blower motor question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gman · 12-18-2002, 06:54 PM

I've done a search on past posts but I'm still uncertain about the answer to my question. My blower fan starter whistling last night when I turn the fan on. I assume its the blower motor. My question is do I get this out from the engine side of the firewall, passenger side? I'd swear thats what my service manual said when I read it. But reading some of the past posts, I'm confused. Not sure if I need to get under the dash to get it out also. How difficult is this going to be? '72, 350, 4x4, fact ac. I get heat, not all that hot but I think I have a bad thermostat that needs replacing too. Any tips or things to avoid? Whats the proper way to do this? Is it absolutely necessary to remove hinge on pass side? Should I replace heater fan at the same time? If so, is that in same area as blower motor? Do I need to replace core? I think I'll open up the heater and duct work to see what goodies I find in there. Any help appreciated.

72MARIO · 12-18-2002, 06:56 PM

I think you need to remove the hood hing to put a new blower motor in if you have A/C not sure though.

gman · 12-19-2002, 12:25 PM

ttt

red71cheyenne · 12-19-2002, 07:09 PM

You have to remove the fan from the engine side. Its easier if your remove the hood and hinge on that side. Unless your heater core is leaking or its not warming up, I wouldn't mess with it. Good luck, Jeff.

3damnboyz · 12-19-2002, 07:19 PM

remove the hinge, blower cage and motor are connected and will come out togeather. my heater core took a crap a year ago and i went in and redid all that stuff, inside and out! (really, if can just remove the bolts from the hood hinge at the fender you should be able to get the hinge and hood to move out of the way enough to remove the motor, just gonna need a little help holding the hood up while you work on getting the motor out)

gman · 12-23-2002, 11:52 AM

Thanks for the comments everyone. It helps a lot.

mikep · 12-23-2002, 12:06 PM

I did mine last night. Had to remove the hinge. I just propped the hood open with a broomstick and put a block of wood in the rear to support the hood. You'll need a 1/4 inch drive long extension and a universal joint for the socket.

I replaced my fan, the relay, and the resistor inside the airbox. Man, what a difference.

chevy2racr · 12-23-2002, 12:16 PM

You say blower motor and I had my hopes up, I was ready to see a 871 blower in a trcuk :-D

wlee · 12-23-2002, 12:32 PM

That bottom bolt on the blower cage is fun

Most guys just break the cage, but it can be removed with out damage if you're lucky.

12-18-2002, 06:54 PM	#1
gman Registered User Join Date: Nov 2000 Location: Ogden, Utah Posts: 290	blower motor question I've done a search on past posts but I'm still uncertain about the answer to my question. My blower fan starter whistling last night when I turn the fan on. I assume its the blower motor. My question is do I get this out from the engine side of the firewall, passenger side? I'd swear thats what my service manual said when I read it. But reading some of the past posts, I'm confused. Not sure if I need to get under the dash to get it out also. How difficult is this going to be? '72, 350, 4x4, fact ac. I get heat, not all that hot but I think I have a bad thermostat that needs replacing too. Any tips or things to avoid? Whats the proper way to do this? Is it absolutely necessary to remove hinge on pass side? Should I replace heater fan at the same time? If so, is that in same area as blower motor? Do I need to replace core? I think I'll open up the heater and duct work to see what goodies I find in there. Any help appreciated. __________________ 72 Chevy SWB Custom Deluxe K10, 350/SM465, PS, PB, Fact. Air 2000 Harley...Wide Glide

12-18-2002, 06:56 PM	#2
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,052	I think you need to remove the hood hing to put a new blower motor in if you have A/C not sure though. __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD

12-19-2002, 12:25 PM	#3
gman Registered User Join Date: Nov 2000 Location: Ogden, Utah Posts: 290	ttt __________________ 72 Chevy SWB Custom Deluxe K10, 350/SM465, PS, PB, Fact. Air 2000 Harley...Wide Glide

12-19-2002, 07:09 PM	#4
red71cheyenne Back in the sticks Join Date: Jan 2001 Location: Fordland, MO Posts: 3,188	You have to remove the fan from the engine side. Its easier if your remove the hood and hinge on that side. Unless your heater core is leaking or its not warming up, I wouldn't mess with it. Good luck, Jeff. __________________ 1971 Cheyenne C-10 w/700R4 and Tuned Port Injection 1969 K5 Blazer w/Tuned Port 2010 2SS/RS Flaming Orange Camaro 2011 K1500 Suburban 2014 K1500 Pickup 2008 Nissan Altima? The wifes' hoopty

12-19-2002, 07:19 PM	#5
3damnboyz Registered User Join Date: Dec 2002 Location: east texas Posts: 42	remove the hinge, blower cage and motor are connected and will come out togeather. my heater core took a crap a year ago and i went in and redid all that stuff, inside and out! (really, if can just remove the bolts from the hood hinge at the fender you should be able to get the hinge and hood to move out of the way enough to remove the motor, just gonna need a little help holding the hood up while you work on getting the motor out) __________________ 72 short wide 55 stepside- 2nd generation "come on honey, we need more old trucks to fix up for the boys to drive, they will be driving before ya know it!"

12-23-2002, 11:52 AM	#6
gman Registered User Join Date: Nov 2000 Location: Ogden, Utah Posts: 290	Thanks for the comments everyone. It helps a lot. __________________ 72 Chevy SWB Custom Deluxe K10, 350/SM465, PS, PB, Fact. Air 2000 Harley...Wide Glide

12-23-2002, 12:06 PM	#7
mikep Used to have a truck Join Date: May 2002 Location: port orchard WA Posts: 1,552	I did mine last night. Had to remove the hinge. I just propped the hood open with a broomstick and put a block of wood in the rear to support the hood. You'll need a 1/4 inch drive long extension and a universal joint for the socket. I replaced my fan, the relay, and the resistor inside the airbox. Man, what a difference. __________________ No truck :-(

12-23-2002, 12:16 PM	#8
chevy2racr So Many Ideas, So Little Money Join Date: Sep 2001 Location: Marshalltown, IA Posts: 1,610	You say blower motor and I had my hopes up, I was ready to see a 871 blower in a trcuk :-D __________________ 72 Blazer 3/4 ton running gear 4.10s NP205/TH350 350 4in lift half doors 71 C10 with 454 99 S-10 5.1L SBC 700R4 09 Malibu Marshalltown, Iowa

12-23-2002, 12:32 PM	#9
wlee Just an Old Mr Goodwrench Join Date: Feb 2002 Location: Green Ridge, MO USA Posts: 259	That bottom bolt on the blower cage is fun Most guys just break the cage, but it can be removed with out damage if you're lucky. __________________ 1969 CST 20 Longhorn 1970 CST 20 Fleetside 1991 Jaguar Sovereign 1992 Mazda Miata



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