My 2003 chevy impala ignition was locked up and my friend drilled out my ignition lock cylinder and drilled the ignition switch connecter so I took out my whole ignition is there any way I can start m

return switch and get correct one and the new cylinder and key were they flashed to the vehicle---- 30 minute by-pass ?

If u are talking about the lock cylinder housing unit pin location well its in the housing unit right in the middle u have to drill hole in housing to get to it good luck and go slow

Ignition and Start Switch Replacement
Removal Procedure
Disconnect the battery ground cable. .
Remove the steering column filler panel.
Remove the knee bolster bracket.
Remove the instrument panel (I/P) cluster trim panel.
Remove the ignition switch bolts.
Lower the ignition switch away from the instrument carrier.
Insert the key into the ignition lock cylinder. Turn the key to the ON/RUN position.
Depress the transaxle park/lock cable retainer to release. Pull to remove the park/lock cable from the ignition switch.
Important: The Passlock? electrical connector cannot be removed until the lock cylinder is removed.

Depress and hold the detent on the bottom of the ignition switch in order to release the ignition lock cylinder. Remove the ignition lock cylinder with the key.
Disconnect the Passlock? electrical connector.
Disconnect the electrical connectors.
Important: Ignition switch lock cylinder that won't rotate or is seized.

Perform the following procedure if the ignition switch lock cylinder is seized or won't rotate.
12.1. Protect the immediate work area with suitable material such as clean shop towels or a clean fender cover.

12.2. Locate the surface for the ignition switch lock cylinder release button (2) on the plastic ignition switch housing and center punch a location (1) on the "rib" approximately 3/8 inch reward (toward the key entry end) from the cylinder release button.

12.3. Carefully drill a hole through the plastic housing with a 1/8 inch drill bit.

12.4. Carefully drill a larger hole at the pilot location, and slightly into the ignition switch lock cylinder surface to break the release button retaining spring using a 9/32 inch drill bit.

12.5. Remove portions of the broken spring from the hole using a small suitable tool.

12.6. Grasp the ignition switch lock cylinder and remove it from the switch housing.

12.7. Remove any plastic "flash" from the drilling operation, and using compressed air blow out the ignition switch assembly.

12.8. Follow service manual procedures when cylinder cording is required. Refer to Key and Lock Cylinder Coding in General Information.

Installation Procedure
If the lock cylinder would not rotate or was seized, perform the following procedure:
1.1. Install the new ignition switch lock cylinder as required by rotating both the cylinder and the ignition switch to the ON position.

1.2. Push the ignition switch lock cylinder into the ignition switch housing until fully seated.

1.3. You may have to slightly depress the release button as the button passes by the 9/32-in hole previously drilled in the ignition switch housing.
Connect the electrical connectors.
Connect the Passlock? electrical connector.
Connect the park/lock cable to the ignition switch Turn the key to the ON/RUN position. Install the ignition lock cylinder into the ignition switch. If you turned the key slightly while removing the lock cylinder, you may have to align the white colored ignition switch rotor (1) with the lock cylinder (2). You can rotate the ignition switch rotor (1) with your finger.
Remove the key
Position the ignition switch to the instrument carrier.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Install the ignition switch bolts.
Tighten

Tighten the bolts to 10 N?m (89 lb in).

Install the trim plate bezel to the I/P cluster. Refer to Trim Plate Bezel Replacement - Instrument Panel (I/P) Cluster .
Install the knee bolster bracket. Refer to Bracket Replacement - Knee Bolster .
Install the steering column filler panel. Refer to Steering Column Filler Replacement .
Connect the battery ground cable. Refer to Battery Negative Cable Disconnect and Connect Procedure in Engine Electrical.

try this install the new key in the ignition switch. turn on the ignition switch to the on position for 10 minutes.when the system led lock light disappear.turn off the ignition switch for 5 seconds.then start the engine.still dont start.try this procedure few more times.if car still dont crank and you see the pad lock symbols.the dealership will have to reprogram the new key and body control module.

Hello and welcome, inside the lock cylinder is a sensor called a pass lock sensor. this sensor is part of the theft system. when you drilled out the lock cylinder, you damaged the pass lock sensor. the only thing you can do, is replace the entire lock cylinder, and the theft system will have to be relearned

Ignition Lock Cylinder REMOVAL & INSTALLATION Functional Lock The following procedure applies to vehicles that have functional lock cylinders. Such cylinders either have a key available or known key numbers from which a key can be made.

1. Disconnect the negative battery cable.
2. Turn the lock cylinder key to the RUN position.
3. Using a 1?8 in. (3mm) diameter wire pin or a small drift, depress the lock cylinder retaining pin through the access hole in the upper steering column shroud (under the ignition lock cylinder) while pulling out on the lock cylinder. Remove the lock cylinder from the column. Fig. 1: Using the key, turn the ignition lock cylinder to the RUN position, then depress the retaining pin using a wire pin or small drift
   To install:
   
4. Install the lock cylinder by turning it to the RUN position and depressing the retaining pin. Insert the lock cylinder into its housing. Make sure the cylinder is fully seated and aligned in the interlocking washer before turning the key to the OFF position. This will permit the cylinder retaining pin to extend into the cylinder housing.
5. Rotate the lock cylinder using the lock cylinder key, to ensure correct mechanical operation in all positions.
6. Connect the negative battery cable.

Non-Functional Lock The following procedure applies to vehicles in which the ignition lock is inoperative and the lock cylinder cannot be rotated due to a lost or broken key, unknown key number or a lock cylinder cap that has been damaged and/or broken to the extent that the lock cylinder cannot be rotated. 1986-90 VEHICLES

1. Disconnect the negative battery cable.
2. Remove the steering wheel. For details, please refer to the procedure located earlier in this section.
3. Remove the two trim shroud halves after removing the three attaching screws.
4. Disengage the electrical connector from the key warning switch.
5. Using a 1?8 in. (3mm) diameter drill, carefully drill out the retaining pin, being careful not to drill deeper than 1?2 in. (13mm).
6. Place a suitable chisel at the base of the ignition lock cylinder cap, then, using a suitable hammer, strike the chisel with sharp blows to break the cap away from the lock cylinder.
7. Using a 3?8 in. (10mm) diameter drill, carefully drill down the middle of the ignition key slot approximately 1 3?4 in. (44mm) until the lock cylinder breaks loose from its breakaway base. Remove the lock cylinder and drill shavings from the lock cylinder housing.
8. Remove the retainer, washer, ignition switch and actuator. Thoroughly clean all the drill shavings from the casting.
9. Inspect the lock cylinder housing for damage from the removal operation. To install:
   
10. Replace the lock cylinder housing if it was damaged.
11. Install the actuator and ignition switch.
12. Install the trim and electrical parts.
13. Install a new ignition lock cylinder.
14. Install the steering wheel. For details, please refer to the procedure located earlier in this section.
15. Connect the negative battery cable.
16. Check the lock cylinder operation.

1991-95 VEHICLES

1. Disconnect the negative battery cable.
2. Remove the steering wheel.
3. Using locking pliers, twist the cylinder cap until it separates from the lock cylinder.
4. Using a 3?8 in. (10mm) diameter drill bit, drill down the middle of the ignition lock key slot approximately 1 3?4 in. (44mm) until the lock cylinder releases from its breakaway base. Remove the lock cylinder and drill shavings from the lock cylinder housing.
5. Remove the retainer, washer, ignition switch and actuator. Thoroughly clean all drill shavings and other foreign materials from the casting.
6. Inspect the lock cylinder housing for damage from the removal operation. If the housing is damaged, it must be replaced. To install:
   
7. Replace the lock cylinder housing, if damaged.
8. Install the actuator and ignition switch.
9. Install the trim and electrical parts.
10. Install the ignition lock cylinder.
11. Install the steering wheel.
12. Connect the negative battery cable, then check the lock cylinder operation.

If your key is worn try getting a new one cut.
The ignition lock cylinder and keys do not contain any coded electronic components. The lock cylinder housing contains the coded electronic components. Changing an ignition lock cylinder or replacing a key is a purely mechanical process which does not affect the vehicle theft deterrent system. To replace an existing key, simply cut a new key to match the existing one. If no keys are available, the lock cylinder must be changed. To change the lock cylinder, simply replace the existing lock cylinder with one of the same type.
If you are unable to operate the ignition cylinder with a new key then you will probably need to replace the cylinder and switch.Replacement of the switch involves reprogramming
The system may be programmed with or without a scan tool.
There is a way to get the cylinder out without replacing the switch but this procedure should be performed by a qualified GM technician as it involves removal of the switch and some precise drilling.

Someone may have tried to steal the car and damaged the lock's internal pins. Replace the entire lock with new.

Ignition and Start Switch Replacement
Removal Procedure
Disconnect the battery ground cable. Refer to Battery Negative Cable Disconnect and Connect Procedure in Engine Electrical.
Remove the steering column filler panel. Refer to Steering Column Filler Replacement .
Remove the knee bolster bracket. Refer to Bracket Replacement - Knee Bolster .
Remove the instrument panel (I/P) cluster trim panel. Refer to Trim Plate Bezel Replacement - Instrument Panel (I/P) Cluster .
Remove the ignition switch bolts.
Lower the ignition switch away from the instrument carrier.
Insert the key into the ignition lock cylinder. Turn the key to the ON/RUN position.
Depress the transaxle park/lock cable retainer to release. Pull to remove the park/lock cable from the ignition switch.
Important: The Passlock? electrical connector cannot be removed until the lock cylinder is removed.

Depress and hold the detent on the bottom of the ignition switch in order to release the ignition lock cylinder. Remove the ignition lock cylinder with the key.
Disconnect the Passlock? electrical connector.
Disconnect the electrical connectors.
Important: Ignition switch lock cylinder that won't rotate or is seized.

Perform the following procedure if the ignition switch lock cylinder is seized or won't rotate.
12.1. Protect the immediate work area with suitable material such as clean shop towels or a clean fender cover.

12.2. Locate the surface for the ignition switch lock cylinder release button (2) on the plastic ignition switch housing and center punch a location (1) on the "rib" approximately 3/8 inch reward (toward the key entry end) from the cylinder release button.

12.3. Carefully drill a pilot hole through the plastic housing with a 1/8 inch drill bit.

12.4. Carefully drill a larger hole at the pilot location, and slightly into the ignition switch lock cylinder surface to break the release button retaining spring using a 9/32 inch drill bit.

12.5. Remove portions of the broken spring from the hole using a small suitable tool.

12.6. Grasp the ignition switch lock cylinder and remove it from the switch housing.

12.7. Remove any plastic "flash" from the drilling operation, and using compressed air blow out the ignition switch assembly.

12.8. Follow service manual procedures when cylinder cording is required. Refer to Key and Lock Cylinder Coding in General Information.

Installation Procedure
If the lock cylinder would not rotate or was seized, perform the following procedure:
1.1. Install the new ignition switch lock cylinder as required by rotating both the cylinder and the ignition switch to the ON position.

1.2. Push the ignition switch lock cylinder into the ignition switch housing until fully seated.

1.3. You may have to slightly depress the release button as the button passes by the 9/32-in hole previously drilled in the ignition switch housing.
Connect the electrical connectors.
Connect the Passlock? electrical connector.
Connect the park/lock cable to the ignition switch Turn the key to the ON/RUN position. Install the ignition lock cylinder into the ignition switch. If you turned the key slightly while removing the lock cylinder, you may have to align the white colored ignition switch rotor (1) with the lock cylinder (2). You can rotate the ignition switch rotor (1) with your finger.
Remove the key
Position the ignition switch to the instrument carrier.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Install the ignition switch bolts.
Tighten

Tighten the bolts to 10 N?m (89 lb in).

Install the trim plate bezel to the I/P cluster. Refer to Trim Plate Bezel Replacement - Instrument Panel (I/P) Cluster .
Install the knee bolster bracket. Refer to Bracket Replacement - Knee Bolster .
Install the steering column filler panel. Refer to Steering Column Filler Replacement .
Connect the battery ground cable. Refer to Battery Negative Cable Disconnect and Connect Procedure in Engine Electrical.

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