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1999 GMC Sierra 1500 Question: Turned on heater to blow on floor and heard a pop. Now air blows from floor only

 

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Karl G, 5.3L V8, Richardson, TX, April 01, 2013, 12:03
 Rookie

Air stuck blowing from floor and defrost only

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  • Answer #1

    Greg's Orange Auto (13738 Answers) , Orange, CA - (714) 361-9386
    globalhelper April 01, 2013, 12:46
     Master

    POSS BLEND DOOR ACTUATOR ISSUES

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    Karl G, April 01, 2013, 15:22
     Rookie

    thanks for the direction to start . could you tell me where blend door is located. Have not been under a dash in 20 yrs. Im a fork lift mechanic now.

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    globalhelper, April 02, 2013, 05:27
     Master

    there are 3 blend doors rt, left and middle. 1 is by gas pedal one is center of dash amd pne is under glove box area.

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