CTS V8-5.7L VIN P (2004)
Tires: All Technical Service Bulletins
ABS/TCS - Reprogrammin for Eagle RS-A(R) Tire Usage
Bulletin No.: 06-03-10-006
Date: June 09, 2006
INFORMATION
Subject:
Availability of Tires with Increased Treadwear and All-Season Traction Rating (Eagle RS-A)
Models:
2004-2005 Cadillac CTS-V
Attention:
This Service Bulletin offers information and specific procedures for reprogramming the electronic braking/traction assists of the CTS-V to maximize
performance when using Eagle RS-A All-Season Traction Rated Tires. While this bulletin is to be performed at customer pay, you must contact
TCSC and obtain a VCI number in order to reprogram the vehicle.
Original Equipment Tires
The original tire installed on the CTS-V is the Goodyear F1 Supercar tire. This tire was designed specifically for the CTS-V to achieve optimized dry
traction and handling performance, and as a result, tread life and all-season capability are reduced from a typical all-seasons design. Despite the high
performance nature of the Cadillac CTS-V series, some customers have requested information on an alternative tire with enhanced all-season ability.
Replacement All-Season Tires Available!
For customers that value increased tire tread life, increased all-season traction, and a softer/quieter ride, GM has identified a suitable replacement tire
that achieves these goals while retaining the run-flat ability of the original equipment tires. The Goodyear Eagle RS-A P245/45R18 EMT is a V-speed
rated High Performance All-Season Runflat tire. When switching from the original tires to the Eagle RS-A (or other possible manufacturers) All-Season
tires, it is necessary to revise the EBCM and PCM software calibrations. The revised calibrations will tailor vehicle powertrain and control systems to the
All-Season design tire. The suggested Eagle RS-A is a V-speed rated High Performance All-Season tire that when combined with updated vehicle
calibrations may achieve speeds of up to 239 km/h (149 mph).
The new calibrations are located both under the ABS tab and the PCM tab in the TIS terminal. After selecting the ABS tab, you will be given the choice
for the F1 Supercar Tire or the Eagle RS-A. Select the Eagle RS-A and follow normal recalibration procedures. You must input a VCI number to
perform the PCM portion of the reprogramming. Directly following recalibration you MUST perform a Brake Pedal Position Sensor Calibration using
the procedure below.
Important:
If the original style F1 Supercar tires are ever reinstalled, you must recalibrate back to the original part number programming. This programming is
available under the ABS tab and then by selecting Eagle F1 Supercar tires.
Important:
When switching from the original tires to the Eagle RS-A (or other possible manufacturers) All-Season tires, it is necessary to revise the EBCM and
PCM software calibrations. The revised calibrations will tailor vehicle powertrain and control systems to the All-Season design tire.
Brake Pedal Position Sensor Calibration
Important:
Directly following the vehicle reprogramming instructions above, you MUST perform a Brake Pedal Position Sensor Calibration.
Important:
Do not apply the brake pedal during the brake pedal position sensor calibration procedure. Any movement of the brake pedal during this procedure
will cause the calibration procedure to fail. If this occurs, the brake pedal position sensor calibration must be repeated.
Brake pedal position sensor calibration must be preformed after the brake pedal position sensor or electronic brake control module (EBCM) have been
serviced or reprogrammed. The calibration procedure will set the brake pedal position sensor home value. This value is used by the EBCM to determine
the action of the driver applying the brake system and to provide this information to the vehicle subsystems via the class 2 communication bus.
1.
Apply the parking brake.
2.
Place the transmission in the PARK position for automatic transmission or NEUTRAL for manual transmission.
3.
Install a scan tool.