Question about 2000 GMC Jimmy

1 Answer

No heat comming out of fan

I have no heat comming out of the vents . I have replaced the temper gage themous stat , flushed the radiator out . What else could it be?

Posted by on

  • Anonymous Oct 01, 2008

    I had the same issue. I was working way to much to fix myself. I drove to my local goodyear and expecting a 500$ bill but nope. 30$ later and a quick flush of the heater core and it was all set. Good luck im sure its the problem. You may want to eventually change the heater core due to build up or you could just flush out every year if that suits ya. 50$ for a heater core at autozone.



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 59 Answers

These are well known for clogged Heater Cores. I would have the heater core flushed if possible.

Posted on Sep 14, 2008


1 Suggested Answer

  • 2 Answers

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

a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Why still over heating, replaced all last year, water pump, stat, flushed rad

Possible causes....Poor internal circulation or heat exchange due to blockage or corrosion/scale.
Likely causes.... Electric rad fan (if so equipped) failing to turn on, or broken fan belt (if so equipped), or broken, damaged or missing fan blades, or blockage of air into radiator (lots of bug guts, plastic, paper, debris in general), or damage to radiator itself. (cooling fins are mostly bent over restricting air flow or circulation, scale build up inside of the radiator...not always "flushable" preventing good heat exchange.
One or some of these maybe causing your grief. Good Luck.

Feb 25, 2016 | Cars & Trucks

1 Answer

Y it over heats

Radiator may be clogging up. Have you had it flushed ?

Jun 25, 2015 | 2001 Lincoln Continental

1 Answer

I have an 02 aztek an the heat gage gets into the

is the cooling fan working correctly, is gauge reading correctly. I know you said you replaced heat sensor but gauge still could be giving wrong reading.

Sep 03, 2014 | Cars & Trucks

1 Answer

2004 explorer 4.0 coolant reservoir boils over when stabolized at normal level, no heat when level drops temp indicator normal

go to autozone rent the free tool called a block tester buy the fluid for it (about $8.00 us)drive the car make sure the resivour is about 3 inches down so you dont suck any fluid into block tester. pour blue fluid into block tester put it in antifreeze resavour. squeeze bulb sucking air from resouivour for up to 2 minutes if fluid turns yellow your head gaskets are leaking. I think you may find this to be your problem

Feb 12, 2013 | 2004 Ford Explorer XLT

1 Answer

I have a 99 5.4 expiditon.had heater coil put on . when i pull my boat9pontoon0 it wants to over heat no other there such a thing as a weak t/stat or should i flush out the radioator it has over...

if the radiator has never been flushed i would definatly flush it as well as change the thermostat. Radiator flush is cheap and a thermostat shouldnt be more than $15. is your cooling fan working?

Jun 24, 2011 | 1999 Ford Expedition

2 Answers

I had a new water pump installed on my 2005 jeep grand cherokee laredo as it was leaking. After the installation, the temperature gage is still running hot. Could it be the thermostat?

Thought I answered this one already. but here's the short version. Yes , change the t stat after servicing wp. They become unreliable after any high temps (above normal). Check the electric fan, and the mechanical fan to make sure both are working properly. If all else fails. remove radiator and back flush. often overheat or high temps can loosen block rust and obstruct part of the radiator core.
When re-filling, turn heater on high to eliminate air pockets in system.
Good luck with it
If you need more info, just ask!

Apr 05, 2009 | 2005 Jeep Grand Cherokee

2 Answers

Car runs hot - can overheat

try flushing the cooling system and then bleed the cooling system. hope this helps.

Oct 17, 2008 | 1996 Saturn SL

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

Related Topics:

334 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

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

Answer questions

Manuals & User Guides