2003 sonoma, what size are the stater bolts - 2003 GMC Sonoma

Speed sensor on a 2003 gm sonoma 4.3L auto trans.

mount bolts should be 13mm

3/8 inch allen.

Usually 1/2"

My best suggestion....SALVAGE YARD.

You'll need to move the brake caliper out of the way, and take off the rotor, seperate the ball joints from the steering knuckle, usually a pickle fork works well. If the ball joints have rivots holding them on, you'll need to grind them away, and knock them out, the new ball joints will have new bolts. Bolt in the new ones and reinstall everything. I would have the alignment checked afterwards.

alternator bolts can be 13 mm 14 mm 15mm.your best bet is to go to dealership.they can look up the bolt and size you need.

Change mechanics,It is only 2 bolt that hold it on and once the bolts are removed you just turn it side ways to pull it out.

the dash speakers are 4x6 and the 6 1/2 in the doors