What's wrong with my door locks? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

WTB3 · 07-15-2006, 11:15 PM

the locks will work fine when the door is open but when the door is closed the lock will not move up and down, they get blocked or something...
Any one know what might be wrong?

Kantosensei · 07-15-2006, 11:24 PM

On my 72 Blazer. the passenger door does the same thing. I have to push the door in and turn the key or pull on the door handle from the inside and push it down to get it to lock. Check your doors alignment and possibly adjust the striker plate.

71swb4x4 · 07-15-2006, 11:25 PM

Have you put new weatherstripping on lately?
When they are closed try pushing on the door when you turn the key.

WTB3 · 07-15-2006, 11:32 PM

I have actually never replaced the weatherstripping

BobbyK · 07-15-2006, 11:34 PM

It's a door alignment issue.
Loosen the hinge bolts slightly and try adjusting the door.That should solve your problem.

Green Machine · 07-16-2006, 12:02 AM

I think the problem is usually the door latch mechanism is worn. When the main latch gets worn, the roller gear turns too far to let the manual lock engage without pushing in on the door. Maybe new repro latches would fix it, I just push in on the door.

krue · 07-16-2006, 12:04 AM

BTW Welcome to the board from South Mississippi! What kind of ride do you have? Post some pics of it.

WTB3 · 07-16-2006, 12:20 PM

Thanks guys the locks will work if I push the door in but I really have to put a lot of pressure on the door

BobbyK · 07-16-2006, 09:48 PM

I had to push on the door as well before I adjusted the alignment of the door.

Try adjusting the striker plate 1st,that's easier than adjusting at the hinges.If that doesn't work move on to to the hinges.

07-15-2006, 11:15 PM	#1
WTB3 Registered User Join Date: Jun 2006 Location: Pennsylvania Posts: 84	What's wrong with my door locks? the locks will work fine when the door is open but when the door is closed the lock will not move up and down, they get blocked or something... Any one know what might be wrong?

07-15-2006, 11:24 PM	#2
Kantosensei Registered User Join Date: Jun 2005 Location: Japan Posts: 87	Re: What's wrong with my door locks? On my 72 Blazer. the passenger door does the same thing. I have to push the door in and turn the key or pull on the door handle from the inside and push it down to get it to lock. Check your doors alignment and possibly adjust the striker plate.

07-15-2006, 11:25 PM	#3
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: What's wrong with my door locks? Have you put new weatherstripping on lately? When they are closed try pushing on the door when you turn the key. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

07-15-2006, 11:32 PM	#4
WTB3 Registered User Join Date: Jun 2006 Location: Pennsylvania Posts: 84	Re: What's wrong with my door locks? I have actually never replaced the weatherstripping

07-15-2006, 11:34 PM	#5
BobbyK Registered User Join Date: May 2000 Location: Petrolia,Ontario,Canada but working in Port Huron,Mi. Posts: 1,772	Re: What's wrong with my door locks? It's a door alignment issue. Loosen the hinge bolts slightly and try adjusting the door.That should solve your problem. __________________ 71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE

07-16-2006, 12:02 AM	#6
Green Machine Senior Member Join Date: Jul 2004 Location: Estherville, Iowa Posts: 3,371	Re: What's wrong with my door locks? I think the problem is usually the door latch mechanism is worn. When the main latch gets worn, the roller gear turns too far to let the manual lock engage without pushing in on the door. Maybe new repro latches would fix it, I just push in on the door. __________________ 1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0

07-16-2006, 12:04 AM	#7
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	Re: What's wrong with my door locks? BTW Welcome to the board from South Mississippi! What kind of ride do you have? Post some pics of it. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

07-16-2006, 12:20 PM	#8
WTB3 Registered User Join Date: Jun 2006 Location: Pennsylvania Posts: 84	Re: What's wrong with my door locks? Thanks guys the locks will work if I push the door in but I really have to put a lot of pressure on the door

07-16-2006, 09:48 PM	#9
BobbyK Registered User Join Date: May 2000 Location: Petrolia,Ontario,Canada but working in Port Huron,Mi. Posts: 1,772	Re: What's wrong with my door locks? I had to push on the door as well before I adjusted the alignment of the door. Try adjusting the striker plate 1st,that's easier than adjusting at the hinges.If that doesn't work move on to to the hinges. __________________ 71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE Last edited by BobbyK; 07-16-2006 at 09:48 PM.



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