1999 GMC Seirra, Chevy Silverado, ABS light on, pump short circuit

OK Guys Having problems with the ABS pump on Chevy Silverado, Sierra... Check with your dealer, it may be under warranty because abs systems have a longer warranty. If not they will try to sell you a $500 ABS pump.

Symptoms: ABS light on. Code is ABS pump circuit short/open

Problem: Two wires connected to the abs motor badly corroded. Red and a black wire.

Tools: Floor jack

13mm wrench 8mm wrench Large flat head screw driver Solder gun/solder/flux Creeper

Fix:

  1. Locate ABS pump. Below drivers door behind frame rail you will see a ABS pump. It has all the brake lines going to one side of it.

2.Remove the bracket that holds the ABS pump. The bracket is healed on buy three 13mm bolts (head facing the outside part of the frame. Gently pry the abs pump towards the center of the truck. Now pry the abs bracket off the abs pump. This can be tricky, you will need to pry and pull to get it off. Be sure not to kink brake lines!!!

2.With the bracket off the abs pump, disconnect the plug that runs to the motor. Remove the ABS motor. The abs motor is round and black and is healed in by two 8mm bolts. It is located at the opposite side of the brake lines. The 8mm can strip easy so have a good 5/16 socket handy. Now the motor will slide out.

3.Have a good look at the two wires (red black) connected to the pump. They should be corroded(green). This is where your problem is!!! Note where the red/black wires go on the pump because you will have to disconnect and solder the wires back on the same post. To fix it, you have to brake the ceramic coding off the wires, just at the end closes to the motor. Brake the ceramic by Squeezing the ceramic with pliers or cutters. Do not cut right threw!!! You will see the copper post that you have to solder your wires too.

4.Soder the two wires to the proper post. I used liquid tape to insolate the wires. You can also use silicone. Put everything back together. That's it your done!

e-mail or call Any questions you can contact me at

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Laurie Osmond Halifax NS snipped-for-privacy@ns.sympatico.ca

Reply to
Laurie Osmond
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"Laurie Osmond" wrote

Since when does ABS have a longer warranty period then the normal 3 year/60k klm?

Ian

Reply to
shiden_kai

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