Question about GMC Cars & Trucks
Retrace all steps and see what is unplugged.
Posted on Apr 22, 2015
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Posted on Jan 02, 2017
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
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
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
By removing most of the dashboard. its behind the glove box buried under all of the stuff you see there and then some.
It is possible, but not easy and takes time, but its worth it because a shop will charge you over 500 and the part is around 100.
If you get into it and get stuck, post another question.
Posted on Sep 19, 2010
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