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AFM/DFM disablers for the Silverado 1500 & Sierra 1500 2007–2013

Any classic plug-in disabler is built for this. Pick on battery draw, switch and reviews.

By KeepOnEight editorial teamUpdated We earn from qualifying Amazon purchases · how we review

Short answer

For most Silverado & Sierra2007–2013 owners: Range Technology RA003B AFM/DFM Disabler, or BOOST AFM & DFM Disabler on a budget: Max Cylinder AFM/DFM Disabler. Check your engine and transmission in the table first.

Engines, years and what they have

EngineGM codeYearsTransmissionSystem
5.3L V8LY5 · LMG · LC9 · LH62007–20136- or 8-speedAFM
6.0L V8 HybridLZ12009–20136- or 8-speedAFM
4.8L V8LY2 · L202007–2013—None
6.0L V8 (non-hybrid) (to confirm)LY6 · L962007–2013—None
6.2L V8 (to confirm)L9H2009–2013—None
4.3L V6LU32007–2013—None
  • AFM on these trucks switches between V8 and V4 (cylinders 1, 7, 6 and 4 go quiet).
  • The 2007 "Classic" is the carry-over older body: no AFM, nothing to disable.
  • 5.3L V8: Most 5.3L trucks of this body have AFM. The 2007 "Classic" (old body) does not.

Disablers sold for this generation

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2005–2020 · not 10-speed

BOOST AFM & DFM Disabler

4.6★ (1.2K ratings) · 1K+ bought last month

0.71 mA engine off No switch Start/stop stays

Our favorite classic disabler on paper: well rated, low stated draw, clear fitment list.

About $149
on Oct 27, 2026 Check on Amazon →
2007–2022.0 · not 10-speed

Max Cylinder AFM/DFM Disabler

4.6★ (682 ratings) · 900+ bought last month

Draw not stated No switch Kills start/stop

Worth a look if you want start/stop gone on a pre-2022 truck, but the reviews are mixed.

About $180
on Oct 27, 2026 Check on Amazon →
2007–2021 · not 10-speed

ROPODE AFM/DFM Disabler

4.3★ (2.9K ratings) · 4K+ bought last month

Draw not stated No switch Start/stop stays

The volume pick. Fine for a pre-2019 truck if you accept clone-level quality control.

About $68
on Oct 27, 2026 Check on Amazon →
2007–2021 · 10-speed disputed

OBDCAR AFM/DFM Disabler

4.3★ (2.5K ratings) · 1K+ bought last month

Draw not stated No switch Start/stop stays

Popular, but its listing says the least about what it fits.

About $67
on Oct 27, 2026 Check on Amazon →

32 disablers in total are sold for at least one engine of this generation. See them all in the comparison table, or add your vehicle for an exact answer.

Limits & caveats

  • California: none of the disablers listed for this vehicle has a CARB Executive Order, so they are not legal on California-registered vehicles. States with OBD-based inspections may also flag a vehicle while one is plugged in.
  • Plug-in disablers draw a little current with the engine off. If the vehicle will sit for a week or more, unplug it or use a model with a switch.

Where it plugs in

Under the dash, left of the steering column, above the driver's knee. Plug the disabler in with the engine off, then start the vehicle: most units show a light once they're talking to the engine computer.

Questions owners ask

Does the Silverado & Sierra 2007–2013 have AFM or DFM?

5.3L V8 (LY5 · LMG · LC9 · LH6, 2007–2013): AFM. 6.0L V8 Hybrid (LZ1, 2009–2013): AFM. 4.8L V8: none. 6.0L V8 (non-hybrid): none. 6.2L V8: none. 4.3L V6: none.

Where is the OBD-II port?

Under the dash, left of the steering column, above the driver's knee.

Do I need the expensive Range unit?

Not for compatibility: classic clones are sold for the same vehicles. You pay for the brand, support and, according to some owners, fewer false warning lights.

Sources: GM service bulletin 20-NA-038 (engines with AFM/DFM hardware), manufacturer fitment pages (Range Technology, BOOST), Amazon listings and owner reviews, owner forums. Checked October 27, 2026. How we review.