Question about 1993 Chevrolet C1500

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How many relays would a 1993 Chevrolet C1500 have?

I have a bad relay on my 93 Chevrolet C1500 but I am not sure what it goes to so I can troubleshoot the problem. Any ideas?

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Well lets see here, just from memory, there should be one for the AC clutch on the compressor near the drivers side fender/firewall. One for the fuel pump pretty close to that one. Then there should be another one on the passenger side of the firewall that is the high speed fan relay for the heater/ac (Only clicks on when on high). I dont think there is a horn relay on that year. There may be others, but thats all that comes to mind at the moment.

Posted on Jan 24, 2013

  • 4 more comments 
  • Rebekah Villanueva
    Rebekah Villanueva Jan 24, 2013

    This one was located next to the turn signal flasher on the driver's side firewall.

  • Mike Ebz Jan 24, 2013

    Under the dash?

  • Mike Ebz Jan 24, 2013

    How many terminals does it have?

  • Rebekah Villanueva
    Rebekah Villanueva Jan 24, 2013

    Yes it's under the dash. It has 5 terminals.

  • Mike Ebz Jan 24, 2013

    Also, does it look like factory equipped? (Mounted with a bracket) or aftermarket (normally zip tied up or hanging by the wires) =)

  • Rebekah Villanueva
    Rebekah Villanueva Jan 24, 2013

    Factory equipped.



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The fuel pump relay only energizes for 2 seconds when you turn the key on. It re-energizes once the pcm detects engine rpm. What you are seeing may be the normal operation of the system.

If the vehicle still won't start or the fuel pump dosen't run you will have to trace the wiring from the relay to the pump and check your grounds.

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Check the ignition control module and the pick-up coil in the distributor..

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SOURCE: where would i find the fuel relay switch on a 1993

The fuel pump relay should be in a fuse box under the hood. Depending on which engine you have it could be mounted on the firewall on the passenger side of the engine compartment.

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SOURCE: how many (timing)degrees should my 1993 chevrolet

TDC (top dead center) But you can advance it to 4° for better gas milage in Europe.

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