Question about 1999 GMC Jimmy

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I need a printable shop manual on how to replace my heater core on a 99 gmc jimmy envoy

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Its a pain in the arse you have to basically take your whole dash out! i had to do it. I'll look around for a manual and post if i find.

Posted on Jun 07, 2011

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Posted on Jan 02, 2017

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Heater core replacement 98 chevy S10 2.2L engine


Tyrone, Check the attached links,instruction and guides, the last link has some very good info. and pics. on S10 heater core replacement. Good luck.
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Hot to cold air in 1999 GMC Envoy


heater core plugged. remove heater hoses, use tap water to flush out core..

Jan 17, 2013 | 1999 GMC Envoy

1 Answer

Heater core replacement 99 gmc envoy


as far as i remember you need to remove dash . but open up glove box and see how much room you have . but i think you will need to take dash off .

Dec 04, 2011 | GMC Cars & Trucks

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Replace heater core


Hello,

To replace the core of your GMC 2001 Jimmy, You will be needing these instruments, Repair manual, Socket set, Screwdrivers, once You have them together, please follow the steps below:
  1. Lift up your car's hood and locate the heater core. If you are not sure where the core is located, an auto parts store employee or a repair manual can help.
  2. Remove the screws or bolts that hold the heater core in place. You may need to remove other parts of the car before being able to access the heater core.
  3. Disconnect the intake and outtake hoses from the heater core. You may need a special tool to remove the couplings that connect the hoses to the heater core (refer to your car model's repair manual.)
  4. Remove the heater core. Be careful not to tip the core over, as coolant will leak out.
  5. Reconnect the upstream and downstream hoses on the new heater core in the same matter that they were attached to the faulty core. Leaks can occur if the hoses are not connected properly.
  6. Screw or bolt new heater core in place.
  7. Finally, replace all of the removed car parts.
That is how to replace Your heater core.
Hope this was helpful. Thank You for using FixYa!!!

Jan 12, 2011 | 2001 GMC Jimmy

1 Answer

How do i replace heater core


you have to remove the hole dash and drop the steering column to remove the heater core that is on passenger side if you don't have some experience you should take it to a shop. You could go to a parts store and get a manual for your vehicle.

Oct 08, 2009 | 1991 GMC S-15 Jimmy

2 Answers

How do ypou remove heater core on a 1997 gmc


If yoou are working on a 1997 GMC Jimmy S or T-10 the assembly must come out to access heater box removal to replace heater core.

Aug 23, 2009 | 1997 GMC Jimmy

2 Answers

1998 Jimmy-heater core


Heater core is located under the dash board, as Jenkins said you need to remove the dash board amd all other panel to access it, you will have to spend at least 2 hours to remove them if you're not familiar with it, becareful not to break plastic locks and tabs. Get your self a service manual for your car and it will be a great help.

Oct 17, 2008 | 1998 GMC Jimmy

2 Answers

NEED TO REMOVE DASH TO REPLACE HEATER CORE ON 1995 GMC SONOMA


yes you have to remove the whole dash assambly to replace the heater core..have fun i had to do mine twice.my new heater core lasted about 6 months.

Aug 01, 2008 | 1997 GMC Jimmy

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