Lock System Does Not Unlock
WARNING: This page is about a different car, the 2004 Pontiac Sunfire and 2004 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
Lock System Does Not Unlock
| Step | Action | Yes | No |
|---|---|---|---|
| DEFINITION: The lock system does not allow the key to rotate out of the OFF position. | |||
| 1 | Did you review the Steering Wheel and Column Description and Operation? | Go to Step 2 | Go to Steering Wheel and Column Description and Operation |
| 2 | Verify that the lock system does not unlock. Does the lock system operate normally? |
System OK | Go to Step 3 |
| 3 | Inspect for an incorrect, worn, or damaged key. Is the key incorrect, worn, or damaged? |
Go to Step 7 | Go to Step 4 |
| 4 | Inspect for a faulty lock cylinder. Is the lock cylinder damaged? |
Go to Step 8 | Go to Step 5 |
| 5 | Inspect the steering column upper housing assembly for looseness. Is the housing assembly loose? |
Go to Step 9 | Go to Step 6 |
| 6 | Inspect the ignition switch assembly for damage. Is the ignition switch assembly damaged? |
Go to Step 10 | Go to Step 3 |
| 7 | Replace the key. Refer to Key and Lock Cylinder Coding
in General Information. Did you complete the repair? |
Go to Step 11 | - |
| 8 | Replace the lock cylinder. Refer to Ignition Lock Cylinder Replacement (Without Key) or Ignition Lock Cylinder Replacement (With Key) . Did you complete the repair? |
Go to Step 11 | - |
| 9 | Tighten the steering column upper housing assembly. Refer to Fastener Tightening Specifications . Did you complete the repair? |
Go to Step 11 | - |
| 10 | Replace the ignition switch assembly. Refer to Ignition Switch Replacement . Did you complete the repair? |
Go to Step 11 | - |
| 11 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |