GMC Vandura 2500 Questions

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The electric motor for the power antenna works; but, the mast only goes up half way. If necessary, I can convert to a fixed (manual) chrome fm/am antenna if necessary. The antenna’s mount is in the right passenger fender; you an get at it under the hood of the van. The radio was working fine, but, since the mast only goes half way up I only get static right now.
windshield wipers on work once in a while.
Mine is a sterling by debut Edition I need to know what size tires and what type of rims come on that special edition mine have eight tiny holes are those the ones that come with it or are those rims that have been put on by the last owner
I need to replace the master cylinder I called AutoZone to get a price of a master cylinder they asked what type of brakes did I have hydraulic or something else I can't remember what the other kind was so I'm asking what type of brakes are on the van
I can use the switch on the driver side to put down the window but I can't put it down from the driver side to the passenger side it won't go down is that a fuse
I haven’t drove this for about three years
Does a Vandura 2500 have a roller cam?
is there another sensor and where oil pressure gauge needle go all the way up
Several times in the last year, my van started having issues with the VSS. I have changed my battery within this same time. Now I have no speedometer. The break light warning signal stays on. If I go over say 45 mph the check light comes on. When I have none of the problems everything is fine. But, my A/C/blower is not as well. I replaced the VSS and this has not corrected my problem. I did id go thru the local auto parts, but they never heard of it it due the part being obsolete.

I would like to know what the green and grey 12gaw wires go to in the battery area. Located around the battery area. I cant find where those wires may go. If there is some other area that I should be looking into, like behind the dash, I've been behind that as well, for speaker replacement, but that was 5 yrs ago. The dealership doesn't have info on this because it is obsolete to them now.

Checked all the fuses in the wires connected to the lights still no power going to the lights
Sometimes it runs great but sometimes the gouges go crazy it wont shift automatically and the windows don't work and the abs light is on check engine and emergency brake
What seems to make the problem better or worse? After you drive and stop and then try to leave again is when it hsppens most
How long have you had this problem? 1 month
There's no sound at all
How long have you had this problem? Since owning it -2 years
No signals, hazard or brake lights. All fuses and sockets are good but only 1 side running light works. All bulbs are good.
How long have you had this problem? since replacing steering column

How long have you had this problem? since replacing steering column
We just got the van and need the air to work.
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