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#1
11-09-2010, 04:02 PM
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NO HVAC speed 5
Have changed the blower motor and had no speed 5. Then I changed the resistor. Still no speed 5. Is there a fuse that controls this? 98 GPGT single manual contol. 115K.
Last edited by gpgt98; 11-09-2010 at 04:03 PM. Reason: more info 
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#2
11-09-2010, 04:43 PM
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Re: NO HVAC speed 5
I think there is a fuse and maybe a fusable link. May be some that has the wiring diagram can point us in the right direction?
Last edited by doctorhrdware; 11-09-2010 at 09:21 PM.
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#3
11-09-2010, 05:35 PM
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Re: NO HVAC speed 5
Look in the intrument panel fuse box (glovebox) for the fuse marked HVAC-HI.
__________________
'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines
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#5
11-10-2010, 04:21 PM
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Re: NO HVAC speed 5
Check for voltage at the fuse socket with the ignition on and the blower turned to speed 5.
__________________
-2000 Grand Prix GTP 170,000mi (daily driver) -2000 Olds Alero 100,000mi (soon to be DD with gas at $3.45/gal) -1997 Chev K1500 4x4 115,000mi (Natalie's truck [nans_grandprix]) AF "2.0" Community Guidelines Conservative Victory 2012!!! "I'll Keep my Guns, Freedom, and Money. You can Keep the Change!" ----->>>>> Did You Know? <<<<<-----
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#6
11-10-2010, 05:12 PM
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Re: NO HVAC speed 5
The other possibility is a bad climate control head unit. Position 5 from the switch supplies a ground to energize the hi-speed blower relay which happens to be located on the blower motor resistor assembly but that was replaced.
__________________
'08 Pontiac Grand Prix GXP (Dark Slate Metallic) - LS4 5.3L V8 '02 Oldsmobile Alero GL2 - LA1 3400 V6 '99 Buick Regal LS - L36 Series II 3800 V6 '03 Honda CR250R MX - 2 Stroke 250cc '97 Pontiac Grand Prix GTP - L67 Series II 3800 V6 Supercharged (Sold) Timeslip 08/12/06 AF Community Guidelines
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Re: NO HVAC speed 5
