I'm having some trouble getting the timing set replaced on my '94 motor. I will be picking up a 2 or 3 claw puller for the crank sprocket tomorrow. However, I can't find any good info on how to pull the water pump drive to replace the seal. My Helm's manual indicates a GM tool to use but has no diagram of it or how to use it, so I don't have any idea what type of alternative tool I could use to remove the drive. Any info or pics would be great. Thanks.

 

I don't think You remove the drive to replace the seal. The drive comes through the timing cover so replace that seal also.