Answer
Jun 03, 2024 - 09:41 PM
Hey there, Barry!
It sounds like you've already tackled the usual suspects with your brake system issue. Given that you've replaced the pads, rotor, brake hose, and caliper, and bled the system, yet the problem persists, here are a few additional things to consider:
1.) Parking Brake Mechanism: If your Sierra has a separate parking brake system integrated into the rear brakes, ensure it's not partially engaged or misadjusted. Sometimes the parking brake cable can stick or the mechanism can become corroded and not release fully.
2.) Brake Fluid Contamination: Although you bled the system, if there's any contamination in the brake fluid, it could cause the caliper to hang up. Ensure the brake fluid is clean and of the correct type.
3) ABS/Traction Control System: It's less common, but a malfunctioning ABS module or traction control system can cause individual brakes to engage incorrectly. A diagnostic scan can reveal any fault codes related to these systems.
4.) Wheel Bearing: Sometimes, a wheel bearing issue can mimic brake problems by causing drag. Check if the wheel bearing on the left rear is in good condition.
5.) Brake Line Issues: A kink or internal collapse in the brake line that wasn't visible might still be a possibility. Though you replaced the hose, ensure the hard line is also in good shape.
Since the rotor gets extremely hot, it's a clear sign of excessive friction. I'd recommend starting with a thorough inspection of the parking brake system and getting a diagnostic scan to rule out ABS or traction control issues. If everything checks out, you might also want to revisit the caliper installation to ensure it moves freely on its slides.
You may need some parts in the process, click this link to be directed to our website where your vehicle information has already been entered. Simply enter the part's name into the search field to get started.
Good luck getting your brakes back to their smooth, release-happy selves in no time!
It sounds like you've already tackled the usual suspects with your brake system issue. Given that you've replaced the pads, rotor, brake hose, and caliper, and bled the system, yet the problem persists, here are a few additional things to consider:
1.) Parking Brake Mechanism: If your Sierra has a separate parking brake system integrated into the rear brakes, ensure it's not partially engaged or misadjusted. Sometimes the parking brake cable can stick or the mechanism can become corroded and not release fully.
2.) Brake Fluid Contamination: Although you bled the system, if there's any contamination in the brake fluid, it could cause the caliper to hang up. Ensure the brake fluid is clean and of the correct type.
3) ABS/Traction Control System: It's less common, but a malfunctioning ABS module or traction control system can cause individual brakes to engage incorrectly. A diagnostic scan can reveal any fault codes related to these systems.
4.) Wheel Bearing: Sometimes, a wheel bearing issue can mimic brake problems by causing drag. Check if the wheel bearing on the left rear is in good condition.
5.) Brake Line Issues: A kink or internal collapse in the brake line that wasn't visible might still be a possibility. Though you replaced the hose, ensure the hard line is also in good shape.
Since the rotor gets extremely hot, it's a clear sign of excessive friction. I'd recommend starting with a thorough inspection of the parking brake system and getting a diagnostic scan to rule out ABS or traction control issues. If everything checks out, you might also want to revisit the caliper installation to ensure it moves freely on its slides.
You may need some parts in the process, click this link to be directed to our website where your vehicle information has already been entered. Simply enter the part's name into the search field to get started.
Good luck getting your brakes back to their smooth, release-happy selves in no time!
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