
62	GRY	Transmission Range Switch Signal C
63	PNK	Transmission Fluid Pressure Switch Signal A
64	DK GRN	Fuel Tank Pressure Sensor Signal
65	---	Not Used
66	PPL/WHT	Ignition Coil (IC) #8 Control
67	ORG/WHT	Ignition Coil (IC) #2 Control
68	DK GRN	Ignition Coil (IC) #5 Control
69	LT BLU	Ignition Coil (IC) #3 Control
70	---	Not Used
71	---	Not Used
72	LT BLU	HO2S Heater Low Control - Bank 1 Sensor 1
73	---	Not Used
74	PPL/WHT	HO2S Heater Low Control - Bank 2 Sensor 1
75	GRY	Alternator Field Duty Cycle Signal
76	---	Not Used
77	---	Not Used
78	---	Not Used
79	---	Not Used
80	---	Not Used

* See this section: What Is JL4 And How Do I Find Out If My Van Has It?

** C60: With manual HVAC system.

NOTE: You can find the wire color legend here: PCM Connector Pinout Wire Color Legend

Safety Precautions

Here are some very important safety precautions when testing the wires coming out of the PCM connectors.

If one or any of the wires on your GM vehicle DO NOT match the color stated in the Pin Out Charts, then you should not use the Pin Out Charts in this article. Why? Because this is the clearest indication that these ARE NOT the Connector Pin Out Charts for your particular vehicle.
Never probe the front of the connector.
- You should use a wire piercing probe and probe the wire a few inches away from the connector.
  - To see what this tool looks like: Wire Piercing Probe.
- You should use a back probe.
This is a FLASH unit and requires reprogramming if replaced with a new one or used one.

PCM Connector Pinout Wire Color Legend

BLK = Black
BLU = Blue
BRN = Brown
GRN = Green
GRY = Grey
ORG = Orange
PNK = Pink
PPL = Purple
RED = Red
TAN = Tan
WHT = White
YEL = Yellow

Some of the wires coming out of the PCM connectors will have a stripe. With these wires, we use a slash to show both colors. For example:

BLK/WHT = Black with a white stripe.
ORG/BLK = Orange with a black stripe.

The first color is the main one, and the color after the slash is the stripe.

A few wire colors will have a 'LT' or a 'DK' before the color, like 'LT BLU' or 'DK BLU'. In this cases, the 'LT' refers to the word 'light' and the 'DK' refers to the word 'dark'. For example:

LT BLU = Light blue.
LT GRN/BLK = Light green with a black stripe.
DK GRN/WHT = Dark green with a white stripe.

What Is JL4 And How Do I Find Out If My Van Has It?

The 3-letter JL4 code is known as a Regular Production Option (RPO) and is found on the Service Parts Identification Label (which is usually located on the right front door of the van).

Vans equipped with the JL4 option, such as the 2007 Chevrolet Express and GMC Savana, will have an Electronic Brake Control Module (EBCM) that provides:

ABS Brakes.
Dynamic Rear Proportioning (DRP).
Traction Control System (TCS).
Vehicle Stability Enhancement System (VSES).

On the 2007 Chevrolet Express and GMC Savana, I've found that the easiest way to determine if it comes with or without the JL4 option is by checking whether it has traction control buttons on the dash.

You can also check the Service Parts Identification Label on the right front door to see if the JL4 RPO is listed.