Heater blower

Asked by Guru5DJC8 Dec 23, 2017 at 12:49 PM about the 2008 GMC Sierra 1500 SL Crew Cab 4WD

Question type: Maintenance & Repair

The heater blower only works occasionally
but mostly does not blow. The heat is hot
but doesn't come out like it should. The
coolant level is good. What else can I
check?

3 Answers
103,105

KenF answered 6 years ago

Check you have proper voltage to blower motor, if not check resistor pack or control. If all checks out then you may just have a bad blower motor.

Mark helpful
30,915

Tom answered 6 years ago

when the engine is running do you hear a sound from under the dash when you change from defroster to legs, or and other flow direction? If not than you may have a kinked vacuum line (vacuum is used to open/close diverter doors)

Mark helpful

Your Answer:

Related Questions

  • Heater blower 3 Answers

    The heater blower only works occasionally but mostly does not blow. The heat is hot but doesn't come out like it should. The coolant level is good. What else can I check?

    2008 GMC Sierra 1500 SL Crew Cab 4WD

    -

    Maintenance & Repair

  • Heater 1 Answer

    heater does not blower air

    2005 GMC Sierra 1500 SLE Extended Cab LB

    -

    Maintenance & Repair

  • Heater blower 4 Answers

    The heater blower stops working then come back on, sometimes it stops for a few days then starts working again, what could be the problem, and the fan speed switch seems to only work on high.

    1999 GMC Savana G1500 Passenger Van

    -

    Maintenance & Repair

  • heater blower 3 Answers

    i replaced the heater bloer resistor and still have nothing...help

    2000 GMC Jimmy 4 Dr SLE 4WD SUV

    -

    Maintenance & Repair

  • heater 2 Answers

    Heater not blowing out hot air. Thermostat was replaced, worked 1 day then quit.No leaks! all hoses going to heater coil Hot.

    2012 GMC Sierra 1500 SLE Ext. Cab 4WD

    -

    Maintenance & Repair

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 7,037 nationwide Sierra 1500 listings starting at $3,950.

Postal Code:

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,810
  • #2
    dragonflyoffshore
    Reputation
    11,750
  • #3
    John Saffrahn
    Reputation
    11,690
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Silverado 1500
217 Great Deals out of 5,900 listings starting at $2,975
Used Ford F-150
323 Great Deals out of 15,226 listings starting at $3,295
Used GMC Sierra 2500HD
19 Great Deals out of 1,645 listings starting at $12,900
Used Toyota Tundra
42 Great Deals out of 1,161 listings starting at $9,395
Used Chevrolet Silverado 2500HD
25 Great Deals out of 1,238 listings starting at $9,990
Used GMC Yukon
9 Great Deals out of 781 listings starting at $1,225
Used Toyota Tacoma
46 Great Deals out of 1,036 listings starting at $8,708
Used Dodge RAM 1500
7 Great Deals out of 68 listings starting at $1,995
Used Ford F-250 Super Duty
26 Great Deals out of 1,179 listings starting at $8,995
Used Chevrolet Tahoe
15 Great Deals out of 822 listings starting at $5,995
Used GMC Canyon
16 Great Deals out of 1,316 listings starting at $7,495
Used Dodge Charger
36 Great Deals out of 626 listings starting at $4,888

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.