2009 Pontiac Torrent Owner's Manual - Page 326

Carrier Assembly-Differential (Rear Drive Module) When to Check and Change Lubricant Refer to the Maintenance Schedule to determine how often to check the lubricant and when to change it. See Scheduled Maintenance on page 6-4. How to Check Lubricant PTU for 3.6L V6 Model A. Fill Plug B. Drain Plug To get an accurate reading, the vehicle should be on a level surface. If the level is below the bottom of the filler plug hole, you'll need to add some lubricant. Add enough lubricant to raise the level to the bottom of the filler plug hole, located on the transfer case. What to Use Refer to the Maintenance Schedule to determine what kind of lubricant to use. See Recommended Fluids and Lubricants on page 6-13. 5-42 AWD Differential Case for 3.4L and 3.6L V6 Models A. Fill Plug B. Drain Plug