Why is my E-AT light blinks when I first start 93 Nissan truck?

The blinking E-AT light on your 1993 Nissan truck typically indicates a problem with the automatic transmission system. It could be caused by issues such as low Transmission Fluid, a malfunctioning sensor, or a problem with the transmission itself. It's advisable to check the transmission fluid level and condition first. If the light continues to blink, consider having the vehicle diagnosed by a professional mechanic to identify and resolve any underlying issues.