Truck won't start when heater controls don't come on why

Asked by keith Nov 16, 2021 at 12:17 PM about the 1992 GMC Sierra 1500 C1500 SLE Standard Cab LB

Question type: General

Why does my 92 gmc not start when the heat controls
don't come on the rest of the dash is working but not the
heat I've changed the relays and tried everything I could
think of still nothing the truck starts when heat controls
work but won't start when heat controls don't work

2 Answers
310,175

Gene answered 2 years ago

I had one like this in my shop, found it to be the ignition switch, replaced the switch and the problem went away. When it happens try slightly turn the key one direction or the other and see if it starts working.

Mark helpful
35,325

lrodri911 answered 2 years ago

You need to troubleshoot before replacing parts by guessing. If starter relay is not getting signal when u try to start it, trace it back to loose connection or no signal coming out of ignition switch under steering column.

Mark helpful

Your Answer:

Related Questions

  • Truck won't start when heater controls don't come on why 2 Answers

    Why does my 92 gmc not start when the heat controls don't come on the rest of the dash is working but not the heat I've changed the relays and tried everything I could think of still nothing the tr...

    1992 GMC Sierra 1500 C1500 SLE Standard Cab LB

    -

    General

  • my truck wont start 2 Answers

    I tried jump start my tractor with my 2015 GMC sierra 1500. now everything is dead. won't start, non working instrument panel

    2015 GMC Sierra 1500 SLE Crew Cab LB 4WD

    -

    General

  • my truck wont start 1 Answer

    tried to jump start my tractor using my 2015 sierra 1500 4WD. now my truck wont start

    2015 GMC Sierra 1500 SLE Double Cab 4WD

    -

    General

  • Jack and spare tire when purchasing a used truck on adealer lot 2 Answers

    I bought a used 07. Gmc Sierra 4x4 at a dealership has a spare tire but no Jack or extension rod to lower down the spare tire is it the law when purchasing a used truck on dealership it should hav...

    2007 GMC Sierra 1500 SLE2 Ext. Cab SB 4WD

    -

    General

  • Engine won't start 2 Answers

    New spark plugs and wires new module new distributor cap and rotor new fuel pump and it just shut off all of a sudden on a 1989 GMC Sierra 1500 5.0 liter what else could it be now

    1989 GMC Sierra 1500 C1500 Standard Cab LB

    -

    General

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,810
  • #2
    dragonflyoffshore
    Reputation
    11,750
  • #3
    John Saffrahn
    Reputation
    11,690
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford F-150
323 Great Deals out of 15,226 listings starting at $3,295
Used GMC Yukon
9 Great Deals out of 781 listings starting at $1,225

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.