B3060 on 2007-2014 Buick LaCrosse: Unprogrammed Key and No-Start Fixes

What's Unique About the 2007-2014 Buick LACROSSE

The 2007-2014 LaCrosse spans two generations with different key systems but a shared vulnerability. The 2007-2009 models use a traditional key in an ignition cylinder, while 2010-2014 models may have either a traditional key or a keyless push-to-start system. For both systems, GM issued a very detailed and repeatedly updated technical service bulletin (PIC5650) pointing to a common issue where Radio Frequency (RF) devices on the keychain can interfere with the key's 125 kHz signal, causing this code to appear intermittently. The TSB lists everything from other car keys and building access cards to aftermarket LED lights and USB chargers as potential sources of interference.

Diagnostic Flowchart

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

Generation note: This range covers the end of the first generation (2007-2009, on the W-body platform) and the start of the second generation (2010-2014, on the Epsilon II platform). The first generation uses a standard key and ignition cylinder with the Pass-Key III+ system, which may report to a dedicated Theft Deterrent Module (TDM). The second generation integrated the immobilizer functions directly into the Body Control Module (BCM) and introduced keyless entry/push-button start options, which have a slightly different diagnostic procedure involving a transmitter pocket/slot for emergencies, but still rely on the same underlying transponder technology.

Symptoms You May Notice

• Engine does not crank or turn over.
• Engine starts briefly then immediately shuts off.
• Security indicator light is solid or flashing on the instrument cluster.
• "Service Theft Deterrent System" message on the driver information center.
• Instrument panel goes blank when attempting to start, then returns when the key is released.

Most Likely Causes

1. Radio Frequency Interference (RFI) 🔴 High Probability A repeatedly updated GM Technical Service Bulletin (PIC5650) specifically calls out this issue. Modern keychains often have other RFID-enabled items (office key cards, gas station payment fobs, other car keys) that can disrupt the low-power 125 kHz signal from the car key. The bulletin also warns against aftermarket LED lights and 12-volt accessories like phone chargers, which can also generate RFI.
   How to confirm: Remove all other keys, fobs, and cards from the keychain. Try starting the vehicle with only the single Buick key present. If the car starts, RFI was the cause. Also, unplug any aftermarket chargers or accessories.
   Typical fix: Keep other RFID-enabled devices separate from the car key while driving. Remove any non-essential aftermarket electronics.
   Est. part cost: $0
2. Using a New or Unprogrammed Key 🔴 High Probability
   How to confirm: This code will appear immediately if you attempt to start the car with a newly cut key that has not been programmed to the vehicle's BCM.
   Typical fix: The new key must be programmed to the vehicle using a special scan tool or by performing the key relearn procedure. 🎬 See how to program a new flip key remote yourself.
   Est. part cost: $0 (if relearn works), $50-$150 (for locksmith/dealer programming)
3. Key Has Lost Programming 🟡 Medium Probability This can happen intermittently due to low vehicle battery voltage during cranking, after a battery replacement, or due to data corruption in the BCM. A weak battery can cause a voltage drop sufficient to disrupt the BCM's key authentication process.
   How to confirm: Try starting the car with a known-good spare key. If the spare key works, the primary key has an issue. If neither key works, the problem may be with the vehicle itself. Ensure the vehicle battery is fully charged and tests good under load before proceeding.
   Typical fix: Attempt the 30-minute key relearn procedure. If that fails, the key may need to be professionally reprogrammed or replaced.
   Est. part cost: $0-$250
4. Damaged Key Transponder or Weak Fob Battery ⚪ Low Probability
   How to confirm: Visually inspect the key for damage. Replace the battery inside the key fob as a simple first step. If the key has been dropped or exposed to water, the internal transponder chip may be damaged. For push-to-start models, a 'No Fob Detected' message may appear, but the car may still start if the fob is placed in the designated transmitter pocket. 🎬 Watch: How to start your Buick with a dead fob battery.
   Typical fix: Replace the key fob battery. If the transponder is damaged, the entire key assembly must be replaced and programmed.
   Est. part cost: $5-$250

Rare But Worth Checking

• Faulty Immobilizer Antenna Ring: This is the coil around the ignition switch (or in the keyless start fob slot) that energizes and reads the key's transponder. If it fails, it cannot read any key, even a good one. Diagnosis requires testing the circuit with a multimeter or scan tool data. A replacement is often sold as an 'Ignition Lock Key Transmitter Antenna'.
• Faulty Body Control Module (BCM): This is an unlikely cause. The BCM is the computer that manages the security system. A failing BCM often causes multiple, unrelated electrical issues simultaneously, such as erratic lights, window/lock problems, and false dashboard warnings. It should only be considered after all other possibilities (keys, battery, wiring, antenna) have been ruled out. A replacement BCM must be programmed to the vehicle's VIN.

Diagnosis Steps

1. Check the security light on the dashboard. A flashing or solid light confirms an active anti-theft issue.
2. Remove all other fobs, keys, and RFID cards from your keychain. Unplug any aftermarket 12V chargers or USB devices. Try starting with just the single Buick key.
3. If you have a spare key, try it. If the spare works, the issue is with the primary key.
4. Check vehicle battery voltage. A battery below 12.4V at rest may not have enough power to maintain module communication during cranking. Charge and test the battery.
5. Replace the small battery inside the key fob (CR2032).
6. Attempt the '30-Minute Relearn Procedure': Turn the key to the 'ON' position (do not crank), and wait approximately 10 minutes until the security light stops flashing and turns off or goes solid. Turn the key off for 10-15 seconds. Repeat this process two more times for a total of three 10-minute cycles. After the third cycle, turn the key off, then try to start the engine.
7. If the relearn procedure fails, a professional technician will use a scan tool (like GDS2 for 2010+ models) to monitor the BCM's key status data (e.g., 'Valid Key' parameter) and determine if the key is being read correctly.
8. Inspect the wiring and connectors for the immobilizer antenna ring around the ignition cylinder (or in the center console for push-start models).
9. As a final step, diagnose the Body Control Module (BCM) for internal failure, paying attention to other unrelated electrical symptoms in the vehicle.

Parts You'll Likely Need

• Transponder Ignition Key — This is the most common fix, required if the original key's internal transponder chip is damaged or the key is lost.
  Trusted brands: ACDelco
  OEM price range: $80-$150
  Aftermarket price range: $40-$90
• Immobilizer Antenna Ring (OEM #13502551) — If the vehicle cannot read any programmed keys, the antenna that reads the transponder chip may have failed. This part is officially called an 'Ignition Lock Key Transmitter Antenna'.
  Trusted brands: ACDelco, GM Genuine Parts
  OEM price range: $25-$50
  Aftermarket price range: $20-$40

Related Codes That Often Appear With This One

• B3055 — This code means 'No Transponder Modulation or No Transponder' and is often set alongside B3060 as part of the same security event, indicating the BCM did not receive any signal from the key.
• B3935 — This code relates to 'Transponder Authentication Error' and is also frequently found with B3060 and B3055 during a security-related no-start event.

Technical Service Bulletins (TSBs) & Recalls

• PIC5650 (revisions B, C, K, M): This is the primary TSB for this issue. It addresses intermittent no crank, no start, or start/stall with the security light on, citing B3060, B3055, and B3935. It highlights Radio Frequency Interference (RFI) from a long list of devices (other keys, toll passes, aftermarket chargers).

Platform-Specific Known Issues

• Per TSB PIC5650M and its successors, this platform is highly susceptible to intermittent no-start conditions caused by radio frequency interference from other devices on the owner's keychain or even aftermarket electronics inside the car like LED lights and phone chargers.
• A user on the Car Talk Community forums described a 2010 LaCrosse with intermittent electrical issues (window, radio, lights) that were suggested to be early signs of a failing Body Control Module (BCM), which can eventually lead to a no-start and B3060.

Hidden / Shadow Codes Worth Checking

• B3060 00: The '00' is a standard failure type code used by GM, indicating 'No Sub Type Information'. It means the primary code description ('Unprogrammed Transponder Identification Code Received') is the most specific information available through standard diagnostics. (see via Any professional scan tool capable of reading GM body codes, including the factory GDS2 tool.)

Scan Tool Commands That Help

• GDS2 (for 2010-2014 models): Immobilizer Data Display — Use this to view live data parameters like 'Valid Key' status to confirm if the BCM is successfully reading and validating the key transponder in real-time.
• GDS2 / Tech2: Immobilizer Learn / Programming — This function is required to program new or additional keys to the vehicle's BCM/TDM after a key replacement or if a key has lost its programming.
• GDS2: BCM Control Functions (e.g., lights, locks) — While not a direct immobilizer test, using bidirectional controls to activate other BCM-controlled components can help verify that the BCM is powered, grounded, and communicating properly on the data bus, which is a prerequisite for the immobilizer system to function.

Wiring & Ground Locations

• BCM Location (2010-2014) — Under the driver's side of the dashboard.. This is the location of the main computer that controls the immobilizer system. Physical access is needed to inspect its connectors for damage or corrosion.
• G103 (2007-2009) — Located on the cowl in the engine compartment, above the brake booster.. This is a critical ground point that serves the Body Control Module (BCM) and the Remote Control Door Lock Receiver (RCDLR). A poor connection here can cause intermittent BCM issues, including failure to recognize a valid key.
• BCM Connectors (All Years) — The multi-pin connectors plugging into the Body Control Module.. GM vehicles of this era can be susceptible to fretting corrosion (microscopic oxidation) on BCM connector pins, particularly the C2 connector. This creates high resistance and can intermittently disrupt the signal from the key or immobilizer antenna, causing a B3060 code even if all components are otherwise functional.

Real Owner Repair Stories

• Reddit user post (2011 LaCrosse CXL 3.6L AWD) — Car stalled, then would not crank over, with security system suspected. Multiple codes present.
  ❌ Tried (didn't work) Replacing the throttle body., Replacing the ECU (Engine Control Unit) with a pre-flashed unit., Attempting the standard 30-minute key relearn procedure.
  ✅ What actually fixed it The user did not post a final resolution, but noted that multiple mechanics and a locksmith stated a 'special computer' (implying a dealer-level tool like GDS2) was required to get the car out of 'stolen mode' after the incorrect parts were replaced. This highlights the failure of common fixes and the necessity of proper diagnostic tools when the issue is complex.

OEM Part Supersession History

• 13502551 → 13502551 — No supersession found.
  Heads up: Part number 13502551 (Ignition Lock Key Transmitter Antenna) appears stable and is used across a wide variety of 2010-2020 GM vehicles, suggesting no major compatibility changes within the 2010-2014 LaCrosse model years.

Model Year Variations Within This Range

• 2007-2009: These first-generation models may use a dedicated Theft Deterrent Module (TDM) for the Pass-Key III+ system, separate from the BCM. Diagnosis would focus on the TDM and its specific ground, G103.
• 2010-2014: These second-generation models integrate the immobilizer logic directly into the Body Control Module (BCM). Diagnosis requires the GDS2 scan tool platform and focuses on the BCM located under the driver's dash.