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Repacement of heater core of sonoma gmc truck

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  • GMC Master
  • 3,103 Answers

Parts store can give you a printout of the proceedure..

Posted on Jan 01, 2014

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Posted on Jan 02, 2017

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tripletauto
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SOURCE: 1996 GMC Sonoma heater core

the dash has to come out

Posted on Sep 11, 2008

  • 1 Answer

SOURCE: NEED TO REMOVE DASH TO

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.

Posted on Mar 30, 2009

dnewcombe1
  • 1564 Answers

SOURCE: Replacing heater core in 2000 GMC sonoma. Dash is

If the dash is removed you've saved about 9 10ths of the job endurance. Look around, what you believe to be, the perimeter of the heater box. I cannot, and no one else can, tell you exactly where the bolts and nuts that mount the heater box are. Therefore you must viually sixe the box and check outide in the engine compartment and inside under the dash for the mounting bolts.You'll want to start by removing the heater hoses. Then starting at the passenger side engine compartment look for a group of 10mm or 7/16ths nuts retaining the housing and remove them. Do the same inside. The housing is usually held together with screws or clips, it changes year to year. Keep a log or pix of the wires and cables and hoses(vacuum) that are connected to the housing for reassembly. You'll need to "roll" the box out from under the dash depending on how much of the dash has been removed. The core is easy to spot for is has two hoses sticking out, and, is encircled with clips or screws . Also make sure you remove the bracket around the two entry hoses if it has one. Thank you, Dana

Posted on Oct 04, 2009

  • 3 Answers

SOURCE: Heater doesnt work blows cold air, replaced

This is what I did to solve the exact same problem.I got a pump that you can hook to a drill that has garden hose connections on it.I made 2 hoses to pump into my heater core and hook to the pump. I bought some radiator cleaner at Auto Zone and put it in a 5 gallon pail with about 2 gallons of hot water.I pumped the cleaner from the pail into the OUTLET side of the heater core.(By going in the outlet side you are back flushing the core.) I put an old cloth over the top of the bucket and let the outcoming cleaner run onto this cloth acting as a filter for the dirt coming out of the heater core and let the pump run about 10 minutes. Believe me,A LOT!!!!!!!!!!! of dirt,rust etc. came out of my heater core. The heat now works excellent! Good luck.

Posted on Jan 29, 2010

unvme
  • 266 Answers

SOURCE: how to replace heater core 1998 gmc sonoma

your heatercore is behind the glovebox, get you a cordless drill, #2 phillips, torx 10,15,20 , 8mm, 10mm, sockets, you are going to remove 1/2 of the dash, take picts of were the 200 bolts and screws come out at, it should take you 12 hours to fix it, have fun

Posted on Sep 06, 2010

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1 Answer

NO HEAT IN MY 02 GMC SONOMA top heater core hose is cool to the touch but the bottom one is hot..just replaced the intake gasket and stat and got all the air out


I would suggest jacking the front of the vehicle as high as you can to get the trapped air in heater core out through the system and thats the only way I know of doing it air will rise to highest spot (radiator) when it is jacked up higher than heater core..........Providing you hooked up your heater hoses the way they were when you took apart.

Feb 09, 2012 | 2002 GMC Sonoma Extended Cab

1 Answer

My 2000 gmc truck is leaking water from the heater and vapor enters the cab through the air vents


your heater core is leaking in to the cab.you need to change the heater core

Sep 07, 2011 | 2000 GMC Sonoma Extended Cab

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1995 gmc sonoma heater core removal, replacement. i need help removing the DASH.


About the heater core, in the manuel I bought at Auto zone, it gives all the steps and bolts necessary to unloose. The dash will swing out at the bottom, don't forget to remove the bolts under the speaker covers.
R/ Randy

Apr 14, 2011 | 1995 GMC Sonoma

1 Answer

How to change heater core 1995 gmc sonoma


NOT FUN. this is a minimum of a 2 hour job up to 6 hours depending on skills. the entire dash has to be removed from the truck. the heater core itself is located just of center of the fire wall towards the passenger. A LOT of hardware will have to be taken out and kept track of properly or you will have problems getting it all reinstalled correctly

Feb 12, 2011 | 1995 GMC Sonoma

1 Answer

Replace heater core on a 94 sonoma


follow your basic instinct on this one ,thats how 99% of mechanics work

Oct 23, 2009 | 1994 GMC Sonoma

4 Answers

The heater still won't work after I changed the thermostat on my


Get a female garden hose adapter from the local hardware store. Disconnect the heater hose from behind the fan pulley and attach the hose connection. Disconnect the other heater hose behind the alternator, aim it towards the ground and flush water through the heater core. This worked on my truck.

Feb 12, 2009 | 1999 GMC Sonoma

1 Answer

1996 GMC Sonoma heater core


the dash has to come out

Sep 11, 2008 | 1996 GMC Sonoma

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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