Heater core replacement - TerrainForum.net: GMC Terrain Forum
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post #1 of 15 (permalink) Old 12-28-2019, 01:10 AM Thread Starter
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Heater core replacement

My mom owns an 07 torrent, fwd 3.4L. Last year our heater core went but the smell wasnt too bad and the heat still worked. this year its done for. car stinks, white film on window, yada yada.
I work as a service writer at a local shop and looked up the labour and it calls for 7.2, and from what my techs said, its based on a apprentice level of experience. I am by no means a master mechanic, but i have done a headgasket replacement and over haul on my 08 nox with a 3.4L and had little problems with that.
Should i tackle this myself? is it relatively easy to do but just a long process, is there any pointers? has anyone done this themselves? We really dont want to pay the $700 give or take in labour for a $100 part. She loves the car and it has been very good to us in our 8.5 year ownership.
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post #2 of 15 (permalink) Old 12-28-2019, 02:48 AM
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RockAuto is showing $56.79 for ACDelco heater core. Cheap enough.

If you’ve done a head gasket job you can definitely replace a heater core. I’d tackle it if I were you. Keep the $600+ in your pocket.

But I’d want the Shop Manual instructions, too. Maybe somebody here could help with that? Or you could pay for 1 month of AllData access? Or maybe just a YouTube video would be good enough? I think it’s just a matter of knowing the minimum number of fasteners to remove so you can ease the dash outward enough to pull out the heater core. Then ease it back in and refasten. It’s a shame there isn’t an easier way to do this ... like pulling it out of the firewall from the engine compartment side.
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2002 Impala 1LT (dlvd. Jun 2002): Summit White / 3.4 L V6 / FWD / Cassette-CD Combo /228k miles [01-FEB-2020]
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post #3 of 15 (permalink) Old 12-28-2019, 08:39 AM
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Originally Posted by Colt Hero View Post

But Id want the Shop Manual instructions, too. Maybe somebody here could help with that? Or you could pay for 1 month of AllData access?

I saw on Slickdeals.net that has mention of an end of year deal on all data for about $13 for a full year subscription.
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2010 Equinox LTZ 2.4 L 4 cyl, FWD, S/R Cardinal Red/Black
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post #4 of 15 (permalink) Old 12-28-2019, 09:56 AM
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Quote:
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Quote:
Originally Posted by Colt Hero View Post

But I’d want the Shop Manual instructions, too. Maybe somebody here could help with that? Or you could pay for 1 month of AllData access?

I saw on Slickdeals.net that has mention of an end of year deal on all data for about $13 for a full year subscription.
Found it! Coupon code is “YEAREND2019” at ALLDATAdiy.com.

LOL! It says “BMW and Mini are not available ... manufacturer’s choice”

I’ve always bought the (paperback) Factory Service Manuals from Helm, but I might not do it with the next vehicle purchase ... they keep outrageously jacking the price up every year!

Current pricing for 2017 Equinox Factory Service Manual:

$350 for electronic copy (USB for PC or Mac)

-OR-

$475 for traditional paperback version

It’s like “Mother Helm” saying, “Paper doesn’t grow on trees, ya know!!”

Ridiculous! My guess is they’re out-sourcing the printing of the Manuals now (?), or they’ve *always* done this (?), but the middle-man is (now) driving the cost of the paper manual through the roof (because Helm can no longer guarantee a certain volume of business with availability of the lower-cost electronic version)?

2011 Equinox 1LT (dlvd. Jan 2011): Summit White / 3.0 L V6 / FWD / Pioneer Stereo / 18" Wheels / 142k miles [01-FEB-2020]

2002 Impala 1LT (dlvd. Jun 2002): Summit White / 3.4 L V6 / FWD / Cassette-CD Combo /228k miles [01-FEB-2020]

Last edited by Colt Hero; 12-28-2019 at 10:06 AM.
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post #5 of 15 (permalink) Old 12-28-2019, 10:41 AM
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I use alldata for my fleet. If I have to print a diagram I do it. WiFi and the laptop in the garage works fine also. Can't beat it for the price. Plus additional vehicles and renewals are discounted. Also if my family wants me to fix their vehicle I make them pony up for a subscription up front, hey free labor and busted knuckles you can toss me $15 for a manual.
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post #6 of 15 (permalink) Old 12-28-2019, 11:49 AM
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Tried YouTube?



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GM6T70 Transmission-Gen II(M7W)
Crystal Red Tintcoat-Brownstone Leather-(FE2) Suspension-18" Wheels
Build Date: Nov. 04, 2013-Delivery Date: Nov. 25, 2013

Last edited by rednox301; 12-28-2019 at 11:51 AM.
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post #7 of 15 (permalink) Old 12-28-2019, 11:56 AM
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2007 Pontiac Torrent | Equinox, Torrent VIN L Service Manual | HVAC | Heating, Ventilation, and Air Conditioning | Repair Instructions | Document ID: 1707835

Air Conditioning and Heater Module Assembly Removal and Installation



Tools Required

J 39400-A Halogen LeakDetector

Removal Procedure 1. Disable the frontal and curtain air bags.
 2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
 3. Drain the engine coolant. Refer to Cooling System Draining and Filling.

Object ID: 1646735Click here for detailed picture of the image.
 4. Remove the evaporator outlet hose and liquid line nut fromthe thermal expansion valve (TXV).
 5. Remove the evaporator outlet hose from the TXV.
 6. Remove and discard the sealing washer from the evaporatoroutlet hose. Refer to Air Conditioning System Seal Replacement.
 7. Remove the evaporator outlet hose and liquid line from theTXV.
 8. Remove and discard the sealing washer from the liquid line.Refer to Air Conditioning System Seal Replacement.
 9. Install a protective caps to the evaporator outlet hose andthe liquid line to prevent contamination and desiccantsaturation.
Object ID: 1646757Click here for detailed picture of the image.
 10. Reposition the heater outlet hose clamp at the heatercore.
 11. Remove the heater outlet hose from the heatercore (1).
 12. Reposition the heater inlet hose clamp at the heatercore (2).
 13. Remove the heater inlet hose at the heater core.
 14. Plug the heater core and the evaporator core with cleantowels to prevent spillage when the HVAC module is removed.
Object ID: 931912Click here for detailed picture of the image.
 15. Remove the HVAC module seal nuts from the front ofdash.
 16. Remove the instrument panel (I/P) retainer. Refer to Instrument Panel Retainer Replacement.
 17. Remove the shift control bracket. Refer to Transmission Control Replacement.

Object ID: 933579Click here for detailed picture of the image.
 18. Remove the center floor air outlet duct by sliding the ductforward then up at the rear.
Object ID: 1284969Click here for detailed picture of the image.
 19. Remove the center I/P air outlet duct retainers from theinstrument panel tie bar.
 20. Remove the center I/P air outlet duct from the instrumentpanel tie bar.
 21. Remove the instrument panel tie bar. Refer to Instrument Panel Tie Bar Replacement.
 22. Disconnect the blower motor electrical connector from the I/Pwire harness.
 23. Disconnect the blower motor control module electricalconnector from the I/P wire harness.
 24. Disconnect the HVAC module electrical connector from the I/Pwire harness.
Object ID: 1647219Click here for detailed picture of the image.
 25. Remove the defroster duct retainer from the instrument paneltie bar.
 26. Remove the defroster duct from the HVAC module.
 27. Disconnect the I/P wire harness clips from the HVACmodule.
Object ID: 1647772Click here for detailed picture of the image.
 28. Remove the HVAC module from the vehicle.
Installation Procedure
Object ID: 1647772Click here for detailed picture of the image.


Important: Make sure the HVAC module seals are flush and even as theymeet their mating surfaces. This will reduce the chance of leaksand ensure proper fit.
 1. Inspect the front of dash seal for proper alignment.
 2. Inspect the seal mating surfaces to ensure there are noobstructions.
 3. Position the HVAC module in the vehicle.
 4. Install, but do not tighten, the seal nuts to the front ofdash.
 5. Install the instrument panel tie bar. Refer to Instrument Panel Tie Bar Replacement.

Object ID: 931912Click here for detailed picture of the image.


Notice: Refer to Fastener Notice.


Important: New front of dash seal nuts must be used to preventleaks.
 6. Tighten the HVAC module seal nuts to the front of dash. Drawthe HVAC module to the front of dash evenly by alternating betweenthe seal nuts.
Tighten
Tighten the nuts to 8 Y(71 lb in).

Object ID: 1647219Click here for detailed picture of the image.
 7. Install the defroster duct to the HVAC module.
 8. Install the defroster duct retainer to the instrument paneltie bar.
 9. Connect the I/P wire harness clips to the HVAC module.
 10. Connect the blower motor electrical connector to the I/P wireharness.
 11. Connect the blower motor control module electrical connectorto the I/P wire harness.
 12. Connect the HVAC module electrical connector to the I/P wireharness.
Object ID: 1284969Click here for detailed picture of the image.
 13. Install the center I/P duct to the instrument panel tiebar.
 14. Install the center I/P duct retainers to the instrument paneltie bar.
Object ID: 933579Click here for detailed picture of the image.
 15. Install the center floor air outlet by sliding forward ontothe front floor air outlet then down and rearward over the rearfloor air outlet.
 16. Install the shift control bracket. Refer to Transmission Control Replacement.
 17. Install the I/P retainer. Refer to Instrument Panel Retainer Replacement.

Object ID: 1646757Click here for detailed picture of the image.
 18. Install the heater inlet hose to the heatercore (1).
 19. Install the heater inlet hose clamp to the heatercore.
 20. Install the heater outlet hose to heater coreoutlet (2).
 21. Install the heater outlet hose clamp to the heatercore.
Object ID: 1646735Click here for detailed picture of the image.
 22. Ensure the mating surfaces are clean and free of debris, andinstall new seal washers to the evaporator outlet hose and theliquid line. Refer to Air Conditioning System Seal Replacement.
 23. Install the evaporator outlet hose and the liquid line to theTXV.
 24. Install the evaporator outlet hose and liquid line nut to theTXV.
Tighten
Tighten the nut to 20 Y(15 lb ft).
 25. Enable the frontal and curtain air bags.
 26. Fill the coolant. Refer to Cooling System Draining and Filling.
 27. Evacuate and charge the A/C system. Refer to Refrigerant Recovery and Recharging.
 28. Test the affected A/C joints for leaks using J 39400-A.
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post #8 of 15 (permalink) Old 12-28-2019, 11:57 AM
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2007 Pontiac Torrent | Equinox, Torrent VIN L Service Manual | HVAC | Heating, Ventilation, and Air Conditioning | Repair Instructions | Document ID: 1653294

Heater Core Replacement


Removal Procedure
Object ID: 1646777Click here for detailed picture of the image.
 1. Remove the HVAC module from the vehicle. Refer to Air Conditioning and Heater Module Assembly Removal and Installation.
 2. Remove the heater core cover screws from the HVACmodule.
 3. Remove the heater core cover from the HVAC module.
Object ID: 1648497Click here for detailed picture of the image.
 4. Remove the heater core from the HVAC module.
Installation Procedure
Object ID: 1648497Click here for detailed picture of the image.
 1. Install the heater core to the HVAC module.
Object ID: 1646777Click here for detailed picture of the image.
 2. Install the heater core cover to the HVAC module.


Notice: Refer to Fastener Notice.
 3. Install the heater core cover screws to the HVACmodule.
Tighten
Tighten the screw to 1.5 Y(13 lb in).
 4. Install the HVAC module to the vehicle. Refer to Air Conditioning and Heater Module Assembly Removal and Installation.
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post #9 of 15 (permalink) Old 12-31-2019, 06:37 AM
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Huh?? You gotta mess with the refrigerant of the AC System to replace a heater core in this vehicle?? Is that correct??

2011 Equinox 1LT (dlvd. Jan 2011): Summit White / 3.0 L V6 / FWD / Pioneer Stereo / 18" Wheels / 142k miles [01-FEB-2020]

2002 Impala 1LT (dlvd. Jun 2002): Summit White / 3.4 L V6 / FWD / Cassette-CD Combo /228k miles [01-FEB-2020]
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post #10 of 15 (permalink) Old 12-31-2019, 11:43 AM
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^^^^^^^^^^^


so godmother (GM ) says ............................
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