The power steering fluid reservoir on a 1999 Pontiac Grand Prix GTP is typically located
under the hood, near the firewall, and often has a cap that's clearly marked "Power Steering Fluid" or has a power steering pump icon. It's usually a small, clear or translucent reservoir so you can see the fluid level.
However, don't rely solely on this general description. Consult your owner's manual for the exact location and instructions. The manual will have diagrams and specific information for your particular vehicle model. Improperly adding power steering fluid can damage the system.
