Never had a Silverado but this is what I found in a search:
Q: How do you remove the wiper assembly on a 2003 Chevy Silverado?
In: Chevy Silverado
http://wiki.answers.com/Q/How_do_you_remove_the_wiper_assembly_on_a_2003_Chevy_Silverado
Answer
1) Remove the wiper arms
1. Mark the position of the wiper blade on the windshield with a suitable marker or a piece of masking tape.
2. Disconnect the washer hose.
3. Remove the cover from the nut on the wiper arm.
4. Remove the nut from the wiper arm.
Important: Use a battery terminal puller to remove the wiper arm from the drive shaft.
5. Remove the wiper arm from the drive shaft.
6. Clean the knurls of the drive shaft with a wire brush.
2) Remove the air inlet grille panel.
1. Pull up in order to release the outboard air inlet grille panel clips.
2. Remove the attaching clips running along the edges of the center air inlet grille panel.
3. Remove the sheet metal screws on each end of the air inlet grille panel.
4. Disconnect the windshield washer hose from the nozzle underneath the center air inlet grille panel.
3) Remove the 4 bolts and the reinforcement panel.
4) Disconnect the electrical connector from the wiper motor.
5) Remove the 2 bolts from the wiper transmission assembly
6) Remove the wiper transmission assembly from the vehicle.
7) Remove the drive link from the wiper motor crank arm.
8) Remove the 2 bolts retaining the wiper motor.
9) Remove the wiper motor from the wiper transmission assembly.
Thank you so much, I found that, too and my husband said...well I won’t say! He’s still confused...I’ll bring it to him again.
I knew that besides a couple of snappy remarks (which I LOVE by the way) that someone here would help.
Hey - if we can expose what we do, I’m sure we can figure out where in the h*ll a wiper motor goes!
That sounds like a $75.00 an hour job