The carburator choke on the "Green Meanie" ('85, 350 5.7-L) does not work: it remains closed when engine is warm. I checked the wire going to the electric choke unit for voltage, and after cleaning the electrical contacts, it does have 12 volts. I was told by a "mechanic friend" (these two words seem to be contradictory, lately...) that this electric choke needs to be replaced. He told me that it is a "dealer-only" part and is $85.50, and the labor would be $45.00. Since I have just done the u-joints and the brakes, I'm feeling pretty good about working on her, so my questions are: (1) What other tests can I do to confirm that this electric choke is the problem ? (2) Are there other sources for this part than the GM dealer ? (3) What other bits 'o info do I need in order to proceed ? I have read the Haynes manual, and am now thoroughly confused about this electric choke, and am looking forward to hear from you all ! Thanks, in advance !