Philips 46 Crypto Tag Transponder Chip - GM Circle Plus TP12GM

The Philips 46 Crypto Tag Transponder Chip (also known as GM Circle-Plus or TP12GM) uses the Philips/NXP ID46 (PCF7936) encrypted system. This chip is designed for General Motors vehicles equipped with the Circle-Plus immobilizer system.

• Chip Type: Philips ID46 GM Circle-Plus (PCF7936A/AS), TP12GM.
• Common Key Shells: B111-PT, B114-PT, B121-PT, among others.
• Usage: Compatible with vehicles such as Buick Enclave, Cadillac Escalade, Chevrolet Silverado, GMC Yukon, Pontiac G8, Saturn Sky, and more, spanning mid-2000s to mid-2010s models.
• Programming: The chip is blank and must be programmed using a professional key programming tool or through OBD diagnostics to match the vehicle’s immobilizer.

Once properly programmed, the Philips ID46 GM Circle-Plus chip restores full ignition and immobilizer functionality. It is widely used for key replacements, duplication, and automotive locksmith services for GM platforms.