I have a suggestion. You might want to check your vacuum hose, and vacuum switch. My 4WD was inoperable. If you don't use your 4wd enough you can get dry rought on the hose. That may need to be placed, or check your vacuum switch which is located on the driver side in the transfer case. Might need relplaced, or take it off, clean it reteflon it, and tighten in back down. As for the clunking Might want to check it out at a Transmission shop.
Was that the only code that caused you to replace it? Do you have it close enough to sense again.
The fuel pump for the 1990 full size blazer is located inside of the fuel tank. If this model does not have an access plate in the floor of the blazer then the tank will have to be removed to get to the pump.
A 1996 Chevy Blazer Does have a transfer case IF it is equipped with 4 wheel drive
Undo the bolts and take it out. It helps to remove the battery in order to give you some working room as the bottom ones are in a tight spot. We have more info on our enthusiasts forum at www.trailvoy.com
HACKED
my Chevy blazer power seat on my 1996 Chevy blazer isn't working
It sounds like a universal joint to me, it's an easy repair and cheap too.
If the overhead temperature module on a 1998 Chevy Blazer 4x4 stops working and the fuses are good, check to make sure the temperature gauge itself is not damaged. This is located in the front bumper of the vehicle closest to the front passenger tire.
Either the arm on the actuator broke off (common problem) or the actuator itself burned out (which happens over time).
replace the spark plug wires
check ground first
you have an AC leak
one of the lights is not working
Broken cable?
you may have a vacuum leak somewhere.
You could have a starved CV joint. Take your blazer to a wide-open space (i.e., vacant parking lot) roll your windows down and turn the vehicle in tight circles in both directions. If the noise is present have a mechanic check your CV boots/joints.
if the 4x4 isn't working then you need to check your transfer case. is it making any noises? or did it just stop working?