Question about 2002 GMC Safari

2 Answers

AC/Heat problem When I bought my 2002 GMC Safari a year ago, the front AC and Heat worked, but only in M1 and M2 speeds. Now it does not function at all. My husband replaced the control on the dashboard with two different units and still no air. We've checked the fuses both in the vehicle and under the hood and no luck. What could be causing the problem and how do we fix it?

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 11 Answers

The blower resistor / relay pack may have gone bad. It is located in the engine compartment, below the blower motor (passenger side). If you remove the coolant overflow/WW solvent bottles, you will see the connector. The wiring diagram is in the 1995-2005 Chilton Astro/Safari manual, and the dealer has a multifit replacement part.

Posted on Jun 08, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 3,051 Answers

There is a electronic sensor that starts going bad after time i had a astrovan that did the samethimg i changed out the sensor and vola it worked again saved about $300 by doing this myself that sensor should be located by the unit (providing it is not a internal sealed sensor ) contact cragen aor autozone for further info they may call the sensor somthing else
ok hoipes this helps regards mike

Posted on Aug 09, 2008

  • Michael Thomas
    Michael Thomas Aug 11, 2008

    i contacted kragen for u and they have told me that u will have to call them and tell them the same thing that u told me year of the vehical ect ect and yes they said that the sensor that i spoke of has a couple of different it just depends on the exact part but they said they should be able to help you get what you need ok



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

Rear heat blower in 96 gmc safari not working at all

there is a bad connection on fan speed switch remove and check for a melted connector.

Apr 23, 2014 | GMC Safari Cars & Trucks

1 Answer

2002 safari heat/ac fan wont work

Multi-Diag Access J2534 has the function for air condition, such as Diagnosis of cooling electronic,
Reading settings cooling circuit,Test servo actuators

Nov 05, 2012 | 2002 GMC Safari

1 Answer

We have a 1999 GMC Safari in excellent condition. The heater works (blower motor), the AC works, but nothing comes out of the main dash ducting. It stopped all of a sudden. When the Ac is turned on- it...

had 2002 with same problem,repair vacuum line on drivers side manifold. it will fix the ducting problem. when that was fixed had no heat solved by removing vacuum line from four way valve and plugging found under ac condenser passenger side . well Worth a try and cheap

Aug 05, 2010 | 1999 GMC Safari

1 Answer

97 safari fan does not blow while on heat, ac, hot, cold any speed, fuse (well labled) is good. Thx in adv.

Check to see if is blowing out defrost vents if it is you have a vacuum leek. The tube is hard to get to take of dog house you will see a group of tubes on connected to a clear plastic junction. Once you get the dog house off one of the tubes goes to your manifold vacuum fallow them its very thin and the engine heat makes it brittle and they fall apart . Mine did same 2 shops 500 dollars and they never found or fixed it used window washer tubing to fix 2 years ago still works great,

Nov 08, 2009 | 1997 GMC Safari

1 Answer

My gmc 2004 safari blower is not working

passenger side under dash. Your going to find two clear vacuum hoses have been knocked lose "likely by someones feet." simply reconnect the vacuum hoses together . Problem solved.
The blower switch is controlled by a vacuum line..
let me know if this helps....

Aug 08, 2009 | 2002 GMC Safari

1 Answer

My 1998 GMC Safari ac works well (cold) in the rear. The front AC is just barely cool. Ac reads a good charge, not over or under charged. What could cause this?

The blend door is not fully closed for the front. GM's are bad for that. Also check the vaccuum line for the door.

Jul 15, 2009 | 1998 GMC Safari

1 Answer

99 Yukon - Blower Motor Not Working

replace the A/C control head... very simple to do. Pop off the dash panel and pull the control head out... unplug the 3 harnesses and there you go.

Jun 02, 2009 | 1999 GMC Suburban

1 Answer

Rear heat or rear air conditoner not workin in my 1997 gmc safari

two different problems !

Rear heater problem: find under the hood where is hose for cooling liquid goes to front heating core!
you will see there also vacuum tubesgoing in to little valve ! disconnect the vaccum tubes ( engine off)
and spray in wd 40 in to the vlave ... valve is stuck and wont open flow to rear heater !

you do not have to replace tha thing . its very well made and because you dont turn this often in summer
it gets stuck. i had same problem. also make sure vacuum is working - Engine running turn rear heater on - vacuum sucks to open valve. and before that make sure fuse is ok .

for rear AC mine does not work either and it is leak on pipes that go from front to rear .. 10 feet of pipes and tubing $$ expensive repair ... forget it ... open the window...


Jan 22, 2009 | 1997 GMC Safari

1 Answer

AC and controls no operating

replace the BLOWER MOTOR RESISTOR this will allow your low through high controls to work again.. as far as the squealing sound oil the fan or replace it
just saved you 100.00 pleas return the favor with the highest rating

Jul 13, 2008 | 2002 GMC Sierra

Not finding what you are looking for?
2002 GMC Safari Logo

275 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

77169 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22265 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