B3060 on 2021-2025 Chevrolet Corvette: No Start Causes and Fixes

What's Unique About the 2021-2025 Chevrolet CORVETTE

The C8 Corvette, like most modern vehicles, relies heavily on complex radio frequency (RF) communication for its keyless entry and start system, operating at 315 MHz or 433 MHz. This makes it particularly susceptible to RF interference, which is the leading cause of intermittent B3060 codes. GM has issued a broad Technical Service Bulletin (PIC5650M) that applies to the Corvette and many other models, highlighting how aftermarket electronics, other key fobs on the same keychain, and even certain phone chargers can disrupt the signal and trigger this code. Unlike older cars where a bad key was the primary culprit, on the C8, external factors are often the first thing to investigate.

Diagnostic Flowchart

Tap your situation to follow the diagnostic path that matches what you're seeing on this vehicle.

Symptoms You May Notice

• Intermittent no crank, no start condition.
• Engine starts and immediately stalls.
• Security indicator light is illuminated on the dashboard.
• "No Fob Detected" or "No Remote Key Was Detected Place Key In Key Pocket Then Start Your Vehicle" message on the driver information center.
• Keyless entry system works poorly or not at all.
• Vehicle will start only if the key fob is placed in the dedicated fob pocket/holder, which is located in the center console cupholder.
• Car gets stuck in accessory mode and will not shut off.

Most Likely Causes

1. Radio Frequency Interference (RFI) 🔴 High Probability The vehicle's keyless system operates on sensitive 315 MHz, 433 MHz, and 125 kHz frequencies that can be easily 'jammed' by other electronic devices.
   How to confirm: Remove all other keys, fobs, access cards, and aftermarket electronics from the vehicle and from the Corvette's key ring. TSB PIC5650 specifically lists toll passes, building access cards, aftermarket LED lights, and certain USB phone chargers as known culprits. If the car starts consistently with these items removed, RFI is the cause.
   Typical fix: Isolate and remove the source of the interference. Keep the Corvette key fob separate from other fobs, toll passes, and access cards. Advise customers to avoid cheap, unshielded USB chargers or aftermarket LED bulbs.
   Est. part cost: $0
2. Weak or Dead Key Fob Battery 🟡 Medium Probability → Shop Vehicle Battery A weak battery can produce an inconsistent or corrupted signal that the car's security system may not recognize properly. The fob uses a common CR2450 battery.
   How to confirm: Try using the vehicle's second key fob. If the second fob works reliably, the first fob's battery is the likely issue. Alternatively, place the suspect fob in the designated fob holder in the center console cupholder; this allows the car to read the fob via induction even with a very weak battery.
   Typical fix: Replace the CR2450 battery in the key fob. 🎬 Watch: Easy DIY C8 key fob battery replacement guide.
   Est. part cost: $5-$10
3. Faulty Key Fob ⚪ Low Probability → Shop Keyless Entry Transmitter Internal electronics of the key fob can fail from being dropped or from moisture damage, causing it to transmit an incorrect code or no code at all.
   How to confirm: If a new battery doesn't solve the issue and the second key fob works perfectly, the first fob is likely faulty. A dealer can test the fob's signal output using a tool like the J-43241 Keyless Entry Tester.
   Typical fix: Replace the key fob and have it programmed to the vehicle by a dealer or qualified locksmith. The OEM part number can vary, but examples include 13545167, 13536982, and 13547762.
   Est. part cost: $150-$400
4. Body Control Module (BCM) or Theft Deterrent Module (TDM) Issue ⚪ Low Probability → Shop Anti-Theft Control Module Complex software can occasionally experience glitches. Some C8 owners have reported random electronic issues that are resolved by a system reset or a software re-flash from the dealer.
   How to confirm: This requires a professional diagnosis with a GM-specific scan tool to check for communication errors with the BCM/TDM. In some cases, a 'global system reset' by disconnecting the battery cables and touching them together to discharge capacitors is a diagnostic step. A dealer is needed for definitive diagnosis.
   Typical fix: A dealer may perform a system reset, re-flash the BCM software, or in rare cases, replace the BCM. Disconnecting the car's main battery for several minutes can sometimes resolve temporary glitches. BCM replacement requires programming and can cost $700-$1500.
   Est. part cost: $0 for a reset, $800-$1500 for BCM replacement.

Rare But Worth Checking

• Transmission Control Module (TCM) Internal Fault:

Diagnosis Steps

1. Check for TSB PIC5650M (and later revisions), which directly addresses this issue.
2. Remove all other keys, fobs, toll passes, access cards, and aftermarket phone chargers from the vehicle and the key ring. Pay special attention to aftermarket LED lighting and USB chargers.
3. Attempt to start the vehicle with the simplified key. If it starts, you have found the source of RF interference.
4. If the no-start condition persists, try using the second key fob.
5. If the second fob works, replace the CR2450 battery in the primary fob.
6. If a new battery does not fix the primary fob, place it in the vehicle's designated fob holder (in the center console cupholder) and try to start the car. If it starts, this confirms a weak signal from the fob itself, which may be faulty.
7. If the vehicle still won't start with either fob, check the car's main 12V battery to ensure it has a full charge, as low voltage can cause various electronic module errors. A parasitic draw test may be needed; a normal draw after modules go to sleep should be under 50 milliamps.
8. If the car is stuck in accessory mode and won't turn off, investigate TSB 23-NA-176 regarding the TCM. As a temporary measure, pulling the TCM fuse may allow a restart.
🎬 See how to pull the TCM fuse if your car is stuck.
9. If all else fails, the vehicle will need to be diagnosed by a professional with a scan tool capable of reading GM body codes to check the status of the Theft Deterrent Module/Body Control Module.

Parts You'll Likely Need

• Key Fob Battery (OEM #CR2450) — This is the most common and cheapest part to fail that can cause this code.
  Trusted brands: Energizer, Duracell, Panasonic
  OEM price range: $5-$10
  Aftermarket price range: $2-$8
• Keyless Entry Transmitter (Key Fob) (OEM #13545167, 13536982, 13547762, 13538854 (Varies by button config/year)) — If the fob's internal electronics fail, it must be replaced and programmed by a dealer.
  Trusted brands: ACDelco (GM OEM)
  OEM price range: $150-$400
  Aftermarket price range: $70-$200

Related Codes That Often Appear With This One

• B3055 — This code relates to the key transponder. It is often set along with B3060 as part of the same security event.
• B3935 — Another transponder-related code that can be triggered by the same RF interference or key issues that cause B3060.
• C0750, C0755, C0760, C0765, C0775 — These are Tire Pressure Monitor (TPM) sensor codes. The TPM system also uses RF signals (315 MHz or 433 MHz), and significant interference can disrupt both the keyless entry and TPM systems simultaneously, as noted in TSB PIC5650.

Technical Service Bulletins (TSBs) & Recalls

• PIC5650M (and subsequent revisions like C, K): Addresses intermittent no-crank, no-start, or start/stall conditions with security light on, specifically citing B3060 and pointing to Radio Frequency Interference as a primary cause. It lists numerous sources of RFI, from toll passes to aftermarket LEDs.
• 23-NA-176: Addresses a no-crank condition where the vehicle may be stuck in accessory mode due to an internal fault in the Transmission Control Module (TCM). While not a direct cause of B3060, the symptoms are very similar and could be a related issue.

Platform-Specific Known Issues

• The C8 Corvette is highly sensitive to Radio Frequency Interference (RFI), as documented in GM TSB PIC5650M. Aftermarket LED lighting and certain phone chargers are known culprits.
• Some owners on CorvetteForum have reported intermittent no-start conditions with multiple dash warnings that were resolved by disconnecting and reconnecting the main vehicle battery, suggesting a potential for module software glitches that can be reset.

Mechanic-Grade Diagnostic Values

• Scan Tool 'Valid Key' Parameter — expected: Should read 'Yes' when a learned key is in the vehicle.. Failure: Reads 'No' when a learned key is present, indicating a problem with the key, antenna, or BCM/TDM.
• Immobilizer System Operating Frequency — expected: 125 kHz. Failure: N/A. This value is for identifying potential sources of Radio Frequency Interference (RFI), such as devices operating in the 120-135 kHz range.

Scan Tool Commands That Help

• GDS2 (GM Techline Connect): Immobilizer System Component Programming (IMMO) — This function is required when replacing a key fob, the Body Control Module (BCM), or the Theft Deterrent Module (TDM). It learns the new component's security information to the vehicle.
• GDS2 (GM Techline Connect): Clear DTCs — After a repair is completed, this function is used to clear the B3060 code and other related trouble codes from the module's memory. A history DTC will clear on its own after 100 malfunction-free ignition cycles.
• GDS2 (GM Techline Connect): 10-Minute Vehicle Key Relearn — Used to teach the vehicle existing keys after certain service procedures or if the system loses synchronization. This procedure can sometimes be initiated without a scan tool.

Wiring & Ground Locations

• K9 Body Control Module (BCM) — Located in the passenger footwell, underneath the carpet. The carpet can be pulled back from the top edge to gain access.. The BCM is the central computer for the theft deterrent system. All key fob signals are processed here. A loose connection or fault in the BCM is a primary cause of this code.
• Keyless Entry Antennas — The C8 Corvette uses multiple antennas for the Passive Entry Passive Start (PEPS) system. Locations include the front, rear, and sides of the vehicle. One specific antenna module (PN 13592452) is mentioned for various locations. A forum user reported an issue with an antenna located near the airbox.. These antennas receive the signal from the key fob. A faulty, disconnected, or obstructed antenna can prevent the BCM from receiving a valid key signal, triggering B3060.
• Main Engine to Frame Ground — A primary ground strap connects from the engine block (often near the starter or on the passenger side) to the vehicle's frame.. While not directly part of the theft deterrent circuit, a poor engine ground can cause widespread, intermittent electrical issues and module communication errors that could potentially manifest as a BCM or security-related fault.
• Battery to Frame Ground — The main negative battery cable connects to the frame, typically in the frunk area immediately below or near the battery box.. This is the master ground for the entire vehicle's electrical system. Corrosion or a loose connection here can cause unpredictable behavior in any module, including the BCM.

Real Owner Repair Stories

• CorvetteForum User (2020 Chevrolet Corvette C8) — Received a "Service Keyless Start System" message on the DIC shortly after taking delivery. Remote start and fob buttons worked, but passive/proximity functions did not.
  ❌ Tried (didn't work) Replacing the key fob battery., Charging the main 12V vehicle battery with a trickle charger and by driving for 60 miles.
  ✅ What actually fixed it The dealer diagnosed and replaced a faulty keyless entry antenna. The user mentioned the antenna was located near the airbox.