2024 GMC Sierra Key Fob Guide (US): Types, Batteries, Costs & Programming

The 2024 GMC Sierra (US market) typically uses GM proximity “Smart Key” remotes on most trims, and some configurations may still use a traditional remote-head key depending on equipment and fleet/spec builds. Most replacements involve both a remote and an immobilizer transponder function, so cutting and programming are usually required. Consumers generally find that verifying the exact remote style, frequency, and FCC ID from the original fob (or VIN-based parts lookup) prevents the most expensive buying mistakes. If your truck has push-button start, you’re almost certainly shopping for a proximity fob rather than a basic remote.

2 Key Types
$250-$650 Dealer Range
$30-$200 Aftermarket Range

Compatible Key Fob Types

The following key types are typically compatible with the 2024 GMC Sierra. Compatibility varies by trim and options.

Proximity Smart Key fob (Push-Button Start)

A proximity (PEPS) remote that allows the truck to unlock when you approach and start with a push-button when the fob is inside the vehicle. It also contains an emergency mechanical key blade for the door and may support remote start depending on trim and options.

Features

  • Passive entry/lock (touch sensors on door handles, when equipped)
  • Push-button start authorization (immobilizer integrated)
  • Remote start (if equipped) and panic/alarm functions

Buttons

unlocklockremote startpanictailgateremote window down (if equipped)

Battery

CR2032

3-5 years typical lifespan

Dealer OEM $250-$550 Programming included
Aftermarket $60-$200 Programming separate

Programming

🏢 Dealer Required

Programming typically requires a capable scan tool and security access to pair the fob to the truck’s immobilizer/body control system. Some situations (all keys lost, module replacement, theft-deterrent lockout, or certain late-model security implementations) may effectively be dealer-only. If you still have a working fob, adding a spare is often simpler than an all-keys-lost situation.

⚠️ Common Issues

  • Weak CR2032 battery causing intermittent passive entry or “No Remote Detected” messages
  • Aftermarket fob incompatibility due to wrong frequency/FCC ID/board revision
  • Emergency key blade not cut or cut incorrectly, preventing door entry with a dead battery

Remote-head key (Transponder key with integrated buttons)

A traditional metal key with an integrated remote and immobilizer transponder. The key turns in the ignition (where equipped) and the buttons control locks/panic and sometimes remote start depending on configuration.

Features

  • Mechanical ignition operation (where equipped)
  • Immobilizer transponder authentication
  • Remote lock/unlock and panic functions

Buttons

unlocklockpanicremote start (if equipped)

Battery

CR2032

3-5 years typical lifespan

Dealer OEM $200-$450 Programming included
Aftermarket $40-$150 Programming separate

Programming

🏢 Dealer Required

The metal blade must be cut to match your locks, and the transponder/remote portion must be programmed to the immobilizer and receiver. Some trucks do not support on-board programming; consumers generally need a dealer or an automotive locksmith with GM-capable equipment.

⚠️ Common Issues

  • Key starts the truck but remote buttons don’t work (or vice versa) due to partial programming
  • Wrong key blade profile or poor cutting quality
  • Battery contact issues after a drop or case damage

Cost Comparison: Your Options

🏢

Dealership

$250-$650
  • ✓ OEM quality guaranteed
  • ✓ Programming included
  • ✓ Warranty coverage
  • ✗ Higher cost
  • ✗ May require appointment

Best for: Warranty coverage, guaranteed compatibility

🔧

Locksmith

$150-$450
  • ✓ Often same-day service
  • ✓ Mobile options available
  • ✓ Programming included
  • ✓ Often OEM parts
  • △ Verify credentials

Best for: Speed, convenience, moderate savings

📦

Aftermarket Online

$30-$200
  • ✓ Lowest cost option
  • ✓ Wide selection
  • ✗ Programming not included
  • ✗ Compatibility varies
  • △ Check return policy

Best for: DIY-capable owners, budget-conscious

Pricing typically varies by key type (proximity costs more), whether you have at least one working key, and whether cutting is needed. All-keys-lost situations usually cost more due to additional security and labor. Aftermarket fobs can reduce parts cost, but consumers generally find compatibility and returnability are the biggest risks.

🛒 Buyer's Checklist

Before purchasing a replacement key fob for your 2024 GMC Sierra, verify these points:

1 Confirm whether your Sierra has push-button start (proximity) or a keyed ignition; buy the matching key type.
2 Match the FCC ID and button layout to your original fob whenever possible (check the back of the fob and inside the case).
3 Verify frequency/region (US-market) and ensure the listing is for GMC Sierra/GM full-size trucks of the correct generation.
4 Plan for both cutting (emergency key blade or metal key) and programming (immobilizer + remote functions).
5 Buy from a seller with clear return terms for electronic parts, and avoid listings that won’t guarantee compatibility.

⚠️ Common Mistakes to Avoid

✗

Buying a fob that looks identical but has a different FCC ID/board revision and won’t program.

✗

Assuming remote buttons will work after battery replacement when the issue is a damaged fob or desynchronization requiring programming.

✗

Skipping the emergency key blade cut—then being locked out when the fob battery dies.

Related Model Years

Key fob compatibility often spans multiple model years. These years typically share similar key systems:

2022 2023 2024

Frequently Asked Questions

Does a 2024 GMC Sierra use a proximity (smart) key fob?

Most US-market 2024 Sierra trims with push-button start use a proximity smart key fob. Some fleet or specific configurations may use a traditional key style. The easiest confirmation is whether your truck has a START/STOP button and whether the original fob supports passive entry.

What battery does a 2024 GMC Sierra key fob take?

Most 2024 GMC Sierra key fobs typically use a CR2032 coin-cell battery. If your fob case or owner’s manual specifies a different battery, follow that label, but CR2032 is the most common for this generation.

Can I program a 2024 Sierra key fob myself?

On many late-model GM trucks, consumers generally need a dealer or an automotive locksmith with GM-capable programming tools to add or replace fobs, especially for proximity keys. Some scenarios (like all keys lost or certain security lockouts) may require dealer-level access.

Need Help With a Specific Situation?

🚨 Lost All Keys What to do when you've lost your only key ➕ Get a Spare Add a backup key before emergencies 🔋 Dead Battery Replace your key fob battery ⚖️ Compare Options Full comparison of all options

Related GMC Models

2024 Chevrolet Silverado 1500 2024 GMC Sierra 2500HD

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Last updated: 2026-01-04