thats correct proportion valve not checked
abs system and light turns and brake light when i pump it it goes away how do i bleed abs system
You may need a Tech1 scan tool to complete this.
Bleeding SystemNote : Prior to bleeding the brakes, the following procedure must be followed to ensure the front and rear displacement cylinder pistons are returned to the top most position.Start engine and allow it to run for at least 10 seconds (with foot off brake), this will cause the ABS to initialize itself. Make sure the ABS indicator lamp is "OFF" after about 3 seconds. If the lamp remains "ON," a Tech 1 must be used to diagnose the illumination of the indicator lamp.If lamp goes "OFF" and stays "OFF," repeat this procedure one more time. Using Tech 1 or T-100, enter the "Manual Control" function and "Apply" the front and rear motors. The entire brake system should now be bled following either "Pressure Bleeding" or "Manual Bleeding".Note : Use only DOT 3 brake fluid from a clean, sealed container. Do not use fluid from an open container that may be contaminated with water. Do not use DOT 5 brake fluid.
Manual BleedingNote : Use only DOT 3 brake fluid from a clean, sealed container. Do not use fluid from an open container that may be contaminated with water. Do not use DOT 5 brake fluid.Note : In the following steps, use a suitable container and/or shop cloths to catch fluid and prevent it from contacting any painted surfaces. Clean fluid reservoir cover and surrounding area.
Hydraulic Modulator/Master Cylinder Assembly
If there is still an issue you will need to replace the proportioning valve.Remember Im here if you ever need any further assistance please let me know I would be more then happy to help you .Hoped this helped.Please rate excellent service so I can get Credit for my help thanks. Bonuses greatly appreciated.