1998 Buick Park Avenue Mode Door Actuator

Discussion in 'Interiors/trim/dashes etc.' started by Indycars, Oct 18, 2018.


How many have a 1/4 inch Swivel Joint ???

  1. Yes

    5 vote(s)
  2. No

    0 vote(s)
  1. Indycars

    Indycars Administrator Staff Member

    This actuator is located on the the driver side and next to the center of the dash, up and right
    of the accelerator pedal. I had to remove 4 screws to get the sound panel out so that I could
    see the two actuator on the driver side, there are 4 actuators in total. They do change
    depending on the side of the vehicle, so make sure you order for the correct position.

    I have the Factory Manuals, but they were of only little help and never showed me how to
    actually remove actuators. I've been on my head up-side-down with my feet over the
    head-rest for 3-4 hours now and finally got the actuator out. For some reason it did not
    want to come off the shaft and then it pretty much fell out, not sure what the reason was.

    You will need a 7/32 inch socket to remove the actuator screws in three places. You will
    also need a 1/4 inch drive socket set to be small enough to get into those tight places.
    Swivel joint will be a plus.

    Swivel Joint

    Last edited: Oct 21, 2018
  2. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    Late model daily driver repairs.
    Usually get 1 hour to change most HVAC Actuators out in a shop..
    Some you have to pull the entire dash out and at times remove the entire HVAC box assembly from the car.
    Get 6-8 hours to do that in a shop as a Mechanic today.
  3. Indycars

    Indycars Administrator Staff Member

    I see lots and lots of comments on the Internet, they must fail all the time. I had one replaced by
    a local shop about a year ago and it cost $500.
  4. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    All the time Yes.
    My Old 87 Corvette has what's called the C68 HVAC option.
    Has digital display temp contol.
    1 Electric actuator.
    Rest are old style vacuum belows.

    1994 Suburban with blown 4L60e yet the Electric actuators work yet.
    1999 Tahoe they work fine...Glad.
    Wife's old 1999 Actuators work fine...Very Glad Happy !
  5. Indycars

    Indycars Administrator Staff Member

    I bought a Dorman actuator hoping it might be the right part, but no it's not right. I cannot find
    the part anywhere, I've looked at all the GM parts houses, Dorman, AC-Delco and the major local
    parts franchises. They all have the blend door or the inlet door actuator. I'm not about to pay for
    a dealer item only!!!

    I was looking on Ebay for a used one and didn't see any, but I came across the gear that I need. It
    was available in plastic $20 or in metal for $25 with shipping. I've repaired plastic gears before and
    was prepared to go that route again until I found the gear that I need.

    I bought the Dorman 604-111 in hopes that it would work, it did not.

    This is the metal gear I bought.

  6. Maniacmechanic1

    Maniacmechanic1 solid fixture here in the forum

    Never seen that nice Aftermarket Bull gear available but never looked.

    Some Mom and Pops parts stores are left local.
    A.C. Delco dealers yet.
    Get better deals.
    Not all have websites.

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