possibly you have a leaking cooling line from your trans cooler or radiator
There are several things that can cause shifting problems in your 1989 Chevrolet Blazer transmission. The most common cause of shifting problems is a lack of transmission fluid. Broken shifting forks can also cause transmission shifting problems.
Could be several reasons, need to know aprox where it is leaking from.
Blazer does not take off like it should. sluggih slow take off then after it gets going it does wee.
Possibly a vacuum problem or transmission solenoid. This will have to be properly diagnosed in order to definitively determine the cause.
Hey Carol===Evidentally something was not put together right. GoodluckJoe
worn out trans most likely clutchs or oneway clutch <sprag>
Possibly your speed sensor. My speedometer would bounce around & then soon after it felt like my transmission was slipping. Turns out the speed sensor controls the upshift in your transmission.
If this is an automatic transmission, more than likely the transmission is on it's way to the junkyard. Usually failing transmissions lose reverse first, then the higher forward gears - last will be the lowest forward gears.
A howl in an automatic transmission between speeds of 60 kph and 80 kph could signal a problem with the fan belt. Another cause could be an issue with the torque converter.
No, it will just reduce your fuel economy.
If only the HIGH SPEED is giving trouble but not the other speeds, check the HIGH SPEED relay mounted on the firewall facing the engine on the passenger side, they burn out easily If all speeds are giving trouble could be the power source or the blower motor
there is a tsb in alldata for this loss of voltage to transmission solenoid power supply circuit cause may be after market remote starter