Blower Motor Housing

Has anyone ever replace the blower motor housing on their Blazer with the engine still in it??? :confused: No im not kidding. It was a piece of cake taking it off at the junk yard because the S10 I took it from had no engine and no passenger fender. :smokin: NOW I have to put it in my blazer :banghead:
I know more or less how to remove the half next to the fender, but the half thats next to the engine thats what I would need help with. Any help would be appreciated. Thanks in advance.

A little background:
Bought my 2000 2DR 2WD Blazer salvaged due to crash, I guess from the impact the blower motor housing cracked, now I need to replace it. Actuall both the housing cove and the housing are in pretty bad shape. I picked up the housing w/blower motor for $15 @ Pick a part the only thing it was missing was the resistor.

http://i386.photobucket.com/albums/oo301/Blazin1_01/CIMG1007.jpg[/IMG]

Remove battery negative cable from the battery. Remove the PCM/VCM. Remove the electrical connectors as necessary. Remove the coolant reservoir. Cut the access cover with a razor blade etc. Remove the blower motor cooling tube. Remove the access cover screws. Disconnect the wiring harness from the blower motor. Remove the blower motor assembly.

At first my problem was that my ac/heat would only work on the HIGH setting,( I have to change the resistor) Now my Blower Motor quit working. I know its not the Motor itself because I did the test that Old Master has on the How-To section. On the thread it says that the Big Orange wire going to the relay should always have power, mine doesn't. How do I fix this? I thought it was the relay for sure, but I tested the wire before the relay and still no power. :banghead:


2000 2DR 2WD Chevy Blazer

If the orange wire shows no voltage- then the upstream component from that is the 30 amp fuse labeled "HVAC fuse 30 amp" in the underhood fuse block- if that is good- then the orange wire must be broken-

Thanks Old Master and brcidd,

After posting the previous entry I did some more testing or what not and I found more damage:banghead:. I dont know why but alot of the wires underneath the fuse box are spliced and taped up :confused: and the box itself is in pretty rough shape so I might have to change it aswell. I followed the Orange wire all the way here and still no power :shakehead. For the time being can I just add a wire with a fuse from above the fuse box bypassing it directly to the Orange wire with out causing any MORE damage? If so where from and what size fuse?

Yes you can bypass the orange wire. It is supposed to have battery voltage at all times, (at the relay). You can run a temporary (fused) wire from the battery to the high blower relay. Locate the fuse as close as possible to the battery connection to protect as much of the circuit as possible.

Hey Old Master I just now finished changing the whole housing w/another blower motor and another resistor, I went to try the ac/heat and now I have 1,2, and 3 but no 4:banghead: What do I look for now???
BTW Removing the and installing the Housing was not pretty but it was a Good challenge for me.:smokin:

http://i386.photobucket.com/albums/oo301/Blazin1_01/008.jpg[/IMG]

Check this thread for diagnosis, the last paragraph covers high speed blower operation:

http://www.automotiveforums.com/vbulletin/showthread.php?t=771630

If you have questions, just ask.

I have to replace my heater motor on my 95 chevy Blazer. Problem is the plastic cover you are supposed to cut is rotten and every time you try to cut it it falls apart. If its not needed can I just break it off and get in there to remove the blower motor and replace the motor. Thks for any help down& out

I have to replace my heater motor on my 95 chevy Blazer. Problem is the plastic cover you are supposed to cut is rotten and every time you try to cut it it falls apart. If its not needed can I just break it off and get in there to remove the blower motor and replace the motor. Thks for any help down& out

From what I've read on this and another forum, the rubbery cover is there to protect the actual Blower Motor Housing from heat, but is not so important. I had to replace the housing itself because as you can see in the first pic it was extremely damaged. In the process I was able to salvage the half of the rubbery cover closest to the engine the other half (covering the Blower Motor) was pretty much gone. If its "rotten" that bad I would just break it off. Try to keep the other half as intact as possible though. This is only my :2cents: