Question about 1993 GMC Suburban

2 Answers

Key is on....battery is good....engine won't turn over

I have a 1993 suburban. yesterday i backed it in the driveway and parked it. this morning...the ignition key turns to "on" radio works...lights are good and bright...but when I turn over the will not turn over the engine...I don't even have that audible "click" that you get when you have a dead spot in the starter....

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  • 8 more comments 
  • G Doyle May 18, 2009

    I tried the shifter in both park and neutral....held the key on and "wiggled" the shifter back and forth....still nothing

    The battery connection is, heater, all my instruments etc are all reading lights are nice and bright...not dim like you would with a bad battery....

    Tried boosting never know...still same result...

    Checked the ignition fuse....fuse is good

    Tried tapping the starter lightly with a I said...the solenoid isn't even engaging....

  • G Doyle May 18, 2009

    ok...what does the power distribution box look is
    where I fall down...I can handle the basics....and I have several good
    buddies that are is the Victoria day
    holiday...and it is only 0730...none of them will be at home...or even
    out of bed yet....

    I really appreciate this help guys....

  • G Doyle May 18, 2009

    Black plastic box attached to firewall in front of passenger side glovebox....approx 12" long....shaped like a "t"...has writing on top.....fuel pump relay...junction block...optional relay etc?
    fastened onto 3 "studs protruding from firewall and held on with plastic "nuts" that do not require tools to remove?

    Inside there I checked 2 fuses...both are good....

    and no anti theft unit.....

  • G Doyle May 18, 2009

    I'm confused here.....I left a rating for the guys helping me...and FIXYA has my problem listed as "solved" .....unfortunately...not yet....

    can anyone tell me where the start relay is on the '93 GMC Suburban?


  • G Doyle May 18, 2009

    "You checked under hood in relay/fuse box?"

    yes...there appears to be a relay for the fuel pump and there is a
    terminal bar with about 5 connections on it...there is also 2 fuses in
    separate fuse holders...1 blade...i "tube" type....both are ok....

    I also have a fuse "Panel" under the steering column.....should i be looking in there?

  • G Doyle May 18, 2009

    Motor 1258
    going to have to get back to you is a national holiday and there is nothing open for me to get parts....I have found 4 or 5 different relays that match your description...both under the dash and there is one under the black plastic box that you mentioned ...but I have no way of testing them until tomorrow

    Thanks for all your help....going out to dust off my old bicycle so i can get to work tomorrow...I'll let you know what it is if I get it fixed

    Thanks again

  • G Doyle May 18, 2009

    FIXED!! (well...kinda till tomorrow)

    First off i want to thank everyone for their was a pretty frustrating day to say the least....amazing how much we rely on our vehicles isn't it

    Well....just wanted to point out that my vehicle doesn't have a start has a solenoid attached directly to the was explained how the solenoid works with the starter...but i am sure you guys know that already

    On the solenoid there is a thisk red wire and a smaller wire...the smaller wire is attached to a "post" sticking out of the solenoid....welll...I couldn't get my fat melon up in there to see...but I could feel that the post was i turned a few things sideways and stuck a cedar shim in there and the engine turned will do till i get to work tomorrow and we can put it on the hoist at lunchtime and pull the starter

    Thanks again guys

    Apprecate it


    P.S. if you ever need to know anything about carpentry...let me know!!

  • Mike Butler
    Mike Butler May 11, 2010

    Check all the fuses in there while your at it.

  • Mike Butler
    Mike Butler May 11, 2010

    Have to find start relay, Probably under hood in power distribution box and switch it with one same if there is one & see what happens.

  • Mike Butler
    Mike Butler May 11, 2010

    Try moving shifter through all gears while holding key to start.



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Black box (plastic) usually pretty handy to battery, you should see red (usually) cable from battery running to it. Another thing that came to mind, you don't have anti-theft system on that do you? Sometimes they will cause problems after a dead battery. Try using your key & valet key to unlock the doors, manually especially drivers.

Posted on May 18, 2009

  • 2 more comments 
  • Mike Butler
    Mike Butler May 18, 2009

    You checked under hood in relay/fuse box?

  • Mike Butler
    Mike Butler May 18, 2009

    Yes, wouldn't hurt. Relay should be a little 1" approx. square plug in type usually.

  • Mike Butler
    Mike Butler May 18, 2009

    Ok good luck on that bike thing, enjoy what's left of the holiday.

  • Mike Butler
    Mike Butler May 19, 2009

    OOOPS! I have to apologize, when you said you tapped the starter, and solenoid never clicked, Like a dummy I assumed you did check for loose wires etc too, which I shouldn't have. You never know how much to push it when asking if they did this & did that, because some people think your calling them dumb by asking those questions, and have got really mad that I did. Sorry about that, could have saved you all that aggravation, but hey, you know your vehicle much better right? (ha-ha.) Glad you got it, but what about all that exercise you'll be missing now? (ha-ha). Worst part of it is, after all these years of doing mechanical work, if I learned nothing else, assuming anything is a Big NO-NO ! Again, sorry, but glad your up & running.


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  • 186 Answers

Check your battery connections really good,make sure they are clean.If that checks out o.k. have the battery tested or try to jump start it. If it takes a jump the battery is bad.If that all checks out pull it out of park & put it back in park.You could have a nuetral safety switch mis adjusted or going bad.hope this helps

Posted on May 18, 2009


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