Question about 2000 GMC Jimmy

1 Answer

2001 gmc jimmy defroster-heater blower will not direct heat

My 2001 gmc jimmy has good heat, and blower levels work. Heat will only blow through vent and not to defroster (windshield).

Posted by on

  • 01gmc Mar 18, 2009

    2001 gmc safari air only blows through defrost only other post suggest loss of vacuum but need to locate vacuum line need some kind of diagram

  • Anonymous Mar 17, 2014

    were is the heat control valve on 1996 gmc jimmy

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Sergeant:

    An expert that hasĀ over 500 points.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 239 Answers

You have a vacuum leak

Posted on Jan 07, 2009

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

Heater works in cab blower works in cabnin just not blowing heat


hot air not being directed to vents? Check vaccuume hose under hood

Jan 29, 2014 | 2002 Ford E350

1 Answer

Heater problems


The fan motor may be in need of replacement.

Jan 20, 2014 | 1999 GMC Jimmy

1 Answer

1996 Montero Heater Blower not working


I assume your heater setting is electric control, if so either your defrost and floor heat switch failed or wire problem. For the air not hot, check the heat control valve on the top of the hose it should be in front of the firewall. I don't know your car is using mechanic valve or electric control valve. Anyway check there first. Good luck.

Nov 24, 2013 | 1996 Mitsubishi Montero

1 Answer

My heat wont blow out my vents just my defrost vents and it wont switch from ac to heat in my 97 gmc jimmy whats the problem


blend door sticking not sure if this year has an electronic actuator for the door or not

Sep 19, 2012 | 1997 GMC Jimmy

1 Answer

My 1996 Jimmy had the blower motor and heater core replaced and now the air will only blow out of the top defrost vent no matter what vent is selected for A/C or Heat. The vents were working before he...


If I remember correctly the mode door is vacuum operated. Check to make sure that there is vacuum to the control head. If not is is possible you knocked the vacuum line off when replacing the heater core. The default position for a vacuum controlled mode door on just about every vehicle is the defrost position. This is so if there is a failure in the system you will at least still have a clear windshield to see through.

Jan 21, 2011 | 1996 GMC Jimmy

1 Answer

My heat in my 1992 gmc jimmy barely comes out and barely any heat. My car barely heats up in the winter as it is. And i have checked the water levels and everything. So i was wondering could the problem...


Check the actuator motor on the heater and make sure the heater doors are fully opening and closing to direct the heat or ac. It is inside on the heater box in the end close to the driver side.

May 27, 2017 | 1992 GMC Jimmy

2 Answers

My heater will only blow out of the dash vents and won't move to floor or defrosters. Many have said to change the vacuum hoses. Can anybody tell me where to find them? Do I need to take apart the dash?


Heater flap works on vacum lines. My jimmy had same problem. Found out flap broke inside heater core. Gmc had a default. If something breaks it goes to defrost as safety precaution. Or a vacum leak in a hose to heater.

Nov 22, 2010 | 2001 GMC Jimmy

2 Answers

98 Jimmy throws out heat but won't switch to all vent options


Your going to have to replace the switch. The switch it self may have gone bad, since it works on a vacuum. It's common for the diaphragm in the switch assembly to go bad, if it's not the switch. Then it's going to be a bad actuator door and will need to be freed up. I have found it to be the switch it self get dirty and the vacuum needed to activate the actuator door is not there.

Good luck and keep me posted. When you turn the switch from defrost to heater, do you hear a air leak??? If you do then it's a good chance that it's the switch it self.

Dec 03, 2009 | 1998 GMC Jimmy

2 Answers

Low valume of air out of the heater


does the vents swithc from defront to vent and floor or its it stuck on defrost? if its stuck on defrost then open hood check for broken or cracked vac line to hose on the hood. if it switches then remove the blower resistor and inspect the evap core for clogging if it is clean it to restore the flow of air thru heater system

Jan 18, 2009 | 1991 GMC S-15 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

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

880 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

74241 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22082 Answers

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

Answer questions

Manuals & User Guides

Loading...