GM Service Manual Online
For 1990-2009 cars only
Table 1: Automatic Transmission Controller
Table 2: Automatic Transmission Indicator Lamp
Table 3: Park/Neutral Position and Backup Lamp Switch Connector C1
Table 4: Park/Neutral Position and Backup Lamp Switch Connector C2

Automatic Transmission Controller


Object Number: 40422  Size: CH

Connector Part Information

    • 12064762
    • 6-Way F Metri-Pack 150 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

BLK

1850

Ground

B

LT GRN/BLK

584

Fuse Output - Brake Transmission Shift Interlock

C

YEL

1996

Remote Shift Select Signal

D

--

--

Not Used

E

DK GRN/BLK

1135

Automatic Transmission Shift Lock Solenoid Feed

F

PNK

1020

Fuse Output - OFF/RUN/CRANK

Automatic Transmission Indicator Lamp


Object Number: 280768  Size: CH

Connector Part Information

    • 12052832
    • 2-Way F Metri-Pack 150 Series (BLK)

Pin

Wire Color

Circuit No.

Function

A

GRY

1220

Fuse Output-Instrument Panel Lamps

B

BLK

1850

Ground

Park/Neutral Position and Backup Lamp Switch Connector C1


Object Number: 68780  Size: CH

Connector Part Information

    • 12129840
    • 7-Way F Metri-Pack 150/280 Series (GRY)

Pin

Wire Color

Circuit No.

Function

A

--

--

Not Used

B

LT GRN

275

Transmission Mounted Neutral Safety Switch Output

C

PNK

839

Fuse Output - Ignition 1 - Type III Fuse

D

BLK/WHT

451

Ground

E

PPL

806

Fuse Output - Crank - Type III Fuse

F

GRY

1524

Backup Lamp Feed - Monitored

G

PPL/WHT

1035

Starter Relay Feed - Coil

Park/Neutral Position and Backup Lamp Switch Connector C2


Object Number: 40412  Size: CH

Connector Part Information

    • 12191757
    • 4-Way F Metri-Pack 150 Series, Sealed (NAT)

Pin

Wire Color

Circuit No.

Function

A

BLK/WHT

771

Transmission Position Switch - Bit 1

B

GRY

773

Transmission Position Switch - Bit 3

C

WHT

776

Transmission Position Switch - Parity Bit

D

YEL

772

Transmission Position Switch - Bit 2