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HOW TO: GM Truck Heater Core

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Uploaded by on Dec 1, 2010

Instructions on replacing a heater core in a Chevy or GMC k1500. This was done on a 1997 GMC K1500.

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Autos & Vehicles

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Uploader Comments (brettlinton)

  • I have a 1995 Silverado Z71 (K1500)...and it has the same heater core setup....Yep. Autozone and the Repair manual even says to take out the dash LOL....Thats crazy LOL....Anyways, I removed all the bolts i could see but still felt like there was another one I had not removed ...but your correct...the heater core was right there.....Just waiting to be replaced :)...Mine turned out to be good :) How many bolts were there total in this?

  • @whitwellhigh Sorry I can't remember exactly how many bolts were on the cover, and I would check for you but I don't have the truck anymore. I do remember there being one bolt that was impossible to see and tricky to find roughly centered on the cover close to the firewall. Also, I think the cover kind of snaps in so I had to give it a bit of a yank once all the bolts were out.

  • just changed one out of my 1996 jeep grand cherokee. this is childs play compared to that task. 12 hours on that jeep, puuled the whole dash and everything to the firewall, damn!

  • @crownpoolnspa yeah I've seen some heater cores that are ridiculous to access, I found everything on my GMC was pretty easy to work on.

  • is this pretty much the same for a 2002 s10...ive seen some complicated ass videos, ur video was simple.

  • @xSFU420x I'm not sure I've never done one on an S10, this video was on a 1500 so could be completely different.

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  • Good video. Now if I can just determine if mine is bad or not???

  • Hey far out thanks for posting. Appears to be the procedure I need to know for my '91 GMC 1500. Now need to decide if my impaired left hand will allow me to get the job done.

  • has any one done this on a 97 sonma need help!!

  • @starvengers67 This usually means the drain hole/tube in the bottom of the unit is plugged. The drain allows condensation to go out on the ground ie: when a/c unit freezes then thaws. If the drain gets plugged it will accumulate in the blower housing.

  • Thanks So Much For This Video, I was having troubles with all the bolts close to the firewall.

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