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Easy Chevrolet Silverado and GMC Sierra Tailgate Lock Install

An easy way to add some security to the bed of your tow vehicle

Apr 20, 2015
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Let’s be honest, GM is run by a bunch of cheap bean counters. Don’t believe me? Then explain why even a highly optioned truck doesn’t come with something as simple as a tailgate lock? Aside from keeping scumbag thieves from stealing your tailgate it’s also a great way to secure stuff in the bed of your truck. After all, when we haul our Chevy to the track for some racing, we often bring along a huge assortment of parts, tools, and frosty cold beverages. But it became a pain when we parked for the night at a hotel. We had a bed cover, but security was zero since thieves could open the tailgate. Well, the fix is easy and not even very expensive. GM sells a lock upgrade for all Chevrolet and GMC (Silverado/Sierra) trucks from 2000 through 2006. The part (PN 19211265) sells for less than $50 and takes a whopping 15 casual minutes to install. Best of all, the contents of our truck bed are now a whole lot safer. Follow along as we detail how to do this simple upgrade to your tow rig.

Tail Gate Lock Install Stock Latch 2/13

01. Behold the stock tailgate latch on a 2000 Chevrolet Silverado 1500. It’s the same latch found on most GM trucks from 2000 through 2006.

Tail Gate Lock Install 19211265 3/13

02. The lock from GM (PN 19211265) is a pretty simple deal and came with all the necessary hardware and an instruction sheet.

Tail Gate Lock Install Parts 4/13

03. Three 13-mm bolts on the back of the tailgate secure the stock, non-locking handle.

Tail Gate Lock Install Included Fasteners 5/13

04. The lowest bolt of the three is replaced by either an 11mm bolt or a tamper-proof flat-head style fastener. The bolt is for use when you have a bed cover and the tamper-proof one is good for when someone can reach into your truck bed.

13mm Bolt 6/13

05. First up was removing the lower 13mm bolt.

Tail Gate Lock Install Loosen 7/13

06. The other two 13mm bolts were loosened, but not removed.

Tail Gate Lock Install 19211265 8/13

07. The lock works by interfering with the function of the stock latch. It’s a pretty simple and effective design. It won’t keep out a determined thief, but it will stop the causal one that is just looking for a quick score (and who doesn’t want to make a lot of noise).

Tail Gate Lock Install Installing Lock 9/13

08. With the stock latch handle loose, slide the lock up behind the handle.

Install Inserting 11mm Bolt 10/13

09. The new 11mm stainless fastener (and washer) goes through the tailgate and into the threaded hole in the new GM lock bracket.

Tail Gate Lock Install Tighten 11/13

10. You should have one 13mm GM fastener and one stainless fastener (in our case the tamper-proof one) left over.

Left Over Parts Keys 12/13

11. Once in all three fasteners are snugged up you can put this into the done category.

Chevrolet Silverado And Gmc Sierra Tail Gate Lock Install 19211265 Installed 13/13

12. The kit came with two keys, and we should now be able to sleep easier knowing our car parts and tools are a lot safer.


General Motors



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