GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 7 of 7
  1. #1
    Sr. Apprentice
    Join Date
    Nov 2009
    Location
    Central California
    Posts
    42

    Angry Heater ac problems

    I've just noticed that my heater and ac dosnt blow as hard as it used to it's still hot and cold but it dosnt blow as hard any clue on what's wrong. Thanks


    99 Chevy silverado
    6.5 inch FTS lift
    16x12 weld cheyennes
    31x12.5 boggers
    electric fan conversion
    flowmaster 10 series exhaust with 5 inch tip dumped
    autopage remote starter

  2. #2
    Sr. Apprentice
    Join Date
    Nov 2009
    Location
    Central California
    Posts
    42

    Question

    Anyone?...


    99 Chevy silverado
    6.5 inch FTS lift
    16x12 weld cheyennes
    31x12.5 boggers
    electric fan conversion
    flowmaster 10 series exhaust with 5 inch tip dumped
    autopage remote starter

  3. #3

    Default

    could be the blower motor. not sure if it speeds up based on voltage or not. ie the higher settings send more current etc.
    David
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
    http://www.gmtruckclub.com/forum/sho...Silverado-2500
    1960 Land Rover Series II 88
    2001 Pontiac Sunfire
    2013 Toyota Avalon Limited (Wife's Car)
    NRA Life Member

  4. #4
    Sr. Apprentice
    Join Date
    Nov 2009
    Location
    Central California
    Posts
    42

    Default

    Yeah it goes hard then soft without touching the controls any clue if its pricey and difficulty of install


    99 Chevy silverado
    6.5 inch FTS lift
    16x12 weld cheyennes
    31x12.5 boggers
    electric fan conversion
    flowmaster 10 series exhaust with 5 inch tip dumped
    autopage remote starter

  5. #5

    Default Possible Solution

    Hey do you know if your truck has the cabin air filters? They might be dirty ass hell and not being able to pass the ac or heater air. I had no idea they existed on my truck til last summer I wondered why my a/c was blowing out little a/c on high so I thought it was the freeon, I checked the line and it was full so I did some reach and found that I had cabin air filters, I found them and when I pulled them out they were COVERED in 7 yrs worth of dirt and all kinds of stuff, as soon as I put the new ones in...BOOM the air was blowing thru easy...that cured m problem...you should check if yours has them. Im pretty sure it does!!!
    Joser
    2001 Silverado 5.3L
    13% tint all around
    7" Fabtech lift kit w/ leveling kit
    HD front end conversion
    Blacked out Billet Grille w/ Black Bow-Tie
    33x12.5x20 on 20x10 Fuel Hostage
    Smoked out tail lights
    Dual Flow Masters/ Exhaust Cut outs
    K&N CAI
    Custom Tuner
    Corvette Servo
    180 Stat
    10K HIDs


    "Spending money on things we dont need to impress people we dont know"

  6. #6

    Default

    If the air goes soft and hard it could be the motor getting worn out, maybe you should open the housing thathas the motor and see if there is anything maybe wound up with it. Course it could be just old and the brushs are almost gone.


    1995 Chevy Silverado
    Fully loaded!!!
    4Wheel Drive
    5.7 Liter
    Blue
    Best Engine In The World!!!!!
    Once i had a nearly dead battery and was only able to get 1 slow crank per attempt, Once to the fifth crank she fired up! (True Story)
    ________________________________________
    Do you have a Tahoe,Yukon or a suburban? Join My Group
    http://www.gmtruckclub.com/forum/group.php?groupid=26

  7. #7
    Sr. Apprentice
    Join Date
    Nov 2009
    Location
    Central California
    Posts
    42

    Default

    Quote Originally Posted by Thundare View Post
    If the air goes soft and hard it could be the motor getting worn out, maybe you should open the housing thathas the motor and see if there is anything maybe wound up with it. Course it could be just old and the brushs are almost gone.
    Any clue on where the motor is?


    99 Chevy silverado
    6.5 inch FTS lift
    16x12 weld cheyennes
    31x12.5 boggers
    electric fan conversion
    flowmaster 10 series exhaust with 5 inch tip dumped
    autopage remote starter

Similar Threads

  1. Heater Problems
    By Metaluzc in forum Chevy Silverado Forum (GMC Sierra)
    Replies: 1
    Last Post: 02-01-2010, 06:43 PM
  2. Heater problems
    By 96Z71VORTEC in forum General Chevy & GM Tech Questions
    Replies: 8
    Last Post: 11-12-2009, 04:55 PM
  3. Heater problems
    By jb9164 in forum General Chevy & GM Tech Questions
    Replies: 3
    Last Post: 02-21-2009, 10:05 PM
  4. Heater Problems
    By Mrs Leadfoot in forum Audio, Video & Gadget Tech
    Replies: 3
    Last Post: 04-01-2008, 05:40 PM
  5. Chevy Silverado Heater problems blower problems
    By bidutch in forum GM Powertrain
    Replies: 3
    Last Post: 12-13-2007, 05:59 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •