Nothing, ever.
This is a reliable truck that's never given me any problems. I have not had any of the problems everyone else seems to have. I have 95,000 miles, and it runs like new. Only thing is the driver's door does make noise. Annoying, yes. And gas mileage? I get 24.5 to 25 Miles Per Gallon Highway! Shurly this isn't what people consider bad for a 4,000 pound 4X4 truck? I get about 16.5 to 17 MPG city, also not bad. Never done any repairs just regular maintenance. I do have the fuel gauge that can't make it's mind up temporarily when put in reverse, but it works fine other than that. By the way guys, the cd player says "ERR" when you try to play a CD-RW. Try a CD-R! My Blazer just loves me I guess :)
I also have this blazer the squeaking in you door is the bushings are bad and eventually the door will not work both of mine have. fix now or the damage is costly. also the gas gauge thing in the fuel pump going out mine did it and it to can be costly. I love my truck, but it is a pain in the butt sometimes.
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