The mechanical components of the door are lubricated during assembly. If additional lubrication is required, use the following lubricants:
| • | Lubricate the door lock cylinders using one of the following lubricants: |
| - | Multi-Purpose Lubricant GM P/N 12345120 or the equivalent |
| - | Synthetic 5W-30 engine oil |
| • | Lubricate the door hinge pins and rollers at the normal service intervals using SAE 30 engine oil. |
| • | Lubricate the remainder of all door hardware mechanisms (except the lock assemblies) using one of the following lubricants: |
| - | Lubriplate Spray-Lube A GM P/N 1052349 |
| - | Lubriplate Auto-Lube A GM P/N 1052196, or the equivalent |