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#1 |
Registered User
![]() Join Date: May 2007
Location: Carlsbad,NM
Posts: 99
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85 Gmc no crank..possible ignition switch
Hey guys...I just went to fire up my 85 and no crank. I think it has something to do with the ignition switch because the key actually turns alot more than it should. Any ideas?
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#2 |
Registered User
Join Date: Jun 2009
Location: Oroville, CA
Posts: 4,827
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Re: 85 Gmc no crank..possible ignition switch
There is a rod going along the side of the column that could have come apart. My inlaws used pliers on the rod to start their 87 GMC for years.
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#3 |
Registered User
Join Date: Sep 2011
Location: Chesterfield, Va.
Posts: 339
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Re: 85 Gmc no crank..possible ignition switch
This will sound weird, but it can be a damaged rack & sector. The Ignition rod is activated by a sector gear at the end of where the key cylinder hooks in and enguages a rack that has the rod attatched to it. Lay your hand on the ignition switch on top the column, turn the key and see if you can feel movement in the switch. If you dont, then disassembly of the upper end of the column will access the rack & sector part. If you feel movement, then I'd go after the switch. The rack is made from a " cheezy" pot metal material and can crack & break. The sector is plastic. see link below, part # 24
http://www.lmctruck.com/icatalog/cc/full.aspx?Page=136 Last edited by Weasel Diesel; 03-09-2012 at 09:35 AM. |
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#4 |
Registered User
Join Date: Feb 2012
Location: Austin, Arkansas
Posts: 248
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Re: 85 Gmc no crank..possible ignition switch
I agree with Weasel Diesel.This is a common problem with these columns.It can break at any time,and usually,when the switch is turned OFF,it "snags",and breaks the rack.This rack also locks the steering wheel,so if you turn the key,and it unlocks the wheel,it may have broken at the point where the rod attatches,rather than,as mine did,in the middle of the rack.
__________________
Always expect the unexpected,....but don't expect the unexpected to be the unexpected you expect ! I'm busier than a one-legged cat,in a sandbox! Veteran..and proud ! I can't fix what ain't broke....you want I should break it? |
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#5 |
Registered User
![]() Join Date: May 2007
Location: Carlsbad,NM
Posts: 99
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Re: 85 Gmc no crank..possible ignition switch
Thanks guys. Im going to tackle it this weekend. Now I know atleast where to start..thanks!
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#6 | ||
Registered User
Join Date: Mar 2012
Location: The 602
Posts: 1
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Re: 85 Gmc no crank..possible ignition switch
Hey guys, first post. I'm glad I found this thread, seems like i'm having almost the same problem as silverado84355
Quote:
I recently decided to get my '85 C10 back on the road. Fresh gas, fresh battery, crank....nothing. I broke mine in the middle, and it is indeed made of "cheezy" pot metal. Do you know if dealerships still carry these so I can see it firsthand? Would I be able to replace this piece without having to remove the rod from the ignition switch or are they permanently attached? It's buried down there... Quote:
Would it be worth replacing this rack, or should I just wire in a new switch to bypass the current ignition switch or get a whole new/used column? Thanks for any info. |
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#7 |
Registered User
![]() Join Date: May 2007
Location: Carlsbad,NM
Posts: 99
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Re: 85 Gmc no crank..possible ignition switch
Fixed it! Broken rack and sector gear. It was only $10 bucks at autozone. Thanks everyone for pointing me in the right direction!
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