System Diagnosis
NOTE:
Before testing transmission, ensure fluid level is correct and throttle and shift cables are properly adjusted. Ensure engine starts with shift lever in Park and Neutral to ensure proper adjustment of park/neutral position switch. Transmission must first be tested by checking for stored codes. See RETRIEVING TROUBLE CODES below.
NOTE:
For basic hydraulic tests, symptom trouble shooting and vehicle road tests, see the AUTO TRANS OVERHAUL - EEC/MX1
article.