Question about GMC Cars & Trucks

1 Answer

How do I change a heater core in a 1991 GMC Sierra is there a site that I can go to that shows how ?

The truck does not have ac where can I buy a defrost bland door

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • GMC Master
  • 14,384 Answers
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 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.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

WATER DOES NOT CIRCULATE THRU HEATER CORE ON 2005 GMC SIERRA


It sounds like the bypass valve is stuck open. Check bypass valve and vacuum hoses attached to it.
Hope this helps.
Bob

Jan 06, 2015 | 2005 GMC Sierra

1 Answer

Is there a site i can go to show how to change heater core on 1991 gmc 5.7 motor


autozone.com make a free account, login, put in the year, make and model. Look at the free repair guides.

Dec 12, 2014 | GMC Sierra Cars & Trucks

1 Answer

How do i remove a heater core on a 5.7 liter motor


you left info for a 91 gmc sierra no such thing try again

Nov 08, 2014 | 1991 GMC Sierra

1 Answer

Which hose on the heater core is the heater inlet hose on 2001 gmc Sierra 5.3l


the hose from the intake to the heater core is always the inlet , it is usually the one closest to the engine the return is the one closest to the fender or ac box

Sep 01, 2014 | Cars & Trucks

1 Answer

1991 gmc sierra 1500 p/u-can not locate blower motor speed control resistor. I've looked under dash, pulled out glove compartment, looked on firewall, I give up.


If its not near the blower motor, it may be on the hvac box on the firewall in the engine compartment. It depends on if it has ac or not.
They are usually behind the glove box mounted in the side of the heater box.

Sep 26, 2013 | 1991 GMC Sierra

1 Answer

2003 gmc sierra heat will not blow hot air. Changed thermostat, resistor, both heater core hoses are hot to touch and the coolant is full


if the blower motor motor is working then its a blocked heater core or a faulty shut off valve ,i would need to get my head under the bonnet and then the dash to find the fault to be honest

Nov 06, 2011 | 2003 GMC Sierra

1 Answer

How to replace heater core


http://cgi.ebay.com/ebaymotors/Used-1991-GMC-Sierra-Truck-Service-Shop-Repair-Manual-/130460028224?pt=Motors_Manuals_Literature&hash=item1e60060d40

Dec 02, 2010 | 1991 GMC Sierra

1 Answer

At idle, Heater Core Return Line is flowing only


two things--first replace your cabin air filter.second reverse flush your heater core with a garden hose and that should remove the build up of material in your heater core and restore the flow,hope this helps

Oct 21, 2009 | 2000 GMC Sierra

1 Answer

GMC SIERRA 1991 HEAT NOT WORKING


be more specific,head unit could mean cylinder head/s could mean thermostat unit,were the hoses hooked up right? thermostat should be checked before installing,very easy to do could be stuck shut.was the heater core checked or flushed out?lots of maybys,wish it was in my garage..

Oct 16, 2008 | 1991 GMC Sierra

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

38 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

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

Loading...