Clean out your A/C evaporator core
#1
Clean out your A/C evaporator core
When you finally have to replace your blower fan, don’t forget to clean out all the debris that is stuck inside because Chevy didn’t put in a filter. This is a 99 blazer.
now this was after I pulled some out and stuck the shop vac hose in.
now this was after I pulled some out and stuck the shop vac hose in.
#2
If you don't need to replace your fan, just take this part out. I looked in my shop manual and couldn't find the name of this part but it's what plugs into the blower motor. remove it with 3 7/32 screws for better access. Looks like its the blower motor resistor on the auto HVAC. So you are out of luck if you have manual controls. Shop manual has same directions for manual and auto for the resistor which is wrong as they are in different locations and a different part. Rock auto had the picture to confirm that part.
I used a nylon brush used to clean refrigerator coils.
I used a nylon brush used to clean refrigerator coils.
Last edited by laxman21; 09-21-2019 at 08:47 PM.
#3
If you don't need to replace your fan, just take this part out. I looked in my shop manual and couldn't find the name of this part but it's what plugs into the blower motor. remove it with 3 7/32 screws for better access. Looks like its the blower motor resistor on the auto HVAC. So you are out of luck if you have manual controls. Shop manual has same directions for manual and auto for the resistor which is wrong as they are in different locations and a different part. Rock auto had the picture to confirm that part.
I used a nylon brush used to clean refrigerator coils.
I used a nylon brush used to clean refrigerator coils.
Every now and then I take out the grill below the windshield and clean out underneath it too.
#5
Christine and laxman, I have a 2003 Blazer that is always parked outside under a lot of trees. Here in SC, we have been in a drought and a severely hot summer and the trees are prematurely dropping their leaves. I know my Blazer is packed with pine needles, cedar leaves and other leaves. But I cannot locate that access door with the three bolts to get to them. Am I missing it or did GM not provide that access panel in the 2003 model? I wish this old Blazer did have the filter. But this cleaning should help the A/C continue to blow cold air. I like that photo of the thermometer showing a cold 32*. TIA for your help. Jim
#6
Christine and laxman, I have a 2003 Blazer that is always parked outside under a lot of trees. Here in SC, we have been in a drought and a severely hot summer and the trees are prematurely dropping their leaves. I know my Blazer is packed with pine needles, cedar leaves and other leaves. But I cannot locate that access door with the three bolts to get to them. Am I missing it or did GM not provide that access panel in the 2003 model? I wish this old Blazer did have the filter. But this cleaning should help the A/C continue to blow cold air. I like that photo of the thermometer showing a cold 32*. TIA for your help. Jim
The only option is to access the exterior side of the evaporator by removing the blower fan
Thread
Thread Starter
Forum
Replies
Last Post
Maxboost25psi
General Chat
2
03-04-2013 12:22 PM
Logan
Article Submissions/Discussions
17
03-29-2012 10:59 PM
Jimmy91
2nd Generation S-series (1995-2005) Tech
12
01-16-2012 09:08 AM