We replaced the heater core on the 1990 GMC K1500 GMT400. Heater core: GM Genuine Parts 15-60059 Heater Core www.amazon.com... Foam tape: 1" x 3/8" www.amazon.com...
Through the glove box pull the blower motor and carefully clean the evaporator core. Many of these are filled with debris from leaves and dirty. There are several good videos on RU-vid to show you how. Will drastically improve your air flow for heat and ac.
I need to do that. I paid 1350 for a whole new ac in my 94 and the air flow isn’t strong at all. I hope that will fix the issue. I’m sure it hasn’t been cleaned, but who knows. I bought it back in February.
@@OBSKEV mine was filled up with leaves and all kinds of stuff like I figured it would be. I cleaned the evap and rinsed it down good. The air flow is better I will say.
@@OBSKEV yea it was cold but it froze up and I had to turn the ac off and just let the fan blow. The coils would freeze over cuz it was clogged. It still does that but just takes longer now.
Omg this is so much easier than I anticipated, the last one I did was with my buddy on his Sonoma, 2003 I believe and it's behind the entire dash ugh 😩
I wish all cars were this easy lol. I daily a 94 and have never replaced mine. Always heard it was easy to swap, now I know haha. I changed the one on my dad's 2nd gen dodge and had to require the help of my buddy to maneuver the dash out of the way, it was not very fun lol
Love the info on your videos. I'm replacing my interior and you've saved me a LOT of headaches! While the dash is out I'm gonna change my heater core since it's been leaking and has the underside of the carpet wet.
I was at my woman's the other day, saw a canal flowing from my passenger door, I was so confused then had the disgusting sad realization and I was partially heart broken ngl, if it wasn't the daily id rig it but I'm gonna have to put my nose on the grindstone to fix er up
Lol except the advance auto here in New Orleans got me a non gm one with an extended clip included in the box for 50$ Took under an hour to change. Thanks for the vid, I'd have never found all the screws not in a million years
To remove the evaporator core do we need any extra special tools to get it out I need to replace evaporator core but shops are asking for to much $ I need help , help pls any suggestions thank 😃
If you are handy there is a way to replace the evaporator from the engine compartment. No dash removal necessary. Unlearned how by watching a few YT videos. I know this is a 2 year old comment but other people will see this comment in the future.
I have 95 Chevy suburban K1500 I’ve done new AC compressor, relay, resistor, blower motor and etc. ALL OEM PARTS I just did my heater core and now my climate control panel lights turn off when I turn the headlights on and it’s blowing straight heat even when set on HIGH AC. PLEASE HELP!!
Do these heater cores tend to leak antifreeze? I have a leak and though it was the hose but I checked and no holes and even bought a new clamp same issue maybe this is my issue?
I believe that it's controlled with a blend door. You are just redirecting air flow and not bypassing the flow of anything other than the air. And wait till you get the pleasure of replacing the blend door actuator for the heater core. The truck has 3 actuators but that heater core door is the worst. It only has 2 screws. One isn't all that bad, the other is that bad
@@dennisweber7803 Check if the vent actuator is operating correctly, its behind the center of the dash, slightly towards the passenger side. I replaced damn near everything until i found out it was that haha
