89 K1500 | removing the heater core, cleaning system
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- Опубліковано 12 вер 2024
- In this video I remove the heater core in my 1989 K1500, loop the lines and refill the system with a coolant system flush solution. I hope this works to clean the system out.
#k1500 #c1500 #obstrucks
Hey Maq, I love your videos. They are so much fun to watch and you approach the problem with the same thinking that I do! ( The radiator flush) lol,...if I was still getting nasty stuff out I'd be all day and all night with the water hose! I'm going to replace my heater core tomorrow. Thanks Again! Subscribed!!!
I'm replacing everything with the rear air conditioning system on a 93 GMC Suburban. I'm replacing all the corroded metal lines that run down the side of the truck. What an absolute nightmare. Fortunately several people make rubber replacement lines that have the proper fittings on them. I'm replacing the evaporator expansion valve and heater core and installing new heater hoses and replacing the metal tee fittings with brass that split the heater lines up for the front and back. I had to cut the aluminum lines into small sections because they put the lines on before the body is placed on the frame and because this truck has running boards. All the steel fittings on the aluminum lines were frozen solid so I twisted off the fittings on the condenser and the rear evaporator. I would change the evaporator for the dashboard but it requires you to remove the entire dashboard to get it out! It was working so I'm going to leave it in and clean it out. I managed to get the receiver dryer but broke loose after I removed the electric junction box but the little section of aluminum line that leads to the fittings where the orfice tube is was NOT coming off so it and the compressor itself which was replaced 2 years ago will be all that remains from the 31 year old dual HVAC system! The hardest part is getting everything out from the old system. I replaced everything that refrigerant flows through except for the front evaporator and the R4 compressor. I think I will order the front heater core since you showed me how to get it out here. This is not a job for the faint of heart! I've been at it since last Friday and today is Tuesday, still waiting for the evaporator and condenser and I'm just going to buy a box of 5,/8 ths and 3/4 in heater hose localy.
Just bought a k1500, you are doing amazing work, greetings from northern Sweden!
Thanks! And, good luck with yours. I hope to visit Sweden one day.
Howdy Maq, I just bought an 89 k2500 last night for just a little more than $1000 (if only it looked as nice as yours 😂). Thanks for all the truck videos, I’m sure I’ll be watching more as I get into this new hobby
Awesome! I'm peanut butter and jealous. I miss my 2500. The first time I loaded the k1500 with mulch, it sagged so much. Congratulations man!!
Did someone run the truck with straight water for a long time? Is that rust in the old coolant? Hope the chemical flush works.
Apparently, the flush did it's job. And I think old dexcool was the problem. The truck was unregistered and neglected for years. I think it just sat too long with either old dexcool or dexcool mixed with something else. It has a paint job, but it needs tons in work.
@@MaqsVids - I bought my '97 in 2000 and one of the first things I did was to flush out all the old orange Dex-Cool and replaced it with the regular Prestone. I'm glad I did.
Could have been a leak additive like BARS LEAKS as well. I added this to my own truck and it looks very similar.
Hey Maq, great, entertaining vid, as usual. I was born in '89, grew up leaving the tag on my hats, and still do it 😅 ... didn't see a thermostat when you reconnected, did you leave it out and run the heat? Also, did you determine if heater core lines were leaking at the bend or bushings?
Thanks man!! If I still work caps, I probably would leave the tag on too. 😉 I glossed over it, but I did put the thermostat back in. I am still not sure where the leak was coming from. Part of me thinks it was where the hoses connected. But, there was also evidence of a leak in the cover that you have to remove to take the heater core out. I guess one could leak to the other. In any event, when I am done flushing it, I will install the new one and leave the cover (and carpet) off. That way I could keep an eye on it for a few hundred miles.
Great video as usual. Clear audio without obnoxious music or noise in the background. I have a couple questions. Did you not have to remove the dash to get to the heater core and did you replace the evaporator core as well.
Hi! Thanks! You do not have to remove the dash. Just the cover over the heater core. I did not replace the evaporator core.
If you haven't seen it, I removed the cover over the heater core in this video. The only difficult part was the screw closest to the firewall.