air conditioner only works part of the time

Asked by Guru91B1NB Dec 16, 2021 at 03:33 PM about the 2008 GMC Envoy

Question type: Maintenance & Repair

air conditioner works and then stops blowing cool air.  When this occurs i
noticed the temperature guage in down at the zero level.  coolant is sufficient

2 Answers
307,255

Gene answered 2 years ago

If this has an HVAC system when the outside temp drops to under 41 degrees the AC system is shut down by the computer, so if the temperature reading is 0 then the AC will not work.

Mark helpful
155,245

james answered 2 years ago

Sounds like a problem with the coolant temperature sensor. Possibly a bad connection at the sensor. When the computer loses the signal from the coolant temperature sensor it assumes that the engine is overheating and takes steps to help prevent engine damage. One of those things is the air conditioning is disabled. The fact that the engine temperature gauge drops is also a good indicator that the coolant temperature sensor is the problem, or the wiring going to it. Hope that helps! Jim

Mark helpful

Your Answer:

Related Questions

  • air conditioner only works part of the time 2 Answers

    air conditioner works and then stops blowing cool air. When this occurs i noticed the temperature guage in down at the zero level. coolant is sufficient

    2008 GMC Envoy

    -

    Maintenance & Repair

  • AC only workds intermittently 1 Answer

    My 2002 Envoy air conditioner sometimes works, and sometimes doesn't. When it workds the air is freezing cold so I know it's not out of refrigerant.My wife says it works great going downhill but not s...

    2002 GMC Envoy 4 Dr SLE 4WD SUV

    -

    Maintenance & Repair

  • Oil leak top of the engine 1 Answer

    Step one I cleaned my engine thoroughly... Step two I opened it two days later and see oil on the top left of the engine. Step three I took all the air cleaner stuff off the top of the engine I tigh...

    2002 GMC Envoy 4 Dr SLT 4WD SUV

    -

    Maintenance & Repair

  • No air blowing in envoy 3 Answers

    I have an 03 envoy and no fans are working in the front of the car for ac or heat. Back seat ones function. I have replaced the control module and blower motor. When i replaced the blower motor th...

    2003 GMC Envoy 4 Dr SLE 4WD SUV

    -

    Maintenance & Repair

  • air bags 1 Answer

    air bag light stays on passenger

    2006 GMC Envoy SLT 4WD

    -

    Maintenance & Repair

Shortcuts

Search GMC Envoy Questions

CarGurus Experts

  • #1
    FJ4072
    Reputation
    2,690
  • #2
    NITROGLORY1
    Reputation
    1,730
  • #3
    Ria Gonzalez
    Reputation
    860
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Trailblazer
17 Great Deals out of 1,301 listings starting at $18,995
Used GMC Yukon
11 Great Deals out of 919 listings starting at $5,890
Used Chevrolet Tahoe
10 Great Deals out of 763 listings starting at $7,499
Used GMC Acadia
33 Great Deals out of 630 listings starting at $6,900
Used GMC Canyon
23 Great Deals out of 830 listings starting at $5,477
Used GMC Sierra 1500
140 Great Deals out of 7,834 listings starting at $5,500
Used Jeep Grand Cherokee
138 Great Deals out of 3,611 listings starting at $4,295
Used Chevrolet Silverado 1500
170 Great Deals out of 7,481 listings starting at $6,995
Used Chevrolet Traverse
25 Great Deals out of 507 listings starting at $5,888
Used Chevrolet Colorado
33 Great Deals out of 1,145 listings starting at $2,499
Used Chevrolet Equinox
98 Great Deals out of 3,197 listings starting at $1,695

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.