ORIGINAL LISHI - B111 Z-Keyway GM / (Warded) 2-in-1 Pick & Decoder / AG (OLS-B111-AG)
ORIGINAL LISHI - B111 Z-Keyway GM / (Warded) 2-in-1 Pick & Decoder / AG (OLS-B111-AG)
ORIGINAL LISHI - B111 Z-Keyway GM / (Warded) 2-in-1 Pick & Decoder / AG (OLS-B111-AG)
ORIGINAL LISHI - B111 Z-Keyway GM / (Warded) 2-in-1 Pick & Decoder / AG (OLS-B111-AG)
Manufacturer: LISHI

ORIGINAL LISHI - B111 Z-Keyway GM / (Warded) 2-in-1 Pick & Decoder / AG (OLS-B111-AG)

$120.00 In Stock Sold out




  • Description
  • Compatible With

Product SKU: OLS-B111-AG
Manufacturer: LISHI 

TOOL TYPE: Warded 2-in-1 Pick and Decoder Tool
Cross Reference: GM-37W, B106,
KEYWAY: B111 Z-Keyway
# OF CUTS: --
CAPABILITY: For Door and Trunk
Warded or non-warded lock?
If you insert MZ31/X249 key into the GM Z Keyway, and if it goes in then it’s a Non-Warded Keyway. If MZ31/X249 key does not go in the hole, the lock is Warded.
Warded locks usually have wafers in positions 3-10; non-warded locks wafers positions 4-10


Compatible with the following:

Year Make Model
2005-2009 Buick Allure
2007-2017 Buick Enclave
2005-2009 Buick Lacrosse
2006-2011 Buick Lucerne
2005-2007 Buick Signia
2007-2008 Buick Terraza
2008-2013 Cadillac CTS
2006-2011 Cadillac DTS
2007-2014 Cadillac Escalade
2004-2009 Cadillac SRX
2004-2011 Cadillac STS
2007-2013 Chevrolet Avalanche
2005-2010 Chevrolet Cobalt
2005-2013 Chevrolet Corvette
2007-2009 Chevrolet Equinox
2006-2011 Chevrolet HHR
2006-2013 Chevrolet Impala
2004-2013 Chevrolet Malibu
2006-2007 Chevrolet Monte Carlo
2007-2013 Chevrolet Silverado
2007-2014 Chevrolet Suburban
2007-2014 Chevrolet Tahoe
2009-2017 Chevrolet Traverse
2007-2016 GMC Acadia
2008-2014 GMC Savana
2007-2013 GMC Sierra
2007-2014 GMC Yukon
2008-2009 Hummer H2
2007-2010 Pontiac G5
2005-2010 Pontiac G6
2004-2008 Pontiac Grand Prix
2006-2010 Pontiac Pursuit
2006-2009 Pontiac Solstice
2007-2009 Pontiac Torrent
2006-2009 Saab Saab 9-7
2007-2010 Suzuki Aura
2003-2007 Suzuki Ion
2007-2010 Suzuki Outlook
2007-2010 Suzuki Sky
2007-2009 Suzuki XL-7


Please Note: this tool comes with a verification label attached on the back of each tool. That will guarantee that you are getting tools that offer only the highest level of quality. Verifying your tools is the only way to ensure that you are getting TRUE Original Lishi Tools quality and design.

Location: PAC 39

Solving the GM "Z" Keyway Mystery - A Lishi Guide

By: Chris Lira


B111 for warded applications (referring to the the lock’s keyway fitting tight to the shape of the key).
GM37 for non-warded applications (open keyway).

Two things to keep in mind before trying to determine warded/unwarded:
Truck/Van/Suv platforms (Silverado/Express/Equinox) are always non-warded.  
The changeover years are usually somewhere between 08-09.

From here, there's a few ways to tell what kind of lock you’re working on:

  1. Try to insert your GM37 into the lock. Doesn't fit? Probably warded.
  2. Insert your B111 into the lock. Are you feeling resistance in 3-10 or 4-10? If there's no springiness in position 3, it's probably NON-warded.
  3. Try to insert a Mazda 10 cut (MZ31) key. If it goes in, (albeit often tightly) it's NON-warded.

IF YOUR LOCK IS NON-WARDED, you are on easy street. The tool is robust. The picking is easy. The reads are clean.

IF YOUR LOCK IS WARDED, you're probably going to have a bad time until you get a good feel for the tool.

The thing to really keep in mind with the warded tool is that the lifter arms are very thin to get around the warding, and this makes them very susceptible to warping under pressure.


If you put too much turning pressure on the tool while trying to pick, you're going to put undue pressure on the wafers and make them much harder to move.

If you use too much pressure on your lifter arms, in both the picking and decoding stage, they will warp. It's really not much of a big deal because they will spring back-- unless you go full kung fu grip on them.

In picking, keep in mind that you can push on them hard enough to simulate what you think is wafer slap and think that your wafer is already picked when it isn't.

In decoding, keep in mind that you just need to bottom out the spring to kiss the end of travel and undue pressure will cause the arm deformation and result in your read being too shallow.

It’s worth noting that the warded locks are also often sloppy reads because the tool doesn't stay very well self-centered in the lock.

In this case, you have a few options.

  1. Try to keep the lock centered manually. Decode where it reads consistently enough to get an on-the-line reading. Sometimes you may have to take multiple reads.
  2. Use half-cuts in your progression software/app of choice. It's been my experience that even if you enter mostly or all half-cuts into your fill program, the series isn't obscenely large and won't usually result in a long progression chain.
  3. Combination of manual centering and half-cuts.

I usually let the lock guide me as to which to use.

Hopefully this is helpful.

Additional notes:

It is worth noting that there are some Cadillac sidebar Z-key applications where the 2-in-1 tools will not work. For the 2008+ CTS, the B107 Direct reader is an option.

There are some older prox-equipped models where the emergency key doesn't unlock the door, but manually operates the latch. These have a VERY heavy springback on them and it's not advisable to use the tool to fully turn the lock over.

Recently Viewed