If you have been taking your Geo Tracker through some rough road conditions (or off-road conditions), then check your Geo shocks periodically. Making sure your Geo shocks are in top condition is a practical matter of car maintenance that can spare you big repair bills from worn-out tires, poor brake performance or a faulty suspension system. In addition, checking your Geo shocks is an essential safety measure. After all, worn-out and corroded shocks can increase braking distances - which is a major safety hazard, particularly in rainy conditions. Tired shocks will prematurely wear out your tires and increase the odds of aquaplaning in the rain. What is the job of your Geo shocks? They manage the movement of the suspension system, and the action of the springs in particular. Your Geo shocks maintain stability of the chassis and body even when bumps and dips in the road will leave the wheels pumping up and down. Shock absorbers are designed to absorb and control the vertical movement of your vehicle's springs. Check your Geo shocks every 12,000 miles or so. Does the car roll or sway when you turn? Does the front end dive when you brake, or the rear end squat when you accelerate? Test the shocks by bouncing the car up and down at its bumper. If you see any of those signs, it's time to order new Geo shocks through car-stuff.com.