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  1. #1

    Default heater not switching function

    hey there,

    anybody know how to fix heater, will not divert airflow to defrost windshield. changes from floor to mid vent, but will not send flow to windshield. very bad in ice storms and blizzards here in northern WI. please help

  2. #2

    Default

    Try one of the technical threads and see if anyone is at home. Welcome to this site
    2010 Chevy Silverado Z71 ext cab.4x4
    72 Monte Carlo 350-415 hp- sold (June 2011) to pay medical bills
    79 Impala 350 4bbl 375 hp- sold (June 2011)to pay medical bills
    oldfart2413@gmail.com

    "If He asks you to go a mile go two"

  3. #3
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    mfleetwood's Avatar
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    Default

    Hey Renegade, I did a search and found there could be several different solutions depending on what you are driving, year, etc. I think you will need to provide more information about your ride in order for someone to be able to give you some guidance.


    Mike (Denver, CO) - 2008 Sierra 1500 Z71 SLE 5.3L 4WD

    SUSPENSION: Rancho 4" Suspension Lift; Rancho RS9000XL Shocks; Rancho Skid Plates; Rancho MyRide Wireless Shock Controller;
    TIRES:
    BFG All Terrain KO 315/70/17
    DRIVE TRAIN: 4.56 Gears; Detroit TrueTrac Differential; True Cool 40k Transmission Cooler
    PERFORMANCE: DiableSport Predator Tuner; Custom Tuned by Diablew; Magnaflow Exhaust; AFE Cold Air Intake
    ELECTRONICS: Kenwood DNX6180 Touchscreen; Subthump box w/10" Kicker; Driver Information Center (DIC); Rear View Camera
    ACCESSORIES: Westin Brush/Grill Gaurd; Westin Nerf Bars; Truxedo Tonneau; 20% Tint; Tow Mirrors w/Heat & Signals

  4. #4

    Default

    I had an issue last month with my 2000 impala where the HVAC system works off the vacuum system. Blew the lines out with air and all seems good now...
    http://www.gmtruckclub.com/forum/sho...ala-HVAC-issue
    Not sure if that helps.
    Finally a signature and Avatar! I also posted some pics in the Gallery.
    2011 2500HD Crew Cab 4X4 Z71 6Liter.
    2011 Outback Travel Trailer 260FL
    So Happy to not be on the edge of GVWR Over Load!!

  5. #5

    Default gmc yukon hvac

    hi again,

    sorry for no info-duh! joined 2 years ago but my 97 yukon 4x4 gives me so little trouble that i forget how to behave in forums.....

  6. #6
    Sr. Apprentice BoneHead's Avatar
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    Default

    Quote Originally Posted by renegade1957 View Post
    hi again,

    sorry for no info-duh! joined 2 years ago but my 97 yukon 4x4 gives me so little trouble that i forget how to behave in forums.....

    Don't know how to break this easy, so I'm just gonna say it...

    You just jinxed yourself bubba. You're gonna have all kinds of issues now lol
    1998 K1500 Suburban
    1977 Chevelle Malibu

    "I'm proud to defend your right to be an idiot!" From a friend in the military.

  7. #7
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    mfleetwood's Avatar
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    Quote Originally Posted by renegade1957 View Post
    hi again,sorry for no info-duh! joined 2 years ago but my 97 yukon 4x4 gives me so little trouble that i forget how to behave in forums.....
    No worries....just wanted to make sure you got the best response possible

    Unfortunately, I do not know; but hopefully, someone will have the answer for you shortly


    Mike (Denver, CO) - 2008 Sierra 1500 Z71 SLE 5.3L 4WD

    SUSPENSION: Rancho 4" Suspension Lift; Rancho RS9000XL Shocks; Rancho Skid Plates; Rancho MyRide Wireless Shock Controller;
    TIRES:
    BFG All Terrain KO 315/70/17
    DRIVE TRAIN: 4.56 Gears; Detroit TrueTrac Differential; True Cool 40k Transmission Cooler
    PERFORMANCE: DiableSport Predator Tuner; Custom Tuned by Diablew; Magnaflow Exhaust; AFE Cold Air Intake
    ELECTRONICS: Kenwood DNX6180 Touchscreen; Subthump box w/10" Kicker; Driver Information Center (DIC); Rear View Camera
    ACCESSORIES: Westin Brush/Grill Gaurd; Westin Nerf Bars; Truxedo Tonneau; 20% Tint; Tow Mirrors w/Heat & Signals

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