ABS Light Due to Poor Electrical Ground Under the Battery Tray on GMC Yukon XL 1500

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: 157,134 (80,000–250,000)
7 model years affected: 2000, 2001, 2002, 2003, more2004, 2005, 2006
18 people reported this problem
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problem details
2001 GMC Yukon XL 1500 80,000 mi,
ABS PARK BRAKE LIGHTS ON ALL THE TIME
2005 GMC Yukon XL 1500 197,000 mi,
The ABS light and BEEPER comes every time the Yukon is started. Beeps loudly 15 times. How can we repair this?
2004 GMC Yukon XL 1500 128,000 mi,
grounds under driver door. bad location for a ground.
2002 GMC Yukon XL 1500 100,000 mi,
Haven't fixed it yet. But going to give it a try.
2000 GMC Yukon XL 1500 250,000 mi,
light comes and goes. Mostly stays on...