If your emergency brake isn't working correctly, the problem likely lies in one of these areas:
* Low Brake Fluid: Check your brake fluid level in the master cylinder reservoir. Low fluid can affect braking performance, including the emergency brake.
* Worn Brake Pads (Rear): Worn rear brake pads will reduce the effectiveness of the emergency brake. This requires replacement.
* Malfunctioning Rear Calipers: A sticking or seized rear caliper will prevent the emergency brake from working properly. This may require repair or replacement.
* Parking Brake Cable (Internal): Though not externally adjustable, internal components of the parking brake system can degrade over time. This requires professional diagnosis and repair. It's unlikely to be the cause unless the issue is a complete failure of the parking brake to engage.
* Contamination or Corrosion: Corrosion or debris within the system can hinder its operation. A thorough inspection by a mechanic may be required.
What to do if your emergency brake isn't working:
1. Check the brake fluid level. Add fluid if necessary, but low fluid is usually a symptom of a bigger problem that needs attention.
2. Have your brakes inspected by a mechanic. A qualified mechanic can diagnose the specific problem and recommend the appropriate repair or replacement of components. Attempting to adjust something without proper understanding can lead to further damage. They have the tools to diagnose the correct problem.
In short: You don't adjust the emergency brake on a 2004 Blazer. You address the underlying cause of its malfunction.
