Overdrive light keeps blinking and sometimes won't shift

O/D light blinking won't shift into 3rd or 4th error codes are P1624,P0733,P0734. could this be solenoids? can i replace it at home?

The 1st thing u need to do is have the transmission control computer tested for codes, when the light blinks there is a fault code stored, but based on the symptom you have a failed electric shift solenoid inside the transmission.

My car's battery kept going dead so I purchased a new battery, the problem still exists.It intermittently goes dead. Sometimes every few days sometimes longer. I make sure everything is turned off when I park the car,the battery tests 602 when tested, the required # is 598. Sometimes it tries to turn over, sometimes it clicks other times it does absolutely nothing.