In truth, this is a video about how to replace and bleed a master cylinder on a C1500, 1990 5.7L to be specific. However, I do have information on how you can solve a spongy brake pedal on one of these trucks by replacing the master cylinder and booster with parts from a later model truck.

Here are those part #’s

Master Cylinder: M390259

Booster: 5471046

Direct Links

Master Cylinder: https://www.amazon.com/Dorman-M390259...

Booster: https://www.oreillyauto.com/detail/br...

The best place for answers to your automotive questions: http://www.ericthecarguy.com

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Thanks for watching!

Camera: Derek Sims & Eric Cook

Discussion about this video: https://www.ericthecarguy.com/kunena/...

Links

Line Wrenches: https://store.snapon.com/Open-End-and...

Plastic Plugs: https://parts.cat.com/en/catcorp/shop...

Silicone Spray: https://www.wd40specialist.com/produc...

Zep Brake Cleaner: http://www.drillspot.com/products/643...

Zep Brake Cleaner Sprayer: http://www.apmengineparts.com/829801....

Master Cylinder Bleeding Tool: https://www.jbtoolsales.com/thexton-8...

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Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information.  EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video.  Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result.  Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy®.