Lock Cylinder Tumbler Repair Kits - keywords coding column cylinder door glove hard ignition information left key kit lock rotate spare spring steering stick tire tumbler

This PI is being updated to add additional models and add tumbler information. Please discard PIT4123.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Lock cylinder repair kits are now available, for the new 2007 Full Size Utilities, from GM SPO. The kits contain all parts, including tumblers, to make a complete cylinder change with any key code sequence.

The following service kits are now available:

Ignition Lock Cylinder: P/N: 15794826

LH Door Lock Cylinder: P/N: 15904634

RH Door Lock Cylinder: P/N: 12533510 ( Note: Only Available On Vehicles Without Remote Keyless Entry )

Glove box Lock Cylinder: P/N: 15794823

Spare Tire Lock Cylinder: P/N: 15794819

Note: When coding one of the lock cylinders listed above, you may notice that the tumblers are labeled with letters and numbers ( Example C1 ,D4, A2, B1 etc). Please disregard the letters that are stamped on the tumblers and only use the number that is listed after the letter. The letter is just the stamping batch identifier that was left on the tumbler.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.