Question about GMC W3500

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Relay behind glovebox us buzzing

06gmc w3500 relay is buzzing.

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 1861 Answers

SOURCE: EFI underhood relay

I would replace the relay that gets hot, and make VERY SURE that the relay pins fit real tight in the female receivers for the relay. A *** slight *** amount of clearance at the connection will arc & def heat up the relay. Once relays get really, really hot, it, at times, they may no longer be reliable.

Posted on Sep 30, 2008

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wireguy212
  • 1627 Answers

SOURCE: relay for turn signal buzzes when turned on

The only reason that a relay buzzes is it is getting either a poor ground or a lack of power,clean your body grounding points and make sure you have a full 12v supply to the relay.If you have low voltage to the relay check the fuse and clean off any corrosion,if not that replace the turn signal switch./

Posted on Dec 05, 2009

  • 89 Answers

SOURCE: Where is flasher relay on 2003 gmc w3500

Flasher Relay is on the driver's side, under the dash, above kick panel, mounted in convenience center

Posted on Nov 02, 2010

  • 1 Answer

SOURCE: 2000 GMC W3500 diesel (ISUZU NPR),cranks but no

fuel line pick-up broken in the fuel tank

Posted on Feb 14, 2011

  • 4977 Answers

SOURCE: 2006 chrysler pacifica air blinder

the blower relay switch controls the blower motor,this sounds more like an air blend switch on the heater control head on the dash,not making the switch over in that switch.it could be the air blend door motor on the heater duct under the dash on the passenger side.this can be checked with a scan tool that has the capability to communicate with the bcm computer on this car.

Posted on Mar 17, 2011

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1 Answer

2001 w3500 with iszuzu will not crank unless you pull cover off relay and close relay manually


Check the current wire to the relay, check if it is making good contact trace the wire and check that it has not come loose at the other end. Check the fuses

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Where is flasher relay on 2003 gmc w3500


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Nov 02, 2010 | 2001 GMC W3500

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Were is the flasher located for blinkers


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Jun 21, 2010 | 2001 GMC W3500

1 Answer

Where can I purchase a repair maual GMC w3500


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