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Q: ABS sensor on front hub

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What is the size of the pentagon hex bolt holding on speed sensor to hub?
My car has an automatic transmission.

Hi, thanks for writing in. The hex bolt size for the ABS sensor on a 2006 GMC Envoy is a 5 millimeter for the front. I believe the rear sensors are placed into the axle rather than the hub and use a torx bolt instead of allen. Hope this helps and best of luck!

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