Question about 2001 GMC Jimmy

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2000 gmc jimmy heater core housing bolts

Cannot find last bolt holding heater core housing to firewall. It seems to be in the middle right from the cab side .

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May be under hood on firewall

Posted on Jul 23, 2009

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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.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Heater core replacement 2000 S10 4 3L slideshow picture
How to Change Heater Core on 1994 Chevy 10 Blazer GMC Jimmy Oldsmobile...
98 GMC Jimmy Heater Core Replacement Video Diary
Heater core replacement procedure 99 S10


Jun 16, 2016 | Cars & Trucks

1 Answer

Need to replace heater core for Ford Taurus 2000


Heater and Evaporator Core Housing Removal & Installation To Remove:
  1. Recover the refrigerant.
  2. Remove the instrument panel.
  3. Remove the right side cowl vent screen.
  4. Remove the screws and the water shield.
  5. Disconnect the vacuum supply hose.
  6. Clamp off and disconnect the heater hoses at the firewall.
  7. Disconnect the evaporator outlet spring lock coupling. Discard the O-rings.
  8. Remove the two condenser-to-evaporator line bracket bolts.
  9. Disconnect the evaporator inlet spring lock coupling. Discard the O-rings.
  10. Remove the three nuts at the dash panel.
  11. Remove the screws and the heater outlet floor duct.
  12. Remove the evaporator core housing bolt and nut.
  13. Remove the heater and evaporator core housing.
Heater and evaporator core housing removal/installation ford-10-00-404.gif

To Install:
  1. Install the heater and evaporator core housing in the vehicle. Secure the mounting nut and bolt.
  2. Install the heater outlet floor duct. Secure with the mounting screws.
  3. Install the three mounting nuts to the dash panel. Tighten to 53 in-lb (6 Nm).
  4. Install new refrigerant system O-ring seals lubricated in clean mineral oil. Connect the evaporator lines.
  5. Install the two condenser-to-evaporator line bracket bolts. Tighten to 80 in-lb (9 Nm).
  6. Connect the hoses to the heater core connections. Lubricate the coolant hoses with plain water only, if needed.
  7. Connect the vacuum supply hose.
  8. Install the screws and the water shield.
  9. Install the right side cowl vent screen.
  10. Install the instrument panel.
  11. Lubricate the refrigerant system with the correct amount of clean PAG oil.
  12. Evacuate, leak test and charge the A/C system.
  13. Add coolant as needed.
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Jan 08, 2011 | 2000 Ford Taurus

1 Answer

How to remove plastic housings to access heater core. Have already removed dash and other components.


remove the small 7mm head bolts surrounding the case cover and pull towards you gently.Just watch there are 2 hidden on the bottom near the floor.

Dec 27, 2009 | 2000 GMC Jimmy

1 Answer

Heater core assembly


  • Remove the front dash panel by turning the lower screws in a counter-clockwise direction, then unscrewing the single bolt on the lip of the instrument cluster and pulling the panel out. Remove the rear wiper switch and the 4x4 switches, if applicable. Lowering the tilt wheel will allow the panel to be totally removed.
  • Remove the radio, headlight switch module and glove box by turning their screws in a counter-clockwise direction.
  • Remove the main dashboard by unbolting it at the front, between the windshield and firewall. There are six to eight bolts holding it in, and, once they are removed, the dash can be pulled away from the firewall. Be careful not to pull too much, as the wiring harness could become damaged.
  • Drain the coolant system by turning the drain plug on the lower left corner of the radiator and allowing the fluid to fall into the drain pan. Uncapping the radiator can reduce the internal pressure.
  • Remove the heater core hose, on the upper left of the engine bay by pinching their hose clamps with a pair of pliers and pulling them off. Some models will have screw-type hose clamps; turning them counter-clockwise will loosen them. Age and heat may have stuck the hoses to the core nipples, and the hoses can be cut right at these nipples if necessary. Leave enough hose to reconnect the new core.
  • Unbolt the heater core's mounts with a socket wrench in a counter-clockwise direction. Once the bolts are free, the heater core can be maneuvered toward the windshield and slid out. Some coolant may splash out, so have a towel handy.
  • Replace the heater core with a new one by sliding it into place and securing the mounting bolts.
  • Reconnect the heater core's hoses, turn the radiator's drain plug clockwise to close it, then refill the coolant system with a 50/50 percent mix of coolant and water.
  • Reconnect the dashboard to the firewall, then replace the front dash panel and fasten its instrument cluster screw and bottom bolts.
  • Crank up the Jimmy and add coolant until the heater core is filled and blowing hot air.
  • Replace the radiator cap.
Good luck and make sure you have lots of time and use the camera on your phone and take pictures to use as reference.

Dec 10, 2009 | 1999 GMC Jimmy

1 Answer

How do you remove a heater core from a 2000 GMC JImmy


2000 GMC Jimmy heater core replacement in order to replace a heater core in a 2000 gmc jimmy the coolant must be completely drained and the entire dash including radio, vents and panel covers must be removed. four screws hold the top portion(closest to the windshield) in place. they can be found under the windshield defrost vent. after the entire dash is removed a safety harness under the steering column must be removed and the steering column must be dropped to the driver seat. the heater core housing(black plastic) is located right center of the dash and is a two part housing one piece on top of the other. the housing is attached to the fire wall and must detached before replacement can continue. after detaching the housing from the fire wall separate the housing by unscrewing the six screws that hold it together. the heater core is now exposed. disconnect the heater core from the two hoses and discard. installation is the uninstall process in reverse. it is a very long and drawn out process that is not accomplished in just an hour or two . make sure you have most of the day or several afternoons to finish . Good luck and take pictures with your cell phone to use as reference.

Nov 27, 2009 | 2000 GMC Jimmy

3 Answers

Do you have to remove whole dashboard on 96 gmc jimmy to remove and replace heater core?or can you do everything from underneath the glove box?


  1. Remove the front dash panel by turning the lower screws in a counter-clockwise direction, then unscrewing the single bolt on the lip of the instrument cluster and pulling the panel out. Remove the rear wiper switch and the 4x4 switches, if applicable. Lowering the tilt wheel will allow the panel to be totally removed.
  2. Remove the radio, headlight switch module and glove box by turning their screws in a counter-clockwise direction.
  3. Remove the main dashboard by unbolting it at the front, between the windshield and firewall. There are six to eight bolts holding it in, and, once they are removed, the dash can be pulled away from the firewall. Be careful not to pull too much, as the wiring harness could become damaged.
  4. Drain the coolant system by turning the drain plug on the lower left corner of the radiator and allowing the fluid to fall into the drain pan. Uncapping the radiator can reduce the internal pressure.
  5. Remove the heater core hoses, on the upper left of the engine bay, by pinching their hose clamps with a pair of pliers and pulling them off. Some models will have screw-type hose clamps; turning them counter-clockwise will loosen them. Age and heat may have stuck the hoses to the core nipples, and the hoses can be cut right at these nipples if necessary. Leave enough hose to reconnect the new core.
  6. Unbolt the heater core's mounts with a socket wrench in a counter-clockwise direction. Once the bolts are free, the heater core can be maneuvered toward the windshield and slid out. Some coolant may splash out, so have a towel handy.
  7. Replace the heater core with a new one by sliding it into place and securing the mounting bolts.
  8. Reconnect the heater core's hoses, turn the radiator's drain plug clockwise to close it, then refill the coolant system with a 50/50 percent mix of coolant and water.
  9. Reconnect the dashboard to the firewall, then replace the front dash panel and fasten its instrument cluster screw and bottom bolts.
  10. Crank up the truck and add coolant until the heater core is filled and blowing hot air.
  11. Replace the radiator cap.
The Jimmy uses a coolant-heated radiator core mounted in the dashboard to provide heated air into the passenger compartment. This heater core can become clogged and leak, as it is usually the lowest point in the coolant system and debris settles into it. Replacement of the heater core will take the average of about two hours to complete. Good luck

Nov 19, 2009 | 1996 GMC Jimmy

2 Answers

How do you get to the heater core in a 98 GMC Jimmy?


THE STEERING COLUMN (DO NOT ROTATE THE STEERING WHEEL AFTER THE INTERMEDIATE SHAFT IS REMOVE, YOU WILL BREAK THE SIR COIL), WINDSHIELD MOLDINGS, AND DASH HAVE TO BE REMOVED FIRST. UNDER THE HOOD THE BLOWER RESISTOR, R/H INNER FENDER WELL, HEATER HOSES TO THE HEATER CORE AND SEVERAL NUTS AND BOLTS HOLDING THE HEATER PLENUM TO THE FIRE WALL INCLUDING THE HIDDEN BOLT UNDER THE BLOWER RESISTOR IN THE EVAPORATOR CORE AREA. THEN FINALLY THE BOLTS ON THE INSIDE OF THE TRUCK HOLDING THE PLENUM TO THE FIREWALL.

NO DISRESPECT INTENDED BUT IF YOUR NOT A TALENTED MECHANIC I WOULD FIND ONE OR HIRE ONE THAT CAN DO THE JOB FOR YOU. THIS IS QUITE INVOLVED FOR A NOVICE.

May 27, 2009 | 1998 GMC Jimmy

1 Answer

Heater core replacement


You do not have to do anything with the air conditioning, its all inside car under right side of dash. 1. go under hood and unhook heater hoses and bracket( if equiped) from core tubes. 2. go under dash right side remove 13mm bolt far right under dash thats so you can pull dash out a little ways to get cover off heater where heater core is.3. 1/4 in. socket set and 1/4 in. socket take screws out holding cover on look close there is one hidden top far right can't remember how maney 5 or 6 i think, screws all out use a little finess and remove cover and there will be your heater core. Good luck.

Apr 13, 2009 | 1995 GMC Jimmy

1 Answer

How do you remove the heater core frm a '99 chev S10 Blazer ZR2?


i think the inner fender and right front wheel has to come off there are bolts from under the hood that have to come outgood luck.

Nov 24, 2008 | 2000 Chevrolet Silverado

1 Answer

2001 GMC Jimmy Heater Core Replacement


back by the exhaust up around the case verry hard to get to good luck jimmy rate as fixya

Sep 15, 2008 | 2001 GMC Jimmy

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