To find them, you'll need to:
1. Consult your owner's manual: This is the best resource. It should have a lubrication chart or diagram showing the locations of all grease fittings.
2. Look at a detailed parts diagram: Online parts retailers (like GMPartsDirect, etc.) often have diagrams that show the chassis and suspension components. These diagrams frequently indicate the location of grease zerks (fittings). You'll need to know your specific trim level and options to find the correct diagram.
3. Visually inspect the vehicle: Common areas to check include:
* Suspension: Control arm ball joints, tie rod ends, upper and lower ball joints (especially on 4x4 trucks), shackle pins (if equipped), and leaf spring pins (if equipped).
* Drivetrain: Universal joints (U-joints) on the driveshafts.
* Steering: Steering linkage components.
* Other: Some models might have grease fittings on other components like the brake calipers (though less common).
Important Note: Before attempting to grease your truck, ensure you have the correct grease. Using the wrong type of grease can damage components. Check your owner's manual for the recommended type. Also, it's a good idea to clean around the fittings before greasing to prevent contamination.
