Hello and welcome to justanswer.com
You need to see what codes for the engine and trans were stored. This is very easy to do. Here's the procedure to do both. Once you have the codes you will know if your problem is worth fixing.
Hopefully this answers your question and you accept. Positive feedback is appreciated and please let me know if I can assist you with anything else.
When the Transmission Control Module (TCM) senses an abnormality in the input or output systems, the D4 Indicator Light in the Gauge Assembly will blink.
When the Service Check Connector (located behind the Center Console) is connected with a Special Tool, the D4 Indicator Light will blink the Diagnostic Trouble Code (DTC) when the Ignition Switch is turned "ON".When the D4 Indicator Light has been reported on, connect the Service Check Connector with the Special Tool. Then turn on the Ignition Switch and observe the D4 Indicator Light.Codes 1 through 9 are indicated by individual short blinks, codes 10 through 15 are indicated by a series of long and short blinks. One long blink equals 10 short blinks. Add the long and short blinks together to determine the code. After determining the code, refer to the Diagnosis by Symptoms .Some Programed Fuel Injection (PGM-FI) problems will also make the D4 Indicator Light come on. After repairing the PGM-FI system, disconnect the BACK UP fuse (7.5 A) in the Under-Hood Fuse/Relay Box for more than 10 seconds to reset the TCM memory, then recheck.NOTE: Disconnecting the BACK UP fuse also cancels the Radio Anti-theft code, preset stations and the Clock setting. Get the customer's code number and make note of the radio presets before removing the fuse so you can reset them.