why do i have such poor heat in my 1981 gmc 1500

Asked by bobcharrois Dec 04, 2013 at 12:20 PM about the 1988 GMC Sierra 1500

Question type: Maintenance & Repair

i have replaced the thermosat many times over the years, yet the heater still does't put out. replaced heater core 3 yrs ago, and has a new radiator. help it's winter and need heat.  please note;  1981 not 1988.

1 Answer
105

David answered 11 years ago

did you try replacing your hoses it could also be you heater switch in you truck too mine was a simple vacum leak

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,850
  • #2
    dragonflyoffshore
    Reputation
    11,810
  • #3
    John Saffrahn
    Reputation
    11,720
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford F-150
320 Great Deals out of 13,991 listings starting at $1,712

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.