1998 GMC Savana Logo
craig Galloway Posted on Jan 13, 2012
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Heater won't blow

Already checked fuses and replaced blower motor

1 Answer

Ricky Peters

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  • GMC Master 2,620 Answers
  • Posted on Jan 13, 2012
Ricky Peters
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Joined: Jul 26, 2008
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Check your blower motor resistor connection.Turn switch and fan on then wiggle the resistor pigtail fan should turn on if not replace resistor.These get to hot and usally melt the pigtail and loose their connection.

  • Steve Hallett
    Steve Hallett Jan 14, 2012

    Did you replace the relay?

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5 Related Answers

emissionwiz

Marvin

  • 85242 Answers
  • Posted on Dec 10, 2008

SOURCE: heater blower motor stays on when ignition turned off

Replace the blower motor relay, it is located in the underhood fuse (driver side) box GM part #15016745

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Anonymous

  • 3 Answers
  • Posted on Dec 15, 2008

SOURCE: Heater blower not working at all

check all fuses and plugs

Anonymous

  • 69 Answers
  • Posted on Jul 31, 2009

SOURCE: 2003 Chevy AC Fan Blower Motor troubleshooting

first check the fuse or relay.. this will be the cheapest sollution and easiest to check.

emissionwiz

Marvin

  • 85242 Answers
  • Posted on Sep 28, 2009

SOURCE: blower motor not working. replaced blower motor,

did you replace the speed control resistor near the blower motor?

mindreader

Jim DuBreck

  • 578 Answers
  • Posted on Oct 25, 2009

SOURCE: a/c heater won't blow... Blower works even

HTR fuse is for the blower.

Your model has a thermal switch - that prevents the blower from operating until the engine is at (about) 95 Degrees. Two possibilities here, the heat sensor and the switch connector.

1. Remove switch connector and jump connector terminals. If blower now operates, replace switch.
If not.....
you have either a resistor failure in the resistor connector or a failed wire between the control switch and the blower....

do you need more detail?
'98 model may have a switch (3 position) for fan speed. I would suspect the switch first (after having demonstrated that the blower DC motor works).

With the switch on the "next to highest" setting, move the control from "VENT" to Heat to A/C.

If you get ANY fan noise, the issue is with the function selector on the Environmental Control panel

If you get NO fan noise, then the fan control switch

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