I need to do some electrical troubleshooting and need to know the location of the Body Control Module on 2000 SL1 models. Can anyone help? Anyone know of a good source for wiring diagrams? By the way, both Haynes and Chilton are very deficient on this technical aspect.
Thanks, John

 

I have the wiring diagrams for just about all GM vehicles. What exactly are you looking for the pinouts for?

#1 is the location of the BCM for all third generation Saturn S-Series

Edited by: Low Saturn

 

Mike,
Thanks for the BCM location information ... I'm tracking down an open circuit in the keyless remote system for the trunk lid servo. It works sporadically ... not a key fob transmitter problem either.
Can you email (pdf) the 2000 wiring diagrams for this circuitry?
Thanks, John

 

Hello mike,i have some problems with my car alarm, and with the BCM can you send me de BCM wiring diagram for the 2002 Sunfire Vin F 2.2Lts Ecotec Engine. ?


i think its the same for the Cavalier


[img]smileys/smiley19.gif[/img]


TNKS...

 

I''ll take a look when I get home from work.

 

C1, Purple:

A1-A2


Not Used

A3
WHT
194
Door Unlock Control

A4
LT BLU
195
Door Lock Control

A5
BLK/WHT
56
Trunk Release Motor Control

A6
TAN
694
Driver Door Lock Actuator Unlock Control (AUO)

A7
LT GRN/BLK
394
Driver Door Jamb Switch Signal

A8
LT BLU
395
Passenger Door Jamb Switch Signal

B1-B7


Not Used

B8
PPL
1807
Class 2 Serial Data

Edited by: Low Saturn

 

C2, Light Blue:

A1
BRN
9
Park Lamp Supply Voltage

A2


Not Used

A3
YEL
43
Accessory Voltage

A4
ORN/BLK
737
Rear Compartment Lamp Control

A5
BRN/WHT
230
Instrument Panel Lamps Dimming Control

A6
PNK
1200
Headlamp High Beam Signal

A7
YEL
1836
Security System Sensor Signal

A8-A9


Not Used

A10
ORN
1732
Courtesy Lamps Supply Voltage

A11
ORN
1440
Battery Positive Voltage

A12
ORN
340
Battery Positive Voltage

B1
BLK/WHT
451
Ground

B2
LT BLU
1134
Park Brake Switch Signal

B3


Not Used

B4
BLK/WHT
1576
Rear Compartment Lock Actuator Unlock

B5


Not Used

B6
DK BLU
1201
Headlamp Low Beam Signal

B7
PPL
1807
Class 2 Serial Data

B8
PPL
1807
Class 2 Serial Data

B9
PPL
1807
Class 2 Serial Data

B10
ORN
1940
Battery Positive Voltage

B11
BLK/WHT
251
Ground

B12


Not Used

 

C3, Brown:

A1
WHT
156
Courtesy Lamp Low Control

A2
GRY
8
Instrument Panel Lamp Supply Voltage

A3


Not Used

A4
LT GRN/BLK
592
DRL Relay Control

A5
BRN
323
A/T Shift Lock Control (MMO Only)

A6-A8


Not Used

A9
BRN/WHT
1571
Traction Control Switch Signal (Pontiac)

A10
LT GRN
66
A/C Request Signal

A11
ORN
192
Front Fog Lamp Switch Signal

A12
PNK
39
Ignition 1 Voltage

B1
PPL
719
Low Reference

B2
BLK/WHT
151
Ground

B3
BLK
1835
Security System Sensor Low Reference

B4


Not Used

B5
DK GRN/WHT
1317
Fog Lamp Relay Control

B6


Not Used

B7
BLK
28
Horn Relay Control

B8
YEL/BLK
68
Low Coolant Level Indicator Control

B9
GRY
728
Security Indicator Control

B10
WHT
1459
Security System Sensor Supply Voltage

B11
PNK
849
Brake Fluid Level Sensor Signal

B12
LT GRN
80
Key In Ignition Switch Signal

 

Please help
I have a 2001 sl2 autotrans
The underhood fuse box started smoking and when I inspected it I found out that a previous owner had butured the front harness.
I grabbed one from a pick n pull.
Thought I could pull the connectors out of the uhcm and crimp the new harness in.
Went to work and when I came back one of my kids had tried to help and now I don't know the location of each wire in the far left connector.
I'm in over my head and I think the only way im going to be able to fix this is if I can come up with a pinout diagram for the front harness .
Please tell me you have one or know where I can view one online.
Thanks in advance for taking the time to help out.

 

Try using Google to search on the phrase

2000 saturn sl1 pcm wiring diagram

and rummage through the images that google pulls up in the image section of the results. Either that or get a Field Service Manual (a REAL Saturn one) off Ebay.