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#1 |
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Registered User
Join Date: Jan 2019
Location: St Peters, MO
Posts: 527
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Tailgate Latch Fix
Yesterday I picked up some seed and top soil in the '67. After unloading, my latch was sprung and would not close. Today I removed the latch, banged on it a bit and got it reinstalled. I tried an old-school impact driver & mallet, but the old screws didn't budge, so I drilled out the screws starting with 1/8" and stepping up to 1/4".
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1967 C20, 350 SBC w/Comp roller cam, 700R4 w/3.42 posi, PS, 4-wheel PDB, Old Air AC & GM Tilt column. |
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#2 |
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Registered User
Join Date: Jan 2019
Location: St Peters, MO
Posts: 527
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Re: Tailgate Latch Fix
Here's a pic with the latch removed showing the actuating rods, and another showing how one of the plates was sprung and needed to be bent back in place.
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1967 C20, 350 SBC w/Comp roller cam, 700R4 w/3.42 posi, PS, 4-wheel PDB, Old Air AC & GM Tilt column. |
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#3 |
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Registered User
Join Date: Jan 2019
Location: St Peters, MO
Posts: 527
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Re: Tailgate Latch Fix
After tweaking and lubricating the latch, bending the ends of the rods, time to reinstall. Here's a pic with the rods in the backing plate, and another with rubber hose put on the ends of the rods.
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1967 C20, 350 SBC w/Comp roller cam, 700R4 w/3.42 posi, PS, 4-wheel PDB, Old Air AC & GM Tilt column. |
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#4 |
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Registered User
Join Date: Jan 2019
Location: St Peters, MO
Posts: 527
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Re: Tailgate Latch Fix
And reinstalled. The previous owner likely damaged the latch given the cracks in the tailgate above the latch. Temporary 5/16" hex bolts used until I can get some round Phillips truss or hex cap bolts in 3/4" length. I was glad to reuse the latch since it has such a wonderful finish on it.
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1967 C20, 350 SBC w/Comp roller cam, 700R4 w/3.42 posi, PS, 4-wheel PDB, Old Air AC & GM Tilt column. Last edited by tim_mc; 06-22-2025 at 02:34 PM. |
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#5 |
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Registered User
Join Date: Jan 2019
Location: St Peters, MO
Posts: 527
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Re: Tailgate Latch Fix
Picked up some stainless 5/16-18 x 3/4" button head socket cap screws at the local Farm & Home Supply. Added a dab of anti-seize and tightened with 3/16" Allen wrench. These will be a lot easier to remove in the future, and no protruding bolt heads to grab or scratch bags or lumber.
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1967 C20, 350 SBC w/Comp roller cam, 700R4 w/3.42 posi, PS, 4-wheel PDB, Old Air AC & GM Tilt column. Last edited by tim_mc; 06-22-2025 at 07:54 PM. |
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#6 |
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Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 8,118
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Re: Tailgate Latch Fix
I like the Allen Screws.
A couple of years ago the tailgate on my '71 GMC Jimmy K/1500 got jammed. Could not open the tailgate to save my life. Latch was held in by phillips panhead screws that took at least a #3. I bought a hammer driven impact device from Harbor Freight. For a couple of weeks, to prep in advance, I sprayed down each screw daily. I posted about it, on this site. It got quite a following. Finally one Friday, I figured it was time. I had to clear stuff out of the back of the Jimmy to hit that impactor on those three #3 screws as with the tailgate up, the fasteners were in a vertical position. Just before whacking it, I tried the latch manually. And it opened up like normal, all that PB Blaster and WD-40 had done the trick.
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Every 25 years I like to rebuild that 292, whether it needs it or not. Last edited by '68OrangeSunshine; 06-22-2025 at 05:56 PM. |
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#7 |
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Registered User
Join Date: Dec 2019
Location: LC, Tn
Posts: 44
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Re: Tailgate Latch Fix
Timely post for me. I had to use a screwdriver to help the handle work the mechanism to release my tailgate. The truck is a roller at this point and this is one of those projects on the list of things to look at. Thanks for the post. I'll see if I can get the same results as you.
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1970 Corvette 1970 C10 CST |
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#8 |
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All stock and staying that way
![]() ![]() Join Date: Jul 2003
Location: Elkland, PA
Posts: 2,501
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For those who want exact OEM replacement screws:
![]() AMK Products # G-24012
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1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Frame off restored 1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... ![]() 2017 Sierra 1500 SLT 4WD, Black, 51k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 71k miles, 3.6, 8L45, 3.23 LS, 18" wheels |
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#9 | |
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Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,266
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Re: Tailgate Latch Fix
Quote:
I do a lot of work for mechanically reclined friends and relatives. When I apply anti-seize while they are watching I use that line. I guess what I'm trying to say is PLEASE use anti-seize. You won't regret it, except for when you apply it because it gets everywhere fast.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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#10 | |
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Senior Member
![]() Join Date: Jan 2012
Location: Texan, back in TX
Posts: 2,209
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Re: Tailgate Latch Fix
Quote:
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#11 |
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Senior Member
![]() Join Date: Nov 2018
Location: Waterford California
Posts: 2,893
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Re: Tailgate Latch Fix
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#12 | |
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Registered User
Join Date: Jan 2019
Location: St Peters, MO
Posts: 527
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Re: Tailgate Latch Fix
Quote:
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1967 C20, 350 SBC w/Comp roller cam, 700R4 w/3.42 posi, PS, 4-wheel PDB, Old Air AC & GM Tilt column. |
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#13 | |
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Registered User
Join Date: Jan 2019
Location: St Peters, MO
Posts: 527
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Re: Tailgate Latch Fix
Quote:
That stuff smears real good. Years ago Dad had a super big can of anti-seize - likely from the cement plant motor pool where he worked. I'm sure it was past it's expiration date and he saved it from the trashcan.
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1967 C20, 350 SBC w/Comp roller cam, 700R4 w/3.42 posi, PS, 4-wheel PDB, Old Air AC & GM Tilt column. |
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#14 |
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Senior Member
![]() Join Date: Feb 2022
Location: Ca
Posts: 1,026
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Re: Tailgate Latch Fix
As dad would say, "you can't call that stuff on the telephone without getting it all over you."
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