Having problems with your 2005 Chevrolet Tahoe ?
Why does the ABS system keep activating in my 2005 tahoe for no reason mostly on take off?
Most likely you have a wheel speed sensor problem and one sensor is dropping out causing traction control to kick in. this works off of abs system. if your abs motor is just running all the time the ebcm has internal failure and would need replacing. there is a ground wire on left side of frame would be rt under drivers side body mount behind front tire. try cleaning this area by removing bolt and scuffing frame if it gets corroded abs will do some funny things. worth a shot wont cost you anything.
Repair Help & Product Troubleshooting for 2005 Chevrolet Tahoe
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