Alrighty. I am new here so I am seeking out some advice from the pros.
I currently have a 98 4dr, 4.3 Vortech, 4x4, auto tranny with 212,000 on it! I am getting around 16mpg and I want to keep er goin. My question is, where should I start?
I bought it with 129k on it, and havent really done anything to it other than hub bearings, breaks, and a fuel pump(dont want to relive that night). I want to change fluids and do general stuff, but am working on a limited budget.
Dont get me wrong, she has her problems. I have this wierd clicking sound that comes from the area right under the drivers door when I am driving. Hs done it since the day I got it. Any ideas. I was think u-joint for the t-case?
Also, I am getting ALOT of blow out fluid from the tranny dipstick..out of that little foam gasket thingy...???
It had computer problems, which I fixed, but my DRLs dont work..nto a big deal tho.
My main concern is keeping this running as long as I can. As far as I know, plugs are original, so are the wires and cap and rotor. I am going to flush coolant. Was going to change both front and rear difs, tranny filter and fluid change, and plugs, wires, cap and rotor..but I am not looking forward to the plugs!!!

 

At 93,000km I don't see my truck making 212,000km's let alone miles!

Doesn't sound like you've got a lot to worry about!

 

If the plugs etc have that many miles on them, change them manufactor says every 100,000 miles. I change mind at 50,000 miles, but then again I'm old fashion. At 212,000 miles your plugs ought to be nubs by now, its a wonder then even start your truck that goes along with the Cap, Rotor and plug wires.

 

mine make the same noise mine was the torsion bar dogbones that bolt to the crosmember they are a little pricey at 70.00 a side. good luck let me know what you find.

 

You have the right idea... do a complete tune up (don't forget the fuel and air filters) and change all the fluids. I would change the tranny filter and fluid and then do a full fluid flush soon after. Although a little pricey, I have changed my blazer over to all synthetics.
With your kind of mileage I would place the tranny in gear with the parking brake on and crawl underneath. Grab the drive shafts and try moving them all around in order to check the u-joints.