How do i get the control locked switch to turn off?

Body Control Module (BCM)
Below the left side of the I/P to the left of the steering column.
Has three connectors.connector #1 52-Way F AMP Hybrid (BK) Body Control Module (BCM) C1 Pin
Wire Color
Circuit No.
Function
1
TN
860
Front Windshield Wiper Switch High Signal
2
WH
1459
Security System Sensor Supply Voltage
3
PK
1439
Ignition 1 Voltage
4
TN
28
Horn Relay Control
5
OG
300
Run Relay Control
6
TN
707
RAP Relay Coil Control
7
TN/WH
1969
Headlamp High Beam Relay Control
8
--
--
Not Used
9
PK/WH
1970
Headlamp Low Beam Relay Control
10
WH
1080
Park Lamp Relay Control
11
YE
749
Security Indicator Control
12
GY
91
Windshield Wiper Switch Signal 2
13
YE
196
Windshield Wiper Motor Park Switch Signal
14
TN
1835
Low Reference
15
L-GN/BK
1137
DRL Ambient Light Sensor Signal
16
YE
5066
Brake Pedal Position Sensor Signal
17
BK/WH
1651
Ground
18
--
--
Not Used
19
BK/WH
151
Ground
20
BK/WH
1651
Ground
21
YE
5
Crank Voltage
22
PK
1239
Ignition 1 Voltage
23
BN
1141
Accessory Voltage
24
--
--
Not Used
25
WH/BK
644
12-Volt Reference
26
PK/BK
109
Hood Ajar Switch Signal
27
OG
5688
10-Volt Reference
28
GY/BK
5689
Low Reference
29
BN/WH
230
Low Reference
30
PK
1444
I/P Dimming Control
31
OG/WH
812
I/P Dimming Voltage
32
--
--
Not Used
33
BN
5077
Low Reference
34
BN/WH
1571
Traction Control Switch Signal
35
GY/BK
1598
Courtesy Lamps Switch Off Signal
36
PK/BK
1597
Courtesy Lamps Switch On Signal
37
TN/WH
1455
Keyless Entry Signal
38
L-GN
1037
Class 2 Serial Data
39
L-GN
526
Stop Lamp Supply Voltage
40
L-GN
80
Key In Ignition Switch Signal
41
L-BU/WH
1314
Left Front Turn Signal Lamp Supply Voltage
42
D-BU/WH
1315
Right Front Turn Signal Lamp Supply Voltage
43
GY/BK
690
Courtesy Lamp High Control
44
OG
1732
Inadvertent Power Courtesy Lamp
45
--
--
Not Used
46
RD/WH
340
Battery Positive Voltage
47
OG
228
Windshield Washer Pump Control
48
GY
8
Instrument Panel Lamp Supply Voltage
49
D-GN/WH
1135
A/T Shift Lock Control Solenoid Control (w/o AQW)
GN/WH
1135
A/T Shift Lock Control Solenoid Control (AQW)
50
RD/WH
240
Battery Positive Voltage
51
RD/WH
2440
Battery Positive Voltage
52
RD/WH
1240
Battery Positive Voltage
Connector #2 52-Way F Receptacle 0.64, 2.8 (BK) Release Tool/Test Probe: 12094429/J-35616-4A
Body Control Module (BCM) C2 Pin
Wire Color
Circuit No.
Function
1
--
--
Not Used
2
OG/BK
780
Driver Door Lock Switch Lock Signal
3
D-GN
5512
Liftgate Open Switch Signal
4
D-BU
245
Passenger Door Lock Switch Unlock Signal
5
L-GN/BK
748
Right Rear Door Ajar Switch Signal
6
YE/BK
1181
Right Rear Door Open Switch Signal
7
L-BU/BK
747
Left Rear Door Ajar Switch Signal
8
L-GN
1177
Right Front Door Open Switch Signal
9
L-BU
1134
Park Brake Switch Signal
10
L-BU
2380
Rear Parking Assist Chime Signal (UD7)
11
OG/BK
781
Driver Door Lock Switch Unlock Signal
12-15
--
--
Not Used
16
WH
193
Rear Defog Relay Control
17
TN/WH
746
Right Front Door Ajar Switch Signal
18
D-BU/WH
1179
Left Rear Door Open Switch Signal
19-21
--
--
Not Used
22
L-GN
1123
Door Lock Key Switch Lock Signal
23
WH
5075
Current Sensor Signal
24
PU
1124
Door Lock Key Switch Unlock Signal
25
TN
126
Left Front Door Open Switch Signal
26
GY/BK
745
Left Front Door Ajar Switch Signal
27-29
--
--
Not Used
30
WH
17
Stop Lamp Supply Voltage
31
L-BU
244
Passenger Door Lock Switch Lock Signal
32-33
--
--
Not Used
34
PK/BK
1303
Liftgate Ajar Switch Signal (Early Production)
35
YE
2080
Low Reference
36
PK
2435
Low Reference
37
YE/BK
2079
Driver Heated Seat Cushion Temperature Sensor Signal
38
GY
2434
Passenger Heated Seat Cushion Temperature Sensor Signal
39
TN/WH
2430
Passenger Heated Seat Relay Control
40
PU
2477
Driver Heated Seat Relay Control
41
--
--
Not Used
42
L-GN
24
Backup Lamp Supply Voltage
43
YE
18
Left Rear Stop/Turn Lamp Supply Voltage
YE
18
Left Rear Stop/Turn Lamp Supply Voltage
44
GY
8
Instrument Panel Lamp Supply Voltage
45
L-GN
275
Park/Neutral Position Park Signal (E58 w/o AQW)
L-GN
275
Park/Neutral Position Park Signal (E59 w/o AQW)
L-GN
275
Park/Neutral Position Park Signal (AQW)
46
TN
694
Driver Door Lock Actuator Unlock Control
47
--
--
Not Used
48
D-GN
19
Right Rear Stop/Turn Lamp Supply Voltage
D-GN
19
Right Rear Stop/Turn Lamp Supply Voltage
49
RD/WH
440
Battery Positive Voltage
50
BK
550
Ground
51
TN
294
Door Lock Actuator Unlock Control
52
GY
295
Door Lock Actuator Lock Control

SMART ENTRANCE CONTROL UNIT PFP:28596 Description EKS003A2 OUTLINE The smart entrance control unit totally controls the following body electrical system operations. ? Warning chime ? Rear window defogger and door mirror defogger ? Power door locks ? Remote keyless entry system ? Vehicle security system ? Interior lamp ? Battery saver control BATTERY SAVER CONTROL Interior Lamp/Map Lamp/Vanity Lamps The lamps turn off automatically when the interior lamp, map lamp or/and vanity lamps are illuminated with the ignition key in the OFF position, if the lamp remains lit by the door switch open signal or if the lamp switch is in the ON position for approximately 10 minutes. After lamps are turned off by the battery saver system, the lamps illuminate again when: ? Driver's door is locked or unlocked, ? Door is opened or closed, ? Key is inserted into or removed from the ignition key cylinder. Rear Window Defogger/Door Mirror Defogger Rear window defogger and door mirror defogger are turned off approximately 15 minutes after the rear window defogger switch is turned on.

Warning chime Key switch (Insert) Ignition switch (ON) Lighting switch (1st or 2nd) Seat belt buckle switch LH Front door switch LH Warning chime (located in smart entrance control unit)

Does it have power locks ?

TIME CONTROL UNIT PFP:28491 Description (Without Power Door Locks) EKS003A6 OUTLINE The time control unit totally controls the following body electrical system operations. ? Warning chime ? Rear window defogger INPUT/OUTPUT System Input Output Warning chime Key switch (Insert) Ignition switch (ON) Lighting switch (1st or 2nd) Seat belt buckle switch LH Front door switch LH Warning chime (located in time control unit) Rear window defogger Ignition switch (ON) Rear window defogger switch Rear window defogger relay

Automatic Transmission Shift Lock Control System
The automatic transmission shift lock control system is a safety device that prevents an inadvertent shift out of PARK when the engine is running. The driver must press the brake pedal before moving the shift lever out of the PARK position. The system consists of the following components:
?€¢
The automatic transmission shift lock control solenoid

?€¢
The automatic transmission shift lock control switch

With the ignition in the ON position, voltage is supplied to automatic transmission shift lock control switch. Voltage flows through the normally closed contacts of the automatic transmission shift lock control switch to the automatic transmission shift lock control solenoid. The automatic transmission shift lock control solenoid is permanently grounded. This energizes the automatic transmission shift lock control solenoid causing the transmission shift lever to be physically locked in the PARK position. When the brake pedal is pressed the contacts in the automatic transmission shift lock control switch open, de-energizing the automatic transmission shift lock control solenoid. This allows the shift lever to be move out of the PARK position.
Shift Lever Does Not Move with Brake Pedal Depressed ?

2

1. Turn ON the ignition.
2. Press and hold the brake pedal.
3. Attempt to move the shift lever out of the PARK position.

Does the shift lever move out of the PARK position?
Go to Testing for Intermittent Conditions and Poor Connections
Go to Step 3

3

1. Turn OFF the ignition.
2. Disconnect the automatic transmission shift lock control switch.
3. Turn ON the ignition, with the engine OFF.
4. Attempt to move the shift lever out of the PARK position.

Does the shift lever move out of the PARK position?
Go to Step 7
Go to Step 4

4

1. Turn OFF the ignition.
2. Leave the automatic transmission shift lock control switch disconnected.
3. Connect a test lamp between the A/T shift lock control solenoid supply voltage circuit at the automatic transmission shift lock control solenoid and a good ground.
4. Turn ON the ignition with the engine OFF.

Does the test lamp illuminate?

5

1. Turn OFF the ignition.
2. Connect a test lamp between the ignition 1 voltage circuit of the park lock solenoid and a good ground.
3. Turn ON the ignition with the engine OFF.

Does the test lamp illuminate?
Go to Step 6
Go to Step 9

6

1. Turn OFF the ignition.
2. Connect a test lamp between the ignition 1 voltage circuit of the park lock solenoid and the park lock solenoid ground circuit.
3. Turn ON the ignition with the engine OFF.

Does the test lamp illuminate?
Go to Step 8
Go to Step 11

7

Inspect for poor connections at the harness connector of the automatic transmission shift lock control switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 14
Go to Step 13

8

Inspect for poor connections at the harness connector of the park lock/automatic transmission shift lock control solenoid assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 14
Go to Step 12

9

Repair the open or high resistance in the park lock solenoid ignition 1 voltage circuit. Refer to Circuit Testing or Wiring Repairs in Wiring Systems.
Did you complete the repair?
Go to Step 14
--

10

Repair short to battery positive voltage in the A/T shift lock control solenoid supply voltage circuit. Refer to Circuit Testing or Wiring Repairs in Wiring Systems.
Did you complete the repair?
Go to Step 14
--

11

Repair the open or high resistance in the park lock solenoid ground circuit. Refer to Circuit Testing or Wiring Repairs in Wiring Systems.
Did you complete the repair?
Go to Step 14
--

12

Important: Depress the button on the side of the shift lock actuator. With the button is depressed, cycle the plastic straw within the shift lever 3 to 5 times. The straw should move smoothly and freely except near the top of the travel where additional force will be required to mechanically actuate the park lock mechanism inside of the shift lock actuator. If there is stick/slip or abnormal friction while cycling the plastic straw or if the straw is altogether stuck in the lever, the entire control assembly (shifter and shift lock actuator) needs to be replaced. Refer to Transmission Control Replacement . If there is no abnormal friction, replace the shift lock actuator. Refer to Automatic Transmission Shift Lock Control Actuator Replacement .
Did you complete the replacement?
Go to Step 14
--

13

Replace the automatic transmission shift lock control switch. Refer to Stop Lamp Switch Replacement in Lighting Systems.
Did you complete the replacement?
Go to Step 14
--

14

Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2

Automatic Transmission Shift Lock Control System
The automatic transmission shift lock control is a safety device that prevents an inadvertent shift out of PARK when the ignition is ON. The driver must press the brake pedal before moving the shift lever out of the PARK position. The system consists of the following components:
?€¢
The automatic transmission shift lock control solenoid.

?€¢
The automatic transmission shift lock control switch.

?€¢
The park/neutral position switch.

With the ignition in the ON position, battery positive voltage is supplied to the park/neutral position switch. When the transmission is in the PARK position the contacts in the park/neutral position switch are closed. This allows current to flow through the switch to the automatic transmission shift lock control switch. The circuit continues through the normally-closed switch to the automatic transmission shift lock control solenoid. The automatic transmission shift lock control solenoid is permanently grounded. This energizes the automatic transmission shift lock control solenoid, locking the shift linkage in the PARK position. When the driver presses the brake pedal the contacts in the automatic transmission shift lock control switch open, causing the automatic transmission shift lock control solenoid to release. This allows the shift lever to move from the PARK position.
Park Lock Solenoid
The park lock solenoid is a safety device that prevents an inadvertent shift out of PARK when the key is in the OFF position. The key must be in the RUN position to release the park lock solenoid. The system consists of the park lock solenoid. With the ignition in the ON position, voltage is supplied to the park lock solenoid. The park lock solenoid energizes through a permanent ground unlocking the shift lever. With the ignition in the OFF or ACCY position the park lock solenoid de-energizes and locks the shift lever in the park position.
Shift Lever Does Not Move with Brake Pedal Depressed
DEFINITION: Transmission shift lever will not move out of the PARK position with the ignition ON and the brake pedal pressed.

1

Did you perform the Symptoms - Automatic Transmission Shift Lock Control tests and all the necessary inspection?
Go to Step 2
Go to Symptoms - Automatic Transmission Shift Lock Control

2

1. Turn ON the ignition, with the engine OFF.
2. Press and hold the brake pedal.
3. Attempt to move the shift lever out of the PARK position.

Does the shift lever move out of the PARK position?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
NO Go to Step 3

3

1. Turn OFF the ignition.
2. Disconnect the automatic transmission shift lock control switch.
3. Turn ON the ignition, with the engine OFF.
4. Press and hold the brake pedal.
5. Attempt to move the transmission shift lever out of the PARK position.

Does the transmission shift lever move out of the PARK position?
Go to Step 6
Go to Step 4

4

1. Turn OFF the ignition.
2. Disconnect the automatic transmission shift lock control solenoid.
3. Turn ON the ignition, with the engine OFF
4. Press and hold the brake pedal.
5. Attempt to move the transmission shift lever out of the PARK position.

Does the transmission shift lever move out of the PARK position?
Go to Step 7
Go to Step 5
Inspect for poor connections at the harness connector of the automatic transmission shift lock control solenoid. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 10
Go to Step 9

6

Inspect for poor connections at the harness connector of the automatic transmission shift lock control switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 10
Go to Step 8

7

Repair the short to battery positive voltage in the A/T shift lock control solenoid supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you complete the repair?
Go to Step 10
--

8

Replace the automatic transmission shift lock control switch. Refer to Stop Lamp Switch Replacement in Lighting Systems.
Did you complete the replacement?

Electronic Park Lock (EPL)/Ignition Lock Cylinder Control Actuator: If the vehicle is equipped with automatic transmission and a floor mounted console gear shift, it has an ignition lock cylinder control actuator system in the steering column. The ignition lock cylinder control actuator purpose is to prevent the ignition key from being turned to the OFF position when the transmission is in any position other than PARK and the vehicle may still be moving. The column ignition lock system consists of an ignition lock cylinder control actuator, and a park position switch that is located in the automatic transmission shift lock control switch. The ignition lock cylinder control actuator contains a pin that is spring loaded to mechanically prevent the ignition key cylinder from being turned to the lock position when the vehicle transmission is not in the PARK position. If vehicle power is lost, and/or the transmission is not in the PARK position the operator will not be able to turn the ignition key to the lock position and will not be able to remove the ignition key from the column.

Does your impala have floor shifter ?

Shift interlock problem . do you know what that is ?
Automatic Transmission Shift Lock Control System
The automatic transmission shift lock control system is a safety device that prevents an inadvertent shift out of PARK when the engine is running. The driver must press the brake pedal before moving the shift lever out of the PARK position. The system consists of the following components:
• The automatic transmission shift lock control solenoid
• The automatic transmission shift lock control switch
With the ignition in the ON position, voltage is supplied to automatic transmission shift lock control switch. Voltage flows through the normally closed contacts of the automatic transmission shift lock control switch to the automatic transmission shift lock control solenoid. The automatic transmission shift lock control solenoid is permanently grounded. This energizes the automatic transmission shift lock control solenoid causing the transmission shift lever to be physically locked in the PARK position. When the brake pedal is pressed the contacts in the automatic transmission shift lock control switch open, de-energizing the automatic transmission shift lock control solenoid. This allows the shift lever to be move out of the PARK position.
Park Lock Solenoid
The park lock solenoid is a safety device that prevents an inadvertent shift out of PARK when the key is in the OFF position. The key must be in the RUN position to release the park lock solenoid.
The system consists of the park lock solenoid.
With the ignition in the ON position, voltage is supplied to the park lock solenoid. The park lock solenoid energizes through a permanent ground unlocking the shift lever. With the ignition in the OFF or ACCY position the park lock solenoid de-energizes and locks the shift lever in the park position.

Shift Lever Does Not Move with Brake Pedal Depressed
Step
Action
Yes
No
Schematic Reference: Shift Lock Control Schematics
Connector End View Reference: Shift Lock Control Connector End Views or Automatic Transmission Related Connector End Views
DEFINITION: Transmission shift lever does not move out of the PARK position with the ignition ON and the brake pedal pressed.
1
Did you perform the symptom table tests and necessary inspections?
YES - Go to Step 2
NO - Go to Symptoms - Automatic Transmission Shift Lock Control
2
Turn ON the ignition.
Press and hold the brake pedal.
Attempt to move the shift lever out of the PARK position.
Does the shift lever move out of the PARK position?
YES - Go to Testing for Intermittent Conditions and Poor Connections
NO - Go to Step 3
3
Turn OFF the ignition.
Disconnect the automatic transmission shift lock control switch.
Turn ON the ignition, with the engine OFF.
Attempt to move the shift lever out of the PARK position.
Does the shift lever move out of the PARK position?
YES - Go to Step 7
NO - Go to Step 4
4
Turn OFF the ignition.
Leave the automatic transmission shift lock control switch disconnected.
Connect a test lamp between the A/T shift lock control solenoid supply voltage circuit at the automatic transmission shift lock control solenoid and a good ground.
Turn ON the ignition, with the engine OFF.
Does the test lamp illuminate?
YES - Go to Step 10
NO - Go to Step 5
5
Turn OFF the ignition.
Connect a test lamp between the ignition 1 voltage circuit of the park lock solenoid and a good ground.
Turn ON the ignition, with the engine OFF.
Does the test lamp illuminate?
YES - Go to Step 6
NO - Go to Step 9
6
Turn OFF the ignition.
Connect a test lamp between the ignition 1 voltage circuit of the park lock solenoid and the park lock solenoid ground circuit.
Turn ON the ignition, with the engine OFF.
Does the test lamp illuminate?
YES - Go to Step 8
NO - Go to Step 11
7
Inspect for poor connections at the harness connector of the automatic transmission shift lock control switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
YES - Go to Step 14
NO - Go to Step 13
8
Inspect for poor connections at the harness connector of the park lock/automatic transmission shift lock control solenoid assembly. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
YES - Go to Step 14
NO - Go to Step 12
9
Repair the open or high resistance in the park lock solenoid ignition 1 voltage circuit. Refer to Circuit Testing or Wiring Repairs .
Did you complete the repair?
Go to Step 14
--
10
Repair short to battery positive voltage in the A/T shift lock control solenoid supply voltage circuit. Refer to Circuit Testing or Wiring Repairs .
Did you complete the repair?
Go to Step 14
--
11
Repair the open or high resistance in the park lock solenoid ground circuit. Refer to Circuit Testing or Wiring Repairs .
Did you complete the repair?
Go to Step 14
--
12
Important: Depress the button on the side of the shift lock actuator. With the button is depressed, cycle the plastic straw within the shift lever 3 to 5 times. The straw should move smoothly and freely except near the top of the travel where additional force will be required to mechanically actuate the park lock mechanism inside of the shift lock actuator. If there is stick/slip or abnormal friction while cycling the plastic straw or if the straw is altogether stuck in the lever, the entire control assembly (shifter and shift lock actuator) needs to be replaced. Refer to Transmission Control Replacement . If there is no abnormal friction, replace the shift lock actuator. Refer to Automatic Transmission Shift Lock Control Actuator Replacement .
Did you complete the replacement?
Go to Step 14
--
13
Replace the automatic transmission shift lock control switch. Refer to Stop Lamp Switch Replacement .
Did you complete the replacement?
Go to Step 14
--
14
Operate the system in order to verify the repair.
Did you correct the condition?
System OK

Hope this helps your out. I know the diagram and locator is a bit blurry but hopefully it gets what you need.
Drivers kick panel:
Front wiper 20A - Front wiper system Cigar 15A- Cigarette lighter Audio 10A- Audio, remote control mirror Air Bag 10A -Air bag diagnostics Stop lights- 15A -Rear brake light, high mounted stop light ECU B+ 10A - Shift lock actuator, transaxle controle module, radio, engine control module Room 10A - Interior light, clock, ignition key reminder, rear cargo area light switch ABS 10A- Anti lock brake system control unit ECU IG1 10A - Transaxle control module, shift lock actuator, ABS control unit, DRL unit Meter 10A - Instrument panel, back-up switch, electronics time control module, inhibit switch Turn signal 10A- Hazard switch ,front and rear turn lights, turn indicator IGN1 20A - Ignition switch ABS 30A- ABS pump motor TNS 30A- Tail light, license plate light COOL/FAN 30A- Cooling fan Cond/Fan 20A- A/C condenser fan Starter 15A- Start signal , Fuel pump Blower 25A- Blower Motor SR/ACC 10A - Ignition switch Hazard 15A - Hazard and turn signal light D/Lock 25A- Door locks ABS 30A - Anti lock brake system control P/W RH 20A- Power window motor right hand P/W LH 20A- Power window motor left hand IGN2 25A- Ignition Switch
Engine compartment :
Head 25A- headlights IG 2 30A- Ignition switch IG coil 15A -Ignition coil, condenser,generator IC regulator, diagnostic connector. O2 down 10A- Rear O2 sensor O2 up 10A- Front O2 sensor Fuel pump 10A -Fuel pump unit Injector 10A -Fuel injector ,camshaft positioning sensor, purge solenoid valve, EVAP, IAC actuator, Mass Airflow sensor, EGR stepper motor. fuel pump relay coil, vehicle speed sensor. A/Con 10A - A/C compressor controls, cooling fan BTN 30A- Brake light , high mounted stop light. Tail light LH 10A- License plate light, tail light , rear combo light, instrument panel illumination Tail light RH 10A-License plate light, tail light , rear combo light, instrument panel illumination Head low 15A- Headlight Head Hi 15A-Headlight Horn 15A- Horn

Inside kick panel

Here's the info from the service manual

"Fault Code: F9

Likely Failure Condition/Cause:
1. Door motor failure / jammed. Latch
motor switch failure.
2. Control software failure, or component
failure (relay stuck).
3. Wiring Problem.

Suggested Corrective Action:
1. Press CLEAR key.
2. If CLEAR key does not eliminate problem, turn off power for
30 seconds, then turn on power.
3. Check wiring of Lock Motor, and Lock Switch A and Door
Switch circuits.
4. Unplug P4, apply power (L1) directly to the Lock Motor, if the
motor does not rotate, replace Lock Motor Assembly. Plug
P4.
5. Check Lock Switch A for proper operation (do they open and
close, check with ohmmeter). The Lock Motor may be
powered as in above step to open and close Lock Switch. If
the Lock Switch is defective, replace Motor Lock Assembly.
6. If all above steps fail to correct situation, replace control."

Keyless Entry System Circuit Description
The Power Door Locks/Remote Keyless Entry control system provides several functions. The driver operates the vehicle door locks and rear window release from outside the vehicle using a hand-held radio transmitter. The transmitter sends coded signals to the remote control door lock receiver. The remote control door lock receiver detects and decodes the signal from the transmitter. The remote control door lock receiver issues signals to the body control module (BCM) through a serial data link. The BCM actuates relays to lock and unlock the doors and liftgate. The BCM can also release the liftglass. The power door lock switches provide manual control of the door locks.


Transmitter Programming
Important: Different keyless entry systems are used on General Motors vehicles. The parts are not interchangeable even though the parts may appear to be similar. Observe the back of the transmitter in order to properly identify the system. On 1998 S/T pickups and utilities, use a transmitter identified with GM/UTA preceding the part number.
With the driver door closed, hold down the power unlock button on the door panel.
Turn the ignition switch to the ON position.
Turn the ignition switch to the OFF position.
Turn the ignition switch to the ON position.
Turn the ignition switch to the OFF position.
Release the power unlock button on the door panel.
The remote control door lock receiver will respond in the following manner in order to indicate that the receiver is in the programming mode:
6.1. Locking the doors
6.2. Unlocking the doors
Important: All extra transmitters must be programmed at this time. When a new transmitter is programmed, it will deactivate the old transmitters.
Hold down the lock and unlock buttons on the transmitter until the remote control door lock receiver will respond in the following manner:
7.1. Locking the doors.
7.2. Unlocking the doors.
Repeat step 7 for each additional transmitter.
Turn the ignition switch to the ON position in order to exit the transmitter programming mode.

Ignition Lock Cylinder Control Actuator
If the vehicle is equipped with a floor mounted console gear shifter, it has a ignition lock cylinder control actuator system in the steering column as an added safety feature. The ignition lock cylinder control actuators purpose is to prevent the steering wheel from being locked when the transmission is in gear and the vehicle may still be moving. The column ignition lock system consists of a ignition lock cylinder control acutator, and a park position switch that is located in the A/T shift lock control switch. The ignition lock cylinder control acutator contains a pin that is spring loaded out to mechanically prevent the ignition key cylinder from being turned to the lock position when vehicle transmission is not in the Park position. If vehicle power is lost, and/or the transmission is not in the Park position the operator will not be able to turn the ignition key to the lock position and will not be able to remove the ignition key from the column.