No start, no click, no nothing

Discussion in 'Tech Discussion' started by Gray87GMC, Nov 18, 2017.

  1. 1987 GMC Jimmy

    1987 GMC Jimmy Full Access Member

    Age:
    20
    Posts:
    2,653
    Likes Received:
    261
    Joined:
    Jan 23, 2016
    Location:
    Wesson, MS & NOLA
    First Name:
    Jesse
    Truck Year:
    1987
    Truck Model:
    V1500 Jimmy
    Engine Size:
    350
    upload_2017-11-19_23-23-12.png

    Here's the troubleshooting chart right out of the light duty truck service manual for '87. I found '86 first, and it was the exact same thing. I'm puzzled on what the "neutral sense switch" does on a column with mechanical lockout, which I did confirm that some got that and some didn't, as previously postulated, but here's something. Someone mentioned earlier that it was time to get friendly with the multimeter. I want to reiterate that thought. I'm curious. When you turn the key to the RUN position, what happens? No, orange SES light or red BELTS light if the chime/buzzer module is still down there and working (most of those modules are long dead or thrown in the trash)? No fuel pump cycle? You had this exact problem, replaced the ignition switch, and still had the same exact problem? If replacing the switch had caused it, I'd suggest looking back at the actuator rod, but it doesn't sound like that's what happened. Jerry's gonna know more about this ignition stuff than me, but I hope this gives you some homework, and you find the issue. I would really pay close attention to that bulkhead connector. That's where I'd start.
     
  2. HotRodPC

    HotRodPC Administrator Staff Member

    Posts:
    40,220
    Likes Received:
    758
    Joined:
    Aug 29, 2010
    Location:
    OKC, OK
    First Name:
    HotRod
    Truck Year:
    85
    Truck Model:
    Silverado K10 to K20 Conversion
    Engine Size:
    6.2 to Gas???
    That's a pretty nice Troubleshooting Flow Chart. Thanks for the input Jesse.
     
  3. 1987 GMC Jimmy

    1987 GMC Jimmy Full Access Member

    Age:
    20
    Posts:
    2,653
    Likes Received:
    261
    Joined:
    Jan 23, 2016
    Location:
    Wesson, MS & NOLA
    First Name:
    Jesse
    Truck Year:
    1987
    Truck Model:
    V1500 Jimmy
    Engine Size:
    350
    Thanks and no problem!
     
  4. Honky Kong jr

    Honky Kong jr Super Sarcastic Man

    Age:
    45
    Posts:
    7,790
    Likes Received:
    2,829
    Joined:
    Jun 14, 2016
    Location:
    Denver,PA
    First Name:
    J-me
    Truck Year:
    87
    Truck Model:
    V10
    Engine Size:
    Lil BB 407
    :waytogo: Way to go Jesse
     
    henrym and 1987 GMC Jimmy like this.
  5. Gray87GMC

    Gray87GMC Full Access Member

    Posts:
    54
    Likes Received:
    13
    Joined:
    Oct 25, 2017
    Location:
    Kansas
    First Name:
    Austin
    Truck Year:
    1987
    Truck Model:
    C10
    Engine Size:
    5.7
    When I put the key in the ignition, the alert chimes. However, when I turn the key nothing happens. Perviously the dash lights would come on and I would be able to turn on the wipers when the key was in the “on” position but engine not started. Now nothing. The horn still works, headlights and dome lights still work. I really hoped the ignition switch would do it but no go.

    Thank you for the flow chart, at least I know what to try now!
     
  6. Gray87GMC

    Gray87GMC Full Access Member

    Posts:
    54
    Likes Received:
    13
    Joined:
    Oct 25, 2017
    Location:
    Kansas
    First Name:
    Austin
    Truck Year:
    1987
    Truck Model:
    C10
    Engine Size:
    5.7
    Looks like I need to check the bulkhead connector, fusible link, and engine control switch. As soon as I figure out what those are I’ll give it a shot!
     
  7. MrMarty51

    MrMarty51 Full Access Member

    Age:
    66
    Posts:
    3,021
    Likes Received:
    266
    Joined:
    Oct 25, 2012
    Location:
    Eastern Montana
    First Name:
    Martin
    Truck Year:
    1978
    Truck Model:
    K20
    Engine Size:
    400
    There will be two fusible links. I dont remember now what their locations are.
    probably one down by the starter and another off the alternator, be sure that they are not burned out.
    With this year/model of truck, there may be more than two, like with the 88 year trucks, if so, check all of those too.
     
  8. foamypirate

    foamypirate Full Access Member

    Age:
    28
    Posts:
    3,201
    Likes Received:
    186
    Joined:
    Jul 30, 2010
    Location:
    Pflugerville, TX
    First Name:
    Jake (Mr. Wilson)
    Truck Year:
    1988
    Truck Model:
    R20
    Engine Size:
    6.0L LQ9 - 4L80E (NV4500 swap in progress!)
    Based on the wire colors in the chart (purple for auto, yellow for manual), it sounds like the "engine control switch" is just an obscure name for the ignition switch.

    Also sounds like it's at least worth checking if your truck does have the starter wiring going through the NSS, just in case. I'd hate to have it be that simple and overlook it. Sometimes GMs rhyme and reason for things can be weird, so even though my 87' and 88' squares didn't run through it, it's worth looking at.
     
  9. Honky Kong jr

    Honky Kong jr Super Sarcastic Man

    Age:
    45
    Posts:
    7,790
    Likes Received:
    2,829
    Joined:
    Jun 14, 2016
    Location:
    Denver,PA
    First Name:
    J-me
    Truck Year:
    87
    Truck Model:
    V10
    Engine Size:
    Lil BB 407
    So maybe I wasn’t totally 100% wrong??? That would be kinda cool I guess see but if I was I can handle it the cuts will just be a little deeper lol jk
     
    foamypirate likes this.
  10. foamypirate

    foamypirate Full Access Member

    Age:
    28
    Posts:
    3,201
    Likes Received:
    186
    Joined:
    Jul 30, 2010
    Location:
    Pflugerville, TX
    First Name:
    Jake (Mr. Wilson)
    Truck Year:
    1988
    Truck Model:
    R20
    Engine Size:
    6.0L LQ9 - 4L80E (NV4500 swap in progress!)
    Here is a wiring diagram I colorized for the starting/power distribution circuit. Technically for an 88' R/V truck, but 87' should be the same. It only shows a NSS for the manual trans trucks. Gotta love GM's inconsistency. Troubleshooting diagram mentions one, wiring diagram doesn't, we seem to have an 87' with, and another 87' and 88' without. WTF GM?


    start_circuit.jpg
     
  11. Gray87GMC

    Gray87GMC Full Access Member

    Posts:
    54
    Likes Received:
    13
    Joined:
    Oct 25, 2017
    Location:
    Kansas
    First Name:
    Austin
    Truck Year:
    1987
    Truck Model:
    C10
    Engine Size:
    5.7
    Thank you! Looks like two fusible links between the fuse and the junction block. Should be easy enough to hit those with a test light tonight!
     
  12. smoothandlow84

    smoothandlow84 Be patient with driver...this truck is bagged

    Posts:
    1,443
    Likes Received:
    238
    Joined:
    Jan 4, 2015
    Location:
    Arizona
    First Name:
    Steve
    Truck Year:
    1984 Frame...87 motor and 700r trans
    Truck Model:
    1500 r10 pavement scraper
    Engine Size:
    350 TBI
    The switch

    1511225805443.jpg
     
  13. Gray87GMC

    Gray87GMC Full Access Member

    Posts:
    54
    Likes Received:
    13
    Joined:
    Oct 25, 2017
    Location:
    Kansas
    First Name:
    Austin
    Truck Year:
    1987
    Truck Model:
    C10
    Engine Size:
    5.7
    Alright guys... I’ve had a development I could really use some input on.

    All of gene problems started with our first cold snap. Today we went from 20 to 65 degrees... and the truck started right up with no problem. Dash lights work... turn signals work... everything works!

    It’s going to get cold again soon, what in he world could do this?!?
     
  14. Honky Kong jr

    Honky Kong jr Super Sarcastic Man

    Age:
    45
    Posts:
    7,790
    Likes Received:
    2,829
    Joined:
    Jun 14, 2016
    Location:
    Denver,PA
    First Name:
    J-me
    Truck Year:
    87
    Truck Model:
    V10
    Engine Size:
    Lil BB 407
    Bad connection some where. Move somewhere warmer lol
     
    78c10bigten likes this.
  15. Gray87GMC

    Gray87GMC Full Access Member

    Posts:
    54
    Likes Received:
    13
    Joined:
    Oct 25, 2017
    Location:
    Kansas
    First Name:
    Austin
    Truck Year:
    1987
    Truck Model:
    C10
    Engine Size:
    5.7
    Thanks super sarcastic man lol
     
    Honky Kong jr likes this.

Share This Page