How do you replace the cv joints on a 1998 blazer s10?
On the 89 I have, you pull the brake, rotor, shock and use a gear puller to disconnect the steering knuckle. Then you use an impact gun to loosen the nut that holds the CV spline into the wheel hub. remove the flange bolts that hold the inside of the CV to the differential. Turn the steering wheel towards the side youre not replacing to get more room under there and the CV should pop out easy.
This can be done, though some modifications may be needed. If you need to replace your core support (rad support) as well, order a core support for a 91 S10 blazer. This will help do away with the mounting issues. I did this to a 1985 S10 blazer and the grill fit fine with the factory core support, but not all of the mounting locations matched.
Put your truck up on jacks. Loosen the lug nuts on the wheel and then remove them. Remove the tire so you have access to the ball joints. Use a pair of pliers to remove the cotter pins. Place a ball joint separator between the ball joint and the steering knuckle and then hammer it until it pops loose. Remove the old ball joints and then replace them with the new ones.