I had the same problem with mine. Take it to the dealer as there is a TSB for this. It will need a software update and then everything will work fine.
From Small Dealer:
There is a possible issue with some early 2008 Solstices, where the TPMS can not be updated by the add/release pressure method in the learn mode.
Subject: Key Fobs Inoperative, TPM System Not Reading Correctly - Dashes On All Four Tire Readings, DTCs C0775, C0569, B3105 Set, Unable to Program TPM Sensors (Reprogram RCDLR)
2008 Chevrolet Cobalt, HHR, Malibu
2008 Pontiac G5, G6, Solstice
2008 Saturn AURA, SKY
Some customers may comment that the key fobs are inoperative or that the TPM system is showing dashes as the reading for all four tires.
Technicians may find DTCs C0775, C0569 and B3105 set simultaneously in the RCDLR module.
In addition, the technicians may find Tire Pressure Monitoring sensors are unable to be programmed to the vehicle by adding or releasing pressure to the tire while the vehicles in the TPM learn mode.
These conditions may be caused by the following:
• The RCDLR may lose its transmitter and tire pressure monitoring data from its memory if a low voltage condition occurs on the vehicle.
• The ability for TPM learning by adding or releasing pressure to the tire has been disabled in the RCDLR.
Reprogram the RCDLR with an updated software calibration to address both issues listed above.
Once the RCDLR module has been reflashed with the latest software and calibrations, the following may also be necessary:
• Relearn all keyless entry transmitters.
• Reconfigure the tire pressure placards and the tire type.
• Relearn the tire pressure sensors.
Refer to SI for the procedures to relearn transmitters, placard and tire type configuration and tire pressure sensor learn.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
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Last edited by typhoon; 02-14-2010 at 02:58 PM.