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2024 GMC Yukon Key Fob Not Working: Quick Fixes, Costs, and Next Steps

If your 2024 GMC Yukon key fob suddenly won’t lock/unlock or won’t let the SUV start, the cause is usually a weak fob battery, signal interference, or a fob that needs re-sync/programming. The good news: you can often regain access and start the vehicle using built-in backup methods while you troubleshoot.

Understanding Your Situation

A non-working key fob typically means the Yukon isn’t receiving a usable signal from the fob (dead/weak battery, damaged fob, interference), or the vehicle is preventing operation due to a security/receiver issue. Sometimes the fob will still start the vehicle via the emergency start procedure even if remote buttons don’t work.

🚀 Immediate Steps to Take

  1. Try your spare key fob (if available). If the spare works, the problem is likely the original fob (battery or damage).
  2. Replace the fob battery with a new, name-brand coin cell of the correct type (commonly CR2032 on many GM fobs—verify your fob’s marking/manual). Ensure the battery is installed with correct polarity and the contacts are clean.
  3. If the Yukon won’t start, use the backup start method: hold the fob against the designated backup reader location (often in/near the center console storage area on many GM push-button models) and press the brake and START/STOP. If unsure, check the owner’s manual for the exact spot.

Your Options

Replace the key fob battery (DIY)

Cost: $3-$15 Time: Same day

Open the fob case, install a new coin-cell battery, and confirm lock/unlock and remote start (if equipped) work. This resolves most sudden failures.

âś“ Pros:
  • Fast and inexpensive
  • No programming needed in most cases
âś— Cons:
  • Wrong battery type/cheap batteries can fail quickly
  • Doesn’t help if the fob is physically damaged or the vehicle receiver has an issue

Use the mechanical key + backup start procedure

Cost: $0 Time: Same day

Use the hidden mechanical key to unlock the driver door if the remote won’t unlock. Then use the vehicle’s passive/backup reader method to start even when the fob battery is weak.

âś“ Pros:
  • Gets you back on the road immediately
  • No parts required
âś— Cons:
  • Not a permanent fix if the fob is failing
  • May trigger an alarm when using the mechanical key on some vehicles

Replace a damaged key fob shell or entire fob (then program)

Cost: $180-$450 Time: Same day / 1-3 days

If buttons are unresponsive, the case is cracked, or the fob got wet, you may need a replacement fob (or shell with electronics transferred). Most replacements require programming to the Yukon.

âś“ Pros:
  • Restores full function and reliability
  • New fob typically includes a fresh battery and improved button feel
âś— Cons:
  • Requires correct OEM-compatible fob and programming
  • Aftermarket fobs vary in quality

Dealer diagnostic and programming

Cost: $200-$600 Time: Same day / 1-3 days

A GMC dealer can test the fob, verify the correct part number, check for vehicle-side issues (receiver, antenna module), and program keys/fobs to the vehicle.

âś“ Pros:
  • Highest compatibility and correct programming
  • Can diagnose vehicle-side faults (not just the fob)
âś— Cons:
  • Usually the most expensive route
  • May require appointment and proof of ownership

Automotive locksmith (mobile key service)

Cost: $150-$400 Time: Same day

A qualified automotive locksmith can supply and program a compatible fob, often at your location, and may be able to cut/replace the emergency key blade if needed.

âś“ Pros:
  • Often faster and less expensive than a dealer
  • Mobile service is convenient if you’re stranded
âś— Cons:
  • Quality depends on the provider and parts used
  • Some situations still require dealer-level tools or parts

⚠️ What to Avoid

✕ Don’t keep pressing the buttons repeatedly for long periods—this can drain a weak battery faster and may temporarily lock out functions if the vehicle is seeing constant signals.

✕ Don’t use the wrong coin-cell battery type or install it upside down; also avoid no-name batteries that may be weak out of the package.

✕ Don’t attempt improvised “reprogramming” steps from random videos—incorrect procedures can waste time and may require a reset or professional programming afterward.

⚠️ Common Mistakes to Avoid

  • Assuming key is broken
  • Not checking battery first
  • Calling tow truck immediately
  • Replacing when reprogramming needed

Frequently Asked Questions

My 2024 GMC Yukon key fob won’t unlock the doors—how do I get in?

Use the mechanical key inside the fob to unlock the driver door. On many vehicles, turning the key may trigger the alarm; once inside, start the vehicle using the backup start method (hold the fob at the designated reader location and press START).

Why does my key fob work sometimes but not others?

Intermittent operation is commonly caused by a weak battery, interference (parking garages, airports, large radio equipment), or a failing fob (worn buttons, internal damage, moisture). If a fresh battery doesn’t fix it, have the fob and vehicle receiver checked.

Will a dead key fob battery prevent my Yukon from starting?

Often you can still start using the backup reader method even with a weak/dead fob battery, but a completely failed fob or vehicle-side issue can prevent starting. If the backup start method doesn’t work, you may need professional help.

Do I need programming after replacing the battery?

Usually no. Battery replacement should not erase programming. If the fob still doesn’t work after a correct new battery, the fob may be damaged or the vehicle may need diagnostics/programming.

⏱️ Urgency Note: If the key fob issue prevents starting and you’re stuck in an unsafe location, prioritize moving to a safe area and call roadside assistance or a mobile locksmith. If you notice repeated “No Remote Detected” warnings or the vehicle won’t recognize either fob, get it diagnosed soon to avoid being stranded.

Related Information

Need Detailed Information?

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Last updated: 2026-01-04