Question about 2000 GMC Jimmy

2 Answers

My 2000 GMC Jimmy has been blowing cold air. We have changed the thermostat and flushed the radiator and heater core. The air is not as cold but is not warm. What do we do next?

Posted by on

Ad

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Airjoc does not have a clue to your problem, I take you want to have warmer air not cooler ac. check the control system, if you have a vacum system tou may have a leak, if it is controlled by voltage, check the control panel and the control box. Also open the hood, place the heater on high but not on any defrost setting preferrably on just the floor setting. Start the engine and see if the ac compressor is running. If it is, the control panel is bad.

Posted on Oct 09, 2009

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 691 Answers

Flushing the radiator changing the thermostate and the heater core will not have any effect to the vehicle AC systems to make the AC systems blow cooler air. you need to have the systems check by the AC shop to check if you have any leaks, it may be low on refrigerant and may just need recharging. any ac shop can tell you exactly what wrong with it and what need to be done. You may have a small leak somewhere causing the ac unit to be low on refrigerant which they can put a die in the systems to detect any leaks you may have.

Posted on Oct 04, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I can't get heat in the cab, 2000 GMC Jimmy S15


well either your heater core lines are clogged ore the heater core is just bad

Jan 30, 2013 | 2000 GMC Jimmy

1 Answer

My 2000 gmc jimmy blow cold air heater


common for this vehicle to have clogged heater core

Dec 16, 2012 | 2000 GMC Jimmy

2 Answers

The heater only blows cold air,the radiator is full,thermastat is working and the engine temp is within normal ranges.


I've had this problem. 2000 GMC uses a closed coolant system. Meaning takes and returns coolant from and to the Reserve Bottle and has little air in the engine and heater systems.
If everything appears ok but no heat. "Air Lock" is the most likely cause. (With interior heater set to full heat) Solution; 1. Make sure water pump works. 2. Drain about 1/2 engine coolant into container. 3 Remove both heater hoses from engine side and flush heater core in both directs through heater hoses with garden hose. 4. Reattach heater hoses in correct locations. 4. Refill engine with coolant. 5 Start engine and run for 2 min., use caution when topping up coolant.
6. Most 2000 GMC have twist off caps with plugs located mid way on heater hoses. with engine cold, start engine these caps may be loosened to allow trapped air to escape. Do not attempt with engine hot due to hot coolant injuries. This may take more than one attempt to remove all air from heat system. 7. Lastly most 2000 GMC water pumps have a bleeder plug,( 3/8" square driver plug) located on the water pump. With egine cold this plug should be removed to remove any air. Reinstall plug with thread sealant.
Hope this helps cheers

Dec 09, 2010 | 2000 GMC Jimmy

2 Answers

We live in a cold climate. Our 1998 GMC Jimmy Heater will not provide cabin heat. The engine warms normally. We replaced the thermostat just to make sure the coolant was warm enough. The blower operates...


UNHOOK BOTH HEATER HOSES AND FLUSH OUT HEATER CORE
DO IT FOWARD AND BACK FLUSH / COVER DIST. CAP OR YOU WILL
FILL IT WITH WATER / IF IT CLEARS OUT HOOK HOSES BACK UP AND
BLEED AIR OUT OF SYSTEM / IF IT DOES'T CLEAR OUT HEATER CORE
WILL NEED TO BE REPLACED (DASH COMES OUT TO DO HEATER CORE)

Dec 08, 2010 | 1998 GMC Jimmy

1 Answer

No heating on jimmy....fans blows cold air only....heater core is fine


Mine did the same thing you need to have heater core flushed out. Dexcool coolant clogs it up get it and the radiator back flushed and changed to regular coolant. This should fix the problem.

Oct 17, 2010 | 2000 GMC Jimmy

2 Answers

2000 satin sl1 heater blows cold air, had the


my 2000 saturn sl blows cold air with the heater on. I changed the thermostat,and checked out my heater core.Still blows cold air.

Jan 17, 2010 | 2000 Saturn SL

2 Answers

I have a 2000 Chevy Silverado pickup, and the heater will not blow hot air. I replaced the thermostat, and nothing changed. The radiator was flushed and filled in the last two months as well. I have all...


once truck is warm check both heater core hoses to make sure they are both warm if not then check the cold water valve could be stuck shut not allowing coolant to travel in to heater core.

Jan 05, 2010 | 2000 Chevrolet Silverado 1500

1 Answer

Heat not working on 98 gmc jimmy. Replaced thermostat, checked fluids. Blows air but no heat. Have automatic temp controls and when put on auto nothing at all comes through vents but if put back to manual...


Flushing the heater core is fairly easy just remove the 2 hoses going to the heater core and use a different hose if you have to and use a garden hose to backflush the blockage out..this may take as much as 5-6 times also check for vacumn lines missing or disconnected or breaks pinched ect... some where in the vicinity of the passenger side under hood by the a/c lines ect. good luck hope this helps

Dec 06, 2009 | 1998 GMC Jimmy

3 Answers

2000 GMC Heater Problem


I had problems with a similar truck,a 1998 GMC diesel after checking to make sure the control cables were operating the blend door and blowing the mess of the heater core,I replace the thermostats.Still no heat turns out there was a small amount of debris collecting in the fitting for the inlet hose at the thermostat housing after removing it and blowing out the lines the heat was fine.

Nov 19, 2008 | 2000 GMC Jimmy

2 Answers

200 gmc jimmy st heater


Had similar problem in my 2000 Jimmy. No hot air from heater. Had the shop (Midas) disconnect heater hoses at the fire wall and blow out the heater core with air hose. Got rust and junk blown out. Hooked up and flushed system with new anti freeze. Got lots of heat now.

Oct 25, 2008 | 2000 GMC Jimmy

Not finding what you are looking for?
2000 GMC Jimmy Logo

493 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

76164 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...