ABS Light Due to Poor Electrical Ground Under the Battery Tray on Chevrolet Silverado 2500 HD

A poor electrical ground under the battery tray may cause the ABS warning light to illuminate. Our technicians tell us that cleaning and properly securing this ground and also the main ABS ground on the frame rail below the drivers door may be necessary.

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Average mileage: 123,200 (50,000–226,000)
8 model years affected: 2001, 2002, 2003, 2004, more2005, 2006, 2007, 2009
19 people reported this problem
10 people shared problem details
Same problem. But can't find ground under battery tray. 6.6l duramax 72k miles.
ABS and BRAKE light on, brake light is on and off sometimes but if you clear the codes they stay off till highway speeds then back on again. Still not fixed re did ground under driver side battery tray is next
abs light flickers off and on
ABS light on.. no apparent issues. sensors are good, all brakes and rotors brand new.
AB'S light on continously. Cleaned ground on frame below drivers door, not a cure. Tomorrow check battery ground, diesel with two batteries.
ABS light flickers on and off. Was told that speed sensor was bad, so replaced it and still have the same problem. not yet fixed
Replaced new front wheel hubs. Cant get a code because cig lighter don't work. Still have abs light on
antilock brake systen light came on It is not fixed
Abs light stay illiminated and service brake system message is intermittant
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