If your rear brakes need adjusting, it's likely due to a malfunction in the self-adjusting mechanism or worn brake components. You will need to:
* Inspect the brake shoes and drums for wear. Excessive wear requires replacement of the shoes and potentially the drums.
* Check the parking brake cable for proper adjustment and function. A poorly adjusted parking brake can affect rear brake performance. This cable has an adjuster, but it's usually under the vehicle near the rear axle.
* Have a qualified mechanic diagnose the issue. Attempting to force adjustment on a self-adjusting system can cause damage. The problem might be something more significant than a simple adjustment.
In short, there's no easily accessible external adjuster; professional help is usually required for rear brake adjustments on a 2000 Chevy Tracker.
