Applying the proper lubrication may correct the following concerns
in many cases:
| • | Binding door lock cylinders |
| | Sticking door lock cylinders |
| • | Keys that are hard to insert |
| • | Keys that are hard to remove |
The recommended material for lubricating these components are in order
of preference:
| • | Lubricant GM P/N 12345120 (Canadian P/N 726548),
or the equivalent |
| • | Silicone spray GM P/N 1052276 (Canadian P/N 726548),
or the equivalent |
Penetrating lubricants, such as GM P/N 1052949 (Canadian
P/N 726548) and WD-40®, are not recommended because they wash out the
original lubrication. These lubricants will eventually evaporate and leave
little or no lubricating material. If you use these materials in order to
unfreeze or loosen the lock cylinder components, refer to steps 2
through 4 for the proper method of lubrication.
You may repair lock cylinders that freeze due to cold weather by using
the following procedure:
- Apply heat to the lock cylinder with a heat gun. Be careful not
to damage the painted surfaces.
- Hold the lock cylinder shutter open with a paper clip or similar
pointed tool.
- Force air into the lock cylinder using compressed air and a blow
gun attachment.
- While holding the lock cylinder shutter open, inject a small amount
of lubricant into the lock cylinder. Refer to the recommendations.
- Work the key into the lock cylinder several times.
- Wipe any excess lubrication residue from the key.
