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
101,815

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
30,555

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 67,982 nationwide Sierra 1500 listings starting at $3,795.

ZIP:

Own this car?

Share your experience with others.

2008 GMC Sierra 1500

Write a car review

Review another car

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,460
  • #2
    dragonflyoffshore
    Reputation
    11,550
  • #3
    John Saffrahn
    Reputation
    11,510
View All

Know more, shop wisely

Search

Related Models For Sale

Used Chevrolet Silverado 1500
4,127 Great Deals out of 127,581 listings starting at $2,995
Used Ford F-150
6,027 Great Deals out of 133,965 listings starting at $1,100
Used GMC Sierra 2500HD
541 Great Deals out of 21,641 listings starting at $5,995
Used Toyota Tundra
1,157 Great Deals out of 32,368 listings starting at $3,299
Used Chevrolet Silverado 2500HD
1,018 Great Deals out of 30,559 listings starting at $499
Used Dodge RAM 1500
89 Great Deals out of 1,539 listings starting at $1,999
Used GMC Yukon
641 Great Deals out of 11,921 listings starting at $1,300
Used Toyota Tacoma
2,048 Great Deals out of 35,536 listings starting at $500
Used Chevrolet Tahoe
1,159 Great Deals out of 22,817 listings starting at $2,000
Used GMC Canyon
335 Great Deals out of 10,497 listings starting at $4,500
Used Ford F-250 Super Duty
1,303 Great Deals out of 43,338 listings starting at $2,999
Used Chevrolet Corvette
756 Great Deals out of 12,406 listings starting at $2,800

Used Cars for Sale

2024 GMC Sierra 1500 For Sale
112 Great Deals out of 46,188 listings starting at $24,942
2023 GMC Sierra 1500 For Sale
305 Great Deals out of 4,235 listings starting at $30,635
2022 GMC Sierra 1500 For Sale
180 Great Deals out of 1,685 listings starting at $26,800
2021 GMC Sierra 1500 For Sale
335 Great Deals out of 4,084 listings starting at $17,999
2020 GMC Sierra 1500 For Sale
218 Great Deals out of 2,441 listings starting at $17,995

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.