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Home >> Hummer >> 2003 >> H2 >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Steering Wheel And Column >> Diagnostic Information and Procedures >> Lock System Does Not Unlock

Lock System Does Not Unlock

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 ignition lock cylinder case assembly for looseness.
Is the ignition lock cylinder case 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 .
Did you complete the repair?
Go to Step 11  -
8 Replace the lock cylinder. Refer to Ignition Lock Cylinder Replacement .
Did you complete the repair?
Go to Step 11  -
9 Tighten the ignition lock cylinder case assembly. Refer to Fastener Tightening Specifications .
Did you complete the repair?
Go to Step 11  -
10 Replace the ignition switch. 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