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Compatible with 80+ GM models across Chevrolet, GMC, Cadillac, Buick, Pontiac, Holden, and more. Find yours below:
| Model | Engine | Years |
|---|---|---|
| Avalanche | 5.3L V8 | 2007–2013 |
| Avalanche | 6.0L V8 | 2007–2009 |
| Avalanche | 6.2L V8 | 2010–2013 |
| Blazer | 3.6L V6 | 2019–2022 |
| Camaro | 3.6L V6 | 2016–2024 |
| Camaro | 6.2L V8 | 2010–2024 |
| Caprice PPV | 6.0L V8 | 2011–2017 |
| Colorado | 3.6L V6 | 2015–2020 |
| Corvette | 6.2L V8 | 2014–2019 |
| Equinox Sport | 3.6L V6 | 2008–2009 |
| Express 1500 | 5.3L V8 | 2014 |
| Impala | 3.9L V6 | 2007–2009 |
| Impala | 5.3L V8 | 2006–2009 |
| Malibu | 3.6L V6 | 2008–2012 |
| Malibu | 3.9L V6 | 2006–2009 |
| Monte Carlo | 5.3L V8 | 2006–2007 |
| Silverado 1500 | 4.3L V6 | 2014–2021 |
| Silverado 1500 | 5.3L V8 | 2007–2022 |
| Silverado 1500 | 6.0L V8 | 2007–2013 |
| Silverado 1500 | 6.2L V8 | 2014–2022 |
| Silverado 1500 LD | 5.3L V8 | 2019 |
| SS | 6.2L V8 | 2014–2017 |
| Suburban | 5.3L V8 | 2014–2020 |
| Suburban | 6.2L V8 | 2019–2020 |
| Suburban 1500 | 5.3L V8 | 2007–2014 |
| Suburban 1500 | 6.0L V8 | 2007–2013 |
| Suburban 2500 | 6.0L V8 | 2007–2013 |
| Tahoe | 5.3L V8 | 2007–2020 |
| Tahoe | 6.0L V8 | 2007–2014 |
| Tahoe | 6.2L V8 | 2015–2020 |
| Trailblazer | 5.3L V8 | 2005–2009 |
| Uplander | 3.9L V6 | 2006–2009 |
| Model | Engine | Years |
|---|---|---|
| Acadia | 3.6L V6 | 2007–2008 |
| Canyon | 3.6L V6 | 2015–2020 |
| Envoy | 5.3L V8 | 2005–2009 |
| Sierra 1500 | 4.3L V6 | 2014–2018 |
| Sierra 1500 | 5.3L V8 | 2007–2022 |
| Sierra 1500 | 6.0L V8 | 2007–2013 |
| Sierra 1500 | 6.2L V8 | 2014–2022 |
| Sierra / Denali | 6.2L V8 | 2014–2018 |
| Yukon | 5.3L V8 | 2007–2020 |
| Yukon | 6.0L V8 | 2007–2014 |
| Yukon | 6.2L V8 | 2010–2020 |
| Yukon Denali | 6.2L V8 | 2010–2018 |
| Yukon Denali XL | 6.2L V8 | 2010–2018 |
| Yukon XL | 5.3L V8 | 2015–2020 |
| Yukon XL | 6.0L V8 | 2007–2014 |
| Yukon XL | 6.2L V8 | 2010–2018 |
| Model | Engine | Years |
|---|---|---|
| ATS | 3.6L V6 | 2013–2019 |
| CT6 | 3.6L V6 | 2016–2018 |
| CT6 (Non-Hybrid) | 3.0L V6 | 2016–2018 |
| CTS | 3.6L V6 | 2004–2019 |
| CTS | 6.0L V8 | 2006–2007 |
| CTS | 6.2L V8 | 2009–2019 |
| Escalade / ESV | 6.0/6.2L V8 | 2010–2020 |
| Escalade ESV | 6.2L V8 | 2010–2013 |
| Escalade EXT | 6.2L V8 | 2010–2013 |
| SRX | 3.6L V6 | 2004–2009 |
| STS | 3.6L V6 | 2005–2007 |
| XT5 | 3.6L V6 | 2017–2019 |
| XTS | 3.6L V6 | 2013–2019 |
| Model | Engine | Years |
|---|---|---|
| Enclave | 3.6L V6 | 2008–2020 |
| Envision | 2.5L L4 | 2017–2018 |
| LaCrosse | 3.6L V6 | 2005–2019 |
| LaCrosse | 5.3L V8 | 2008–2009 |
| Rainier | 5.3L V8 | 2005–2007 |
| Regal GS | 3.6L V6 | 2018 |
| Rendezvous | 3.5/3.6L V6 | 2006–2007 |
| Terraza | 3.9L V6 | 2006–2007 |
| Model | Engine | Years |
|---|---|---|
| G6 | 3.6L V6 | 2008–2009 |
| G6 | 3.9L V6 | 2007 |
| G8 | 3.6L V6 | 2008–2009 |
| G8 | 6.0L V8 | 2008–2009 |
| Grand Prix | 3.8L V6 | 2007 |
| Grand Prix | 5.3L V8 | 2005–2008 |
| Montana | 3.9L V6 | 2006–2009 |
| Torrent | 3.6L V6 | 2008–2009 |
| Model | Engine | Years |
|---|---|---|
| VZ Calais SV6 | 3.6L V6 | 2006–2018 |
| Commodore Wagon | 3.6L V6 | 2006–2018 |
| VZ Commodore Sedan | 3.6L V6 | 2006–2018 |
| Crewman / UTE | 3.6L V6 | 2006–2018 |
| 9C1 Police Special | 6.0L V8 | 2015–2018 |
| Rodeo | 3.6L V6 | 2006–2011 |
| Colorado | 3.6L V6 | 2006–2009 |
| VE Commodore Omega | 3.6L V6 | 2006–2009 |
| WL Statesman | 3.6L V6 | 2006–2017 |
| WM Statesman / Caprice | 3.6L V6 | 2006–2017 |
| Model | Engine | Years |
|---|---|---|
| Saab Outlook XE | 3.6L V6 | 2007–2008 |
| Saab Relay | 3.9L V6 | 2006–2008 |
| Saab 9-7X | 5.3L V8 | 2005–2009 |
| Saturn Aura XR | 3.6L V6 | 2007–2009 |
| Saturn VUE XR / Red Line | 3.9L V6 | 2008–2009 |
| Isuzu Aura XR | 3.6L V6 | 2007–2009 |
| Isuzu Ascender | 5.3L V8 | 2005–2009 |
| Suzuki XL2 | 3.6L V6 | 2007–2009 |
GM's AFM system cycles between V8 and V4 mode hundreds of times per drive. Here's what that actually does inside your engine.
Every time your engine switches from V4 back to V8, a hydraulic pressure spike hammers the locking pin inside the lifter bore. Hundreds of thousands of times over 60,000 miles: scored bore wall → spinning lifter → wiped camshaft → $5,000–$13,000 teardown.
CycleLock intercepts the ECU's deactivation command before it reaches the VLOM solenoid. The engine never drops to V4. The pressure spikes never happen. Zero transition events. Zero bore wall damage. Permanently.
No mechanic. No tools. No permanent changes to your truck.
Under your dashboard, driver's side, below the steering column. Every GM vehicle 2007–2022 has one. Takes two seconds to find.
Push it in until it clicks. The blue LED lights up instantly, confirming your engine is now locked in full V8 mode.
Full V8 from that moment forward — every start, every drive, automatically. No settings. No maintenance. No thinking about it again.
Built specifically for GM AFM and DFM systems.
Plug into OBD-II port. No tools ever.
Silverado, Sierra, Tahoe, Yukon & more.
Unplug, zero trace, full factory reset.
Zero reprogramming. Warranty intact.
Active from the very first start.
Cheapest insurance for your engine.
Three ways to deal with AFM. Only one makes sense.
| CycleLock | Full Delete | Do Nothing | |
|---|---|---|---|
| Stops the cycling | ✓ | ✓ | ✕ |
| No tools needed | ✓ | ✕ | ✓ |
| Warranty safe | ✓ | ✕ | ✓ |
| Reversible | ✓ | ✕ | ✓ |
| Cost | $89.95 | $1,500–$3,000 | $0 → $13K |
| Engine protected | ✓ Yes | ✓ Yes | ✕ At Risk |
My buddy's Silverado just went at 94,000 miles — $8,700 repair. Ordered CycleLock the same day. Plugged it in, blue light came on, and I haven't thought about the engine since. Cheapest insurance I've ever bought.
Had the highway shudder for two years. Took it to three mechanics, spent $400 total. Plugged CycleLock in and the shudder was gone on the first drive. Should've done this two years ago.
Was a total skeptic. My buddy made me try it on my truck. Shudder gone, V8 locked, felt like a completely different truck. Ordered one for my Tahoe the same night.
Three months, zero issues. Already bought a second one for my dad's Tahoe. Best money I've ever spent on a truck and I've spent a lot.
Yes. CycleLock is designed for GM V6 and V8 vehicles equipped with both AFM (Active Fuel Management) and DFM (Dynamic Fuel Management). Check the fitment guide above to confirm your specific vehicle and engine.
No. CycleLock involves no flashing or ECU reprogramming of any kind. Simply unplug it before any dealer service visit and there will be no trace left behind — no codes, no footprint, your truck returns to 100% factory settings instantly.
Unplug the device and drive 50–100 miles to allow the ECU to complete its readiness monitors. Complete your emissions test, then reconnect CycleLock afterward. Takes minutes and leaves no record.
Most owners experience little to no change in fuel economy. Many report no noticeable difference in everyday driving. Any minor reduction is a straightforward trade-off against the cost of a $5,000–$13,000 lifter failure.
CycleLock stops the cycling from causing further damage. If you're hearing an active tick, existing lifter wear needs mechanical attention. CycleLock protects the remaining healthy lifters — but cannot reverse damage already done.
30-day full satisfaction guarantee. Plug it in and drive for a week. If you don't feel the difference, send it back for a full refund. No questions asked, no forms to fill out.
Join 11,500+ GM truck owners who stopped the cycling before it stopped their engine.
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