lack of heat
5

Asked by rustedout86 Sep 15, 2010 at 09:04 AM about the 1986 Chevrolet Blazer

Question type: Maintenance & Repair

any info on trouble shooting lack of heat on a 86 K5 blazer?  I just replaced the thermostat with success.  Is it the heater core or is there something else I could try?

2 Answers
5,345

Jon answered 14 years ago

Are you sure that you ave completely bled the cooling system? There could be air trapped in the heater core assembly. Also, with the vehicle at operating temperature, check the temp of the heater hoses coming out of the heater core via the firewall pass through. If that doesnt point you in the right direction then it could be a multitude of other things. E.g. plugged radiator, weak water pump, plugged heater core, etc.

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • lack of heat 2 Answers

    any info on trouble shooting lack of heat on a 86 K5 blazer? I just replaced the thermostat with success. Is it the heater core or is there something else I could try?

    1986 Chevrolet Blazer

    -

    Maintenance & Repair

  • no heat 1 Answer

    yes i am not getting any heat just cold air

    1998 Chevrolet Blazer 2-Door 4WD

    -

    Maintenance & Repair

  • limited heat?? 1 Answer

    I have a 2004 chevy blazer, heat only comes through center vents, bothing on floor or defrost?? What could be the issue

    2004 Chevrolet Blazer LS 4-Door 4WD

    -

    Maintenance & Repair

  • No Heat -- Tried everything except???? 1 Answer

    I am by now well aware that this Dexcool thing is bad news. I have had 2 mechanchs attempt different things and one is a retired GM mechanic who worked in the plant I believe. Both of them said Dexcoo...

    2001 Chevrolet Blazer

    -

    Maintenance & Repair

  • What is wrong with my heat? 1 Answer

    MY heat does not work. I've replaced the thermostat and still nothing. It blows out cold air like it is on AC all the time. What fuses could I check or what should I do?

    2000 Chevrolet Blazer LS 2-Door RWD

    -

    Maintenance & Repair

Shortcuts

Search Chevrolet Blazer Questions

CarGurus Experts

  • #1
    Andrew Olsen
    Reputation
    4,270
  • #2
    Rowefast
    Reputation
    3,570
  • #3
    yetilikesbeer
    Reputation
    2,420
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Camaro
15 Great Deals out of 282 listings starting at $7,995

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.