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Q: My front brake lines bleed not my back ones.

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OK my front brake lines bleed but not my back ones
My car has an automatic transmission.

A: You may have to activate the rear anti-lock...

You may have to activate the rear anti-lock brakes using a scanner or using a special tool to hold the combination proportional valve open while bleeding them. You can try a vacuum or pressure style bleeder to see if it will work. If you want to have this checked for you, a certified technician from YourMechanic can come to your car's location to diagnose the brake system and perform a repair if needed.

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