Automatic transmission fluid.Automatic transmission fluid.
Check the fluid.
Automatic transmission fluid
dextron auto transmission fluid or power steering fluid
A 2000 Jeep Grand Cherokee uses ATF+4.
The code p1762 in a Grand Cherokee shows possible transmission problems. Low transmission fluid could be the cause. Make sure that the fluid is full then check again.
Same place you check the fluid level.
Down the dipstick tube.