How do i change my alternator?

i have a 99 silverado and i can't take the alternator off... i undid the two screws in the front but it won't even budge. is there one in the back that i don't see? any tips? any tips for when i put the new one on?
How do i change my alternator?
REMOVAL PROCEDURE



CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.







Disconnect the battery negative cable.

Disconnect the terminal plug from the back of the generator.

Disconnect the battery lead from the back of the generator.

Remove the upper fan shroud as needed.

Remove the drive belt.

Remove the generator mounting bolts holding the generator to the brace and the bracket.

Remove the generator.

INSTALLATION PROCEDURE







Install the generator. NOTE: Refer to Fastener Notice in Cautions and Notices.

Perform the following procedure in order to install the generator mounting bolts holding the generator to the bracket and the brace(two on front,one on back)

2.1. Loosely install the generator mounting bolts holding the generator to the bracket and the brace.

2.2. Install the brace attachment.

2.3. Tighten the generator mounting bolts holding the generator to the bracket and the brace.



Tighten

Tighten the generator mounting bolts holding the generator to the bracket and the brace to 50 N.m (37 lb ft) .







Install the drive belt to the generator.

Install the upper fan shroud as needed.

Connect the battery lead to the back of the generator. Tighten Tighten the battery terminal nut to 8 N.m (71 lb in) .

Connect the terminal plug to the back of the generator.

Connect the battery negative cable.
How do i change my alternator?
there should be %26quot;bolts%26quot; holding it on to a bracket, no %26quot;screws%26quot;
The other poster has given great instructions. But he didn't mention that your belt has tensioner on it that needs to be release to release the belt.
LOOK AT THE NEW ONE IT WILL SHOW YOU IF THERE OR ANY MORE BOLTS