I believe this AC compressor is the same as my '95 Astro. The clutch is pressed on to the compressor shaft. You should see a threaded hole in the center of the clutch and a threaded screw in the center of that hole. To get this off you have to have the proper puller. It threads into the clutch and has a screw that you tighten against the end of the screw in the clutch. This pulls the clutch off the compressor (maybe, if it isn't frozen to the shaft). FYI, I just replaced my AC compressor and found that a new compressor with a new clutch was only about $40 more than the clutch alone. The puller cost $30.) Of course, if you replace the compressor you have the work of some parts in the AC system and recharging it. There are some good web sites with good pictures and instructions you may want to look into before you decide. I found that when I replaced the compressor, I had to replace the accumulator and compressor oil and there is some question about flushing the AC system when you install a new compressor. Hope all this helpful. Good luck.
Is there a bolt or a screw that I have to remove first before I use the puller, to get the old cluch out?
The compressors that If have seen have a threaded shaft. No nut or socket to unscrew. Some models may have a nut to remove, mine does not. The puller pushes against the end of the screw as I understand it. I don't have a puller but looked into purchasing one before I decided to go with the new compressor. If you use the puller, be sure you clean all the threads in the pulley that the puller screws into, so you can screw the puller all the way into the pulley. I would put some penetrating oil in these threads and on the end of the shaft.
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Go to auto zone rent the puller for the ac pulley take the belt off use the puller to take the pulley off then you can also replace the magnet for the clutch you might as well you have it off nothing like replacing the clutch and 6 months down the road that goes so its up to you good luck
SOURCE: How to remove a 2003 GMC Sierra 1500 water pump
first what you want to do is locate the water pump. then release then tension off the belt that it is connected to. there should be 2 or 3 bolts and undo them and pull it out. then replace with the new one.
SOURCE: i don't know how to
this sould only be done by a professinal there are sepical tools used to bleed system
SOURCE: removal of power steering pump on 1998 GMC Sierra 1500
you need a power steering pump puller the rest is simple any trouble let me know
SOURCE: oil pan removal on 2002 gmc sierra
did you pull the rubber plugs between the motor and trans out? there are either nuts or bolts up there
SOURCE: Passlock Security information for GMC Sierra 1500"
you can bypass the system. There is a great write-up here: http://newrockies.ca .
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