Hello all,Very nice post man,Wish i had it a year ago.Well i have two comments on all thats been said here.
(1)I have a 2000 blazer,2door,2 wheel drive,etc;,.88K on it and have done more fixes then any other chevy me or my pops have ever done on 1 chevy in all the chevys he or me have ever owened(and he had`em since the 50`s),anyways:My multi switch went out around 60K(all sudden no wipers,turn sig`s,cruise,etc,)New 1 at dealer was 638.00,couldnt find a used one under 400.00 no where,so bought a whole columme for 100.00 and swapped the switches and resold the colume and bezals for 125.00 on ebay(YAY!)So i highley recomend this post and cleaning procedure becuase no 1 wants this stupid switch gm uses to burn out.For so many things to run on such a small copper plate is a setup for total failure,especialy when you add that grease that melts and runs and bridges it all.
(2)As for the no tach and gauges comment:I lost rear running lights and tach and gauges as well at 65K and two fuses in the underhood box kept blowen,I traced it down to the park nuetral switch on the tranny,I gues when i changed the tranny filter at 50K or just from me running it like hell off road(no idea how)it just wasnt getting a connection,or as the"master mechanic wanna be`s kept telling me,it was bad and replace it",nope not me!Unplugged it,blasted it with air,Hit it a few not hard but light taps with a mallet,Filled it with electrode grease and pluged it back in,Smackked it a few more times,And everything works again and hasnt messed up again yet,even after 20+K miles.
these blazers are possesed in my opion when it comes to there electrical setups.to many things run together.and i`ve found that the least obvious is usualy the problem,anything a so called master tech tells you?Use your commen sense and simplify what you hear and your fix/repair wont cost so much and will be much eaier.
Hope this helps,Thanx all for this site,best on the web!thanx and god bless.