* Ride Height: This is adjusted by changing the coils springs (replacing them with ones of a different spring rate) or by using spacers (to raise it). You *cannot* adjust the height of the factory coil springs themselves. If your truck is sagging, the springs are likely worn out and need replacement. Adding spacers is a relatively easy modification but can affect the handling and potentially put stress on other suspension components.
* Alignment: This involves adjusting the caster, camber, and toe angles. This is *not* something you typically do yourself. It requires specialized tools and expertise. Take it to a qualified alignment shop. Misaligned wheels will cause premature tire wear, poor handling, and could be unsafe.
* Shocks/Struts: Worn-out shocks/struts won't affect ride *height* but will dramatically impact the ride quality. They are simply replaced, not adjusted. This is a relatively straightforward DIY job for mechanically inclined individuals, but requires specialized tools for some models.
In short: If you want to adjust the ride height, you'll replace the springs or add spacers (generally not recommended without careful consideration of handling implications). If you have handling problems or uneven tire wear, you need a wheel alignment. If the ride is bouncy or harsh, you need new shocks or struts.
Important Considerations:
* Safety: Working on your suspension involves heavy components and potentially dangerous situations. If you're not comfortable working on your vehicle, take it to a qualified mechanic.
* Tools: Replacing springs or struts requires specialized tools like spring compressors (extremely dangerous if used incorrectly).
* Warranty: Modifying your suspension might void any remaining warranty on your vehicle.
Before attempting any adjustments, determine *what* specifically needs adjusting. Describing the issue (e.g., "My truck sits low on one side," "My steering wheel pulls to the right," "My truck bounces excessively") will help determine the proper course of action.
