When not used, they do get stuck and hard to shift. I had this with my 93. I put it in neutral and forced it into 4 wheel low. After it went, it is now easier to shift into.
transmission wont shift from low to high very good
Align the shift indicator orreplace it. Your problem is strictly column mechanical.
check the 4 whell high actuator
The blazer could have trouble with the shift switch. The shift solenoid could be defective as well. Check both of these for problems.
1998 chevy blazer wont start good spark and good fuel presure
97 Chevy Z71 truck will not shift into third gear.
try a blower motor resistor
Because it hates you!
Set fire to it!
The shift lever cable may be damaged or out of adjustment.
Speed sensor on Trans, or buffer behind dash... OR, any broken wires in this circuit. Very common problem on this and many other vehicles.
did you check your battery and alternator?