GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 5 of 5
  1. #1

    Question 1987 Sierra Classic Speedometer

    My Sierra Classic has been sitting in the grass for almost two months, and the reason why is because my speedometer is no longer working. First it was off by almost exactly 10 mph, and then after a while, it started to flicker up and down till it finally quit. I was wondering if anyone has had similar problems and if there's any easy fixes/ common causes.

  2. #2

    Question 1987 Sierra Classic Speedometer

    About two months ago my speedometer for my 1987 Sierra Classic started flickering up and down until it finally quit alltogether. I was wondering if this was a common issue and if there was an easy fix.

  3. #3
    Legend
    murdog94's Avatar
    Join Date
    Feb 2008
    Location
    Cloquet, Minnesota, United States
    Posts
    8,198
    Blog Entries
    12

    Default

    ********Threads merged********
    Mike

    Currently

    1997 Chevy S-10 Blazer 4X4 with 330K miles and counting (Hunting rig).

    2009 Saturn Aura XE (wifes car)

    2011 F-150 Crew 4X4

    "Hold it to the floor till you see God.... Then Brake!!!!"

  4. #4
    Legend
    stephan's Avatar
    Join Date
    Sep 2010
    Location
    Far West, Oregon USA,
    Posts
    8,610
    Blog Entries
    1

    Default

    Hey Glen, do you know if this is an electric speedo or a cable driven one? They used both back in those years. If it's cable driven then lubeing the cable & the speedo head usually stops the jumping, but if it's finally stopped at this point then maybe the cable finally broke from the resistance. If it's the electric type then maybe it's the stepper motor for the speedo, if they used them back then. Mike ('99HEARTBEAT) is really good on the stepper motors, so if he doesn't see this thread, & if you determine that it's electric send him a p. message.
    1988 Chevy C-3500 2wd (no pic)
    350 c.i. 5.7 L Stock Block, 4 Bolt Mains
    L-31 Vortec Heads, Edelbrock Cam & Intake,
    Holley 650, Flowtech Headers, Magnaflow exh.
    Jet Trans 700R4, B&M Ratchet, 4:10 gears,
    3" susp. lift kit "shadetree"
    No rev limiter, No speed limiter lol


  5. #5
    Jr. Apprentice jt1200r's Avatar
    Join Date
    May 2011
    Location
    Huntingtown MD
    Posts
    20

    Default

    mine only jumps when its cold
    87 r10 stepside

Similar Threads

  1. 1987 GMC Sierra Classic
    By MD4x4 Fireman in forum Chevy C/K Truck Forum
    Replies: 18
    Last: 04-02-2014, 07:41 AM
  2. Wanted: 1984-1987 GMC Sierra 4x4
    By bellaire35 in forum Chevy Trucks For Sale eBay
    Replies: 0
    Last: 04-18-2011, 05:52 PM
  3. 2003 GMC Sierra speedometer died
    By 20mercury in forum Chevy Silverado Forum (GMC Sierra)
    Replies: 18
    Last: 02-14-2011, 05:36 PM
  4. 1987 GMC Sierra Classic 2wd
    By dwgmc1313 in forum General Chevy & GM Tech Questions
    Replies: 9
    Last: 06-01-2009, 04:17 PM
  5. 1987 GMC Sierra Specifications
    By MD4x4 Fireman in forum Chevy C/K Truck Forum
    Replies: 2
    Last: 06-02-2008, 05:55 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •