I cant get the key out or lock steering column and the automatic transmission shift lever locks up in park. Now if I take the battery off every thing works fine. This sure seems like a reset problem.I run the car by not having it in the locked column position and get the shifter to work by putting a key in the hole furnished by chevy to bypass shift lock. thank you

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From wiring diagrams, schematic illustrations, spark plugs info, parts info, chassis number, valve time settings, step wise instructions, torque specs, error/fault codes, engine info, to every single minute parts, you get everything in there you can't imagine how detailed it is

Is it shifter on the floor ?
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. The ignition lock cylinder control actuator's purpose is to prevent the ignition key from being turned to the OFF position 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 actuator , and a park position switch that is located in the A/T shift lock control switch. The ignition lock cylinder control actuator 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.

GM had problems with these ! Has a TSB - technical service bulletin !
Automatic Transmission Shift Lock Control Description and Operation
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 solenoid (serviced as the automatic transmission shift lock actuator), as well as the body control module (BCM) and the engine control module (ECM). The shift lock solenoid is located within the floor shift control assembly with vehicles equipped with floor shift.
• The BCM controls the voltage to the shift lock control solenoid through the shift lock control solenoid controlled voltage circuit. The following conditions must be met before the BCM will remove voltage from the shift lock solenoid:
- The ignition is in the ON position.
- The engine control module (ECM) sends an input via GMLAN serial data to the BCM indicating the transmission is in the PARK position.
- The BCM determines the brake pedal is applied according the brake pedal position.
Since the shift lock control solenoid is permanently grounded, the BCM supplies voltage to the automatic transmission shift lock control solenoid, mechanically locking the shift lever in the PARK position as the solenoid energizes. When the brake pedal is applied, the BCM turns the control voltage output of the shift lock control solenoid OFF, de-energizing the shift lock control solenoid. The de-energized solenoid releases the mechanical lock allowing the driver to move the shift lever out of the PARK position. When the transmission is out of the PARK position, the shift lock control solenoid remains de-energized.
During remote start operation, the BCM will energize the shift lock control circuit, locking the shift lever in the PARK position.
Replaced shifter on a cobalt , broken plastic part inside , wouldn't press on micro switch to disengage ! Found replacement shifter at auto slavage yard .$20.00 US

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:
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The automatic transmission shift lock control solenoid.

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The automatic transmission shift lock control switch.

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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?

Most if not all vehicles have a 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. Or it has
Linear Shift Assembly: If the vehicle is equipped with a column mounted gear shift, it has a linear shift assembly on the steering column. The linear shift assembly has a cable that runs from the linear shift assembly to the ignition lock cylinder case. The purpose of this cable is to prevent the ignition key from being turned to the OFF position when the transmission is in gear and the vehicle may still be moving. The linear shift assembly cable 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.
Your best bet is to take it to a ASE certified repair shop or the dealer ! The fix involves taking the steering column apart an or the floor shifter assembly ! Also electrical test to determine what is the problem !
Your

The ignition key must be in the key cylinder for cylinder removal. The key cylinder must be removed first before removing ignition switch.REMOVAL 1. Disconnect negative battery cable at battery. 2. If equipped with an automatic transmission, place shifter in PARK position. 3. Rotate key to ON position.4. A release tang is located on bottom of key cylinder.5. Position a small screwdriver or pin punch into tang access hole on bottom of steering column lower cover.INSTALLATION 1. If equipped with an automatic transmission, place shifter in PARK position. 2. Position key cylinder into steering column as it would normally be in the ON position. 3. Press key cylinder into column until it snaps into position. 4. Check mechanical operation of switch. Automatic Transmission: Be sure transmission lever is locked in PARK position after key removal. If key is difficult to rotate or is difficult to remove, the shift lever-to-steering column cable may be out of adjustment or defective. If key can be removed, release lever mechanism may be defective. Release lever mechanism is not serviced separately. If repair is necessary, the steering column must be replaced. 5. Connect negative cable to battery. 6. Check electrical operation of switch.

It sounds like the shift tube bushings are worn out. There are usually 2 u shaped clamps that have nylon bushings that hold the shift tube to the steering clumn. If loose, that throws off the shift position, could be btween 2 gears at once, and throws off the park - neutral safety switch. Fix that first.


Item Part Number Description 1 14A664 Air Bag Sliding Contact 2 3530 Upper Steering Column Shroud 3 3518 Steering Column Bearing Sleeve 4 3517 Steering Column Bearing 5 3511 Steering Column Lock Cylinder Housing 6 13K359 Multi-Function Switch 7 N808114 Pin 8 N805857 Steering Column Release Lever Pin 9 3D544 Steering Column Release Lever 10 3F609 Tilt Wheel Handle and Shank 11 7361 Column Shift Selector Lever Plunger 12 7210 Gearshift Lever 13 3D657 Steering Column Shaft 14 7B071 Transmission Control Selector Lever Plunger Spring 15 7G357 Gearshift Lever Pin 16 7212 Transmission Column Shift Selector Tube 17 N806582 Tilt Column Pivot Screw 18 7C464 Transmission Control Selector Lever Spring Clip 19 7E400 Gearshift Tube Bushing Clamp 20 - Spacer (Fixed Column) 21 3E729 Steering Shaft (Fixed Column) 22 3F527 Lever Assembly (Manual Transmission) 23 3F530 Pin (Manual Transmission) 24 3F752 Brake Shift Interlock Solenoid 25 7335 Gearshift Lever Socket Bushing 26 7A216 Transmission Shift Selector Position Insert 27 7302 Transmission Selector Lever Arm and Support 28 7E395 Shift Cable and Bracket 29 7210 Gearshift Lever 30 3E691 Steering Column Shift Lock Pawl 31 7W441 Gearshift Lever Pin 32 3676 Steering Column Instrument Panel Bracket 33 3D681 Steering Column Lower Bearing Retainer 34 3517 Steering Column Bearing Sleeve 35 3L539 Steering Column Bearing Tolerance Ring 36 3C674 Steering Column Lower Bearing Spring 37 3C131 Sensor Ring 38 3518 Steering Column Bearing 39 N806423-S56 Steering Column Retaining Nuts 40 14A163 Wiring Harness Retainer 41 3F723 Steering Actuator Housing 42 3B663 Steering Column Lock Lever Pin 43 11572 Ignition Switch 44 3D655 Steering Column Position Spring 45 3D653 Steering Column Locking Lever (LH) 46 3B768 Steering Column Position Lock Spring 47 3B662 Steering Column Locking Lever (RH) 48 3E715 Lower Steering Column Lock Actuator 49 3E696 Steering Column Lock Spring 50 3E691 Steering Column Shaft Lock Pawl 51 3E723 Upper Steering Column Lock Lever Actuator 52 3E695 Steering Column Lock Cam 53 3D656 Steering Column Tilt Flange Bumper 54 14A163 Wiring Harness Retainer 55 391727-S304 Shroud Screws 56 3530 Steering Column Shroud 57 3E717 Steering Column Lock Gear 58 3E700 Steering Column Lock Housing Bearing 59 3C610 Bearing Retainer 60 11582 Ignition Switch Lock Cylinder 61 3L539 Steering Column Tolerance Ring 62 3520 Steering Column Upper Bearing Spring 63 3C610 Snap Ring

This Is Park Lock Cable Failure here is the Replacment Procedure

Park Lock Cable Replacement

Removal Procedure

1. Disconnect the negative battery cable.

1. Remove the console.
2. Remove the knee bolster.
3. Loosen the lower steering column bracket bolts.
4. Lower the steering column.
5. Place the transmission shift lever in the PARK position. Important: Do not proceed to the next step with the key in any position other than the RUN position.
6. Turn the ignition key to the RUN position.
7. Insert a screwdriver blade into the slot provided in the ignition switch inhibitor.
8. Depress the cable latch. Pull the control cable from the inhibitor.

1. Push the cable connector lock button at the shifter base to the up position.
2. Unsnap the cable from the park/lock lever pin.
3. Depress the two cable latches. Remove the control cable latches from the automatic transmission control.
4. Remove the control cable clips.

Installation Procedure

Important: When installing a new park/lock cable, keep the shipping cover gauge attached until you are instructed to detach it. The shipping cover gauge will aid in the proper positioning of the cable.

1. Ensure that the cable lock button is in the up position. Place the shift lever in the PARK position.
2. Snap the control cable connector into the automatic transmission control.
3. Place the ignition key in the RUN position. Important: Do not insert the cable with the key in any position other than the RUN position.

1. Snap the control cable into the inhibitor housing until the snap lock is seated.
2. Remove the shipping cover gauge.
3. Turn the key to the LOCK position.

1. Snap the control cable end onto the shift park/lock lever pin.
2. Push the cable connector hose forward in order to remove any slack.
3. With no load applied to the connector nose, snap the cable connector lock button down. Important: Inspect for proper operation of the park/lock control cable before installing the steering column to the instrument panel.
4. Raise and connect the steering column.
5. Tighten the lower steering column bracket bolts.
6. Install the knee bolster.

bad battery and if i don't drive the car couple of days then it goes dead ??? It's not the battery , you have a parasitic draw on the electrical system , that is what is draining the battery . Could be the instrument cluster .Watch this video . What's giving out 13 volts or when ? With the engine running hooking a volt meter to the battery the voltage should be 13 - 14 volts , depending on the load on the electrical system.
Chevrolet Truck Battery Dies Overnight Part

Does the vehicle have column or floor mounted gear selector ? Both have a safety feature Electronic Park Lock (EPL)/Ignition Lock Cylinder Control Actuator:
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.
Linear Shift Assembly: If the vehicle is equipped with a column mounted gear shift, it has a linear shift assembly on the steering column. The linear shift assembly has a cable that runs from the linear shift assembly to the ignition lock cylinder case. The purpose of this cable is to prevent the ignition key from being turned to the OFF position when the transmission is in gear and the vehicle may still be moving. The linear shift assembly cable 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.

Removal & Installation


Blade-type connector ignition switch on steering column, 1980 and later models

1. Disconnect the battery ground cable.
   
2. Remove steering column shroud and lower the steering column.
   
3. Disconnect the switch wiring at the multiple plug.
   
4. Remove the two nuts that retain the switch to the steering column.
   
5. Lift the switch vertically upward to disengage the actuator rod from the switch and remove switch.
   
6. When installing the ignition switch, both the locking mechanism at the top of the column and the switch itself must be in LOCK position for correct adjustment.
   

To hold the mechanical parts of the column in LOCK position, move the shift lever into PARK (with automatic transmissions) or REVERSE (with manual transmissions), turn the key to LOCK position, and remove the key. New replacement switches, when received, are already pinned in LOCK position by a metal shipping pin inserted in a locking hole on the side of the switch.

1. Engage the actuator rod in the switch.
   
2. Position the switch on the column and install the retaining nuts, but do not tighten them.
   
3. Move the switch up and down along the column to locate the mid-position of rod lash, and then tighten the retaining nuts.
   
4. Remove the locking pin, connect the battery cable, and check for proper start in PARK or NEUTRAL.
   

Also check to make certain that the start circuit cannot be actuated in the DRIVE and REVERSE position.

1. Raise the steering column into position at instrument panel. Install steering column shroud.
   

Ignition Lock Cylinder REMOVAL & INSTALLATION With Key

1. Disconnect the battery ground.
2. On tilt columns, remove the upper extension shroud by unsnapping the shroud from the retaining clip at the 9 o'clock position.
3. Remove the trim shroud halves.
4. Unplug the wire connector at the key warning switch.
5. Place the shift lever in PARK and turn the key to ON .
6. Place a 1⁄8 in. (3mm) wire pin in the hole in the casting surrounding the lock cylinder and depress the retaining pin while pulling out on the cylinder.
7. When installing the cylinder, turn the lock cylinder to the RUN position and depress the retaining pin, then insert the lock cylinder into its housing in the flange casting. Assure that the cylinder is fully seated and aligned in the interlocking washer before turning the key to the OFF position. This will allow the cylinder retaining pin to extend into the cylinder cast housing hole.
8. The remainder of installation is the reverse of removal.

Non-Functioning Cylinder or No Key Available FIXED COLUMNS

1. Disconnect the battery ground.
2. Remove the steering wheel.
3. Remove the turn signal lever.
4. Remove the column trim shrouds.
5. Unbolt the steering column and lower it carefully.
6. Remove the ignition switch and warning buzzer and pin the switch in the LOCK position.
7. Remove the turn signal switch.
8. Remove the snapring and T-bolt nuts that retain the flange casting to the column outer tube.
9. Remove the flange casting, upper shaft bearing, lock cylinder, ignition switch actuator and the actuator rod by pulling the entire assembly over the end of the steering column shaft.
10. Remove the lock actuator insert, the T-bolts and the automatic transmission indicator insert, or, with manual transmissions, the key release lever.
11. Upon reassembly, the following parts must be replaced with new parts:
    • Flange
    • Lock cylinder assembly
    • Steering column lock gear
    • Steering column lock bearing
    • Steering column upper bearing retainer
    • Lock actuator assembly
12. Assembly is a reversal of the disassembly procedure. It is best to install a new upper bearing. Check that the truck starts only in PARK and NEUTRAL.