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Detent Switch - What Years?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 1986Blazer, Oct 24, 2001.

  1. 1986Blazer

    1986Blazer 1/2 ton status

    Jun 13, 2001
    Likes Received:
    Key West, FL - Southernmost Point
    I am trying to find solutions to fix my 700R4 that is slipping between shifts. Looking at my four different GM manuals I found a DETENT SWITCH that is attached to the gas pedal. These manuals do not say what years have this - does anyone know if an 86 K5 has this and what does it do?

    Has anyone had this go bad?
    Will this switch cause problems with slipping if broken - any help would be great!

    <a target="_blank" href=http://www.geocities.com/keywestk5/KeyWestK5.html>http://www.geocities.com/keywestk5/KeyWestK5.html</a>
    So I says to him, I said, "get your own monkey."
    1986 K5, 350 GM Crate, 700R4, NP208
  2. shaggyk5

    shaggyk5 1/2 ton status

    Feb 17, 2000
    Likes Received:
    SE pennsylvania
    im pretty sure that is the thing that goes to your trans that causes it to downshift at speed. like if your cruising in 4th and need to pass someone, you press the gas and the trans shifts to third. You should have this. (if im thinking of the right thing.

    <font color=blue>86, 350 crate, 33's.</font color=blue>
    <font color=red>Lop Sop Doi Off-Roader</font color=red>
  3. HarryH3

    HarryH3 1 ton status Author

    May 31, 2000
    Likes Received:
    Georgetown, TX
    The detent switch was used only for the Turbo 400. It uses an electrical switch to tell it when to shift into passing gear mode. The line pressure in your 700R4 is controlled by the Throttle Valve cable. There's a guide to adjusting it properly at <a target="_blank" href=http://www.700r4.com>www.700r4.com</a>

    <font color=black>HarryH3 - '75 K5</font color=black>
    <a target="_blank" href=http://www.angelfire.com/super/ThunderTruck>www.angelfire.com/super/ThunderTruck</a>
    It's a great day to be alive...
  4. dyeager535

    dyeager535 1 ton status Premium Member

    Dec 13, 2000
    Likes Received:
    Roy WA
    You'll have a brake switch only with the 700, which unlocks the torque converter when you step on the brake. "Detent switch" is TH400 only, detent cable would be TH350.

    My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>www.dorianyeager.com/index2.html</a>
    Why insist on counting when the ring gear has the tooth counts stamped in?
  5. bee32

    bee32 1/2 ton status

    Aug 6, 2001
    Likes Received:
    Virginia Beach Va.
    Here is an easy way to adjust the TCV cable right out of the GM Tranny manual. Release the locking tab( near the carb or throttle body) and push the adjusting rod (you'll see the teeth on it) allthe in towards the fire wall. Now the book says to use the throttle body or carb linkage but I had to use the gas peddle (a hint I got from my best freind who ase cert) either pull throttle all the way out or push the peddle to the floor(which is what I did) and wala it is adjusted. Pretty easy and I have the manual at home if you have any more questions this all from memory when I did a tranny change a few months ago. I haven't had a problem sense.

    83 K-5 4" on 35's<P ID="edit"><FONT class="small">Edited by bee32 on 10/25/01 05:41 AM.</FONT></P>

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