BlackandBlue
Well-Known Member
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- #1
I just saw this story about Silverado brake failures.
Seems like everyday recall stuff except when you see the details. Brake system failure at low speeds resulting poor brake performance. AKA stiff pedal.
Instead of redesigning or fixing they are reprogramming the brake system to use a secondary (backup) system in case of a failure of the main system. Mostly low speed stuff they claim.
https://www.foxnews.com/auto/gm-recalling-3-4-million-trucks-for-brake-issue.amp
“The vacuum pump is lubricated with engine oil that flows through a filter screen. In some of the trucks, oil sludge or other debris can clog the screen, reducing oil flow and causing the pump's vacuum output to drop, Flores said.
The trucks, he said, have a secondary power brake assist system which works when there are problems with the main system, but it is limited at lower speeds. The reprogramming will activate the secondary system faster.
GM isn't replacing the pumps because pump failures are rare and already are covered by an extended warranty, Flores said. "This remedy will improve brake performance in any situation where brake vacuum drops," he said.”
Sounds legit. You will probably have brakes. I wonder how the backups, backup system works.
Seems like everyday recall stuff except when you see the details. Brake system failure at low speeds resulting poor brake performance. AKA stiff pedal.
Instead of redesigning or fixing they are reprogramming the brake system to use a secondary (backup) system in case of a failure of the main system. Mostly low speed stuff they claim.
https://www.foxnews.com/auto/gm-recalling-3-4-million-trucks-for-brake-issue.amp
“The vacuum pump is lubricated with engine oil that flows through a filter screen. In some of the trucks, oil sludge or other debris can clog the screen, reducing oil flow and causing the pump's vacuum output to drop, Flores said.
The trucks, he said, have a secondary power brake assist system which works when there are problems with the main system, but it is limited at lower speeds. The reprogramming will activate the secondary system faster.
GM isn't replacing the pumps because pump failures are rare and already are covered by an extended warranty, Flores said. "This remedy will improve brake performance in any situation where brake vacuum drops," he said.”
Sounds legit. You will probably have brakes. I wonder how the backups, backup system works.
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