System Specifications
| Rear Axle Lubricant | SAE 75W-90 Synthetic Axle Lubricant GM P/N 12378261 (Canadian P/N 10953455) or equivalent) meeting GM Specification 9986115 |
| Rear Axle Lubricant | SAE 75W-90 Synthetic Axle Lubricant GM P/N 12378261 (Canadian P/N 10953455) or equivalent) meeting GM Specification 9986115 |