Bulletin No.: 99-08-52-005C
Date: January 30, 2008
Remote Keyless Entry Operational Characteristics
1997-2008 All Passenger Cars and Trucks
2003-2008 HUMMER H2
2006-2008 HUMMER H3
2005-2008 Saab 9-7X
with Remote Keyless Entry
This bulletin is being revised to add model years and additional
information. Please discard Corporate Bulletin Number 99-08-52-005B
(Section 08 - Body and Accessories).
The following information regarding Remote Keyless Entry (RKE) operation may be given to customers as needed.
The General Motors RKE systems operate on high frequency radio
signals. Therefore they may be subject to radio signal interference
which will affect RKE operation. Some of the typical conditions which
result in reduced RKE transmitter operation are listed below.
To prevent battery drain, RKE transmitter will lock up if any button
or buttons are depressed longer than 30 seconds. The transmitter will
unlock if another button is depressed. While programming the
transmitter in the relearn mode, use the J 43241 tester, to confirm
that the signals are being transmitted to the RCDLR. If the RKE locks
up during the programming, depress another button to unlock the RKE.
Note Always refer to SI for latest diagnostic information
If on the second press of the unlock button all doors are not
unlocked it may be due to the time delay needed by the system to
recognize the second press of the unlock button. In order to unlock all
doors press the unlock button once pause 1-2 seconds and press the
unlock button the second time.
There needs to be a pause between button presses so that the receiver can properly process the signal from the transmitter.
For many 2006 and later car lines the trunk release button requires a press and hold before the trunk lid will release.
Line of sight. The transmitter signal may be obstructed by
obstacles; another vehicle building or other obstructions in the line
Proximity to radio towers airports police and fire towers.
The presence of fluorescent lighting.
Installation of some aftermarket accessories have been known to affect the RKE performance as well.
Some brands of radar detectors CB radios walkie talkies mobile
radios cell phone chargers and cell phones (especially 3-watt bag
phones which are placed on the floor of the vehicle) have jammed the
radio frequencies of the RKE system.
Remember these devices do not have to be in the customers vehicle.
They may be in another vehicle which is in close proximity. However if
the customer has one of these devices in their vehicle and if the RKE
system works with these aftermarket devices unplugged refer the
customer to the aftermarket supplier. The aftermarket device may not
meet the requirements of the FCC Code.
If the customer comments that the remote transmitter fails to
operate press each button on the transmitter one at a time while
observing the vehicle systems.
If only the fuel door (Cadillac) or panic button (all other
vehicles) works or the transmitter fails to operated re-synchronize the
system following the transmitter synchronization procedure found in the
Keyless Entry sub-section of Body & Accessories in the Service
Manual. If the RKE system is auto-synchronized reprogram the
transmitter following the procedures in the Keyless Entry sub-section
DO NOT REPLACE ANY COMPONENTS.
Re-synchronization must be performed if the following conditions exist:
The batteries of the keyless entry transmitter have been replaced. A keyless entry transmitter is malfunctioning.
If all of the transmitter buttons fail to function check the battery
and transmitter using tester J 43241. Refer to Corporate Bulletin
If the transmitter passes the test program the RKE system following
the procedures in the Keyless Entry sub-section of Body &
Accessories in the Service Manual.
Remember when programming the system, all transmitters for the vehicle must be present for the programming to be successful.
On many 2006 vehicle lines RKE transmitter commands can be viewed using a scan tool (under RCDLR Data Displays).
If the transmitter fails the test with the tester J 43241 replace
the batteries and retest the transmitter using the tester J 43241. If
the transmitter still fails the test replace the transmitter.
THE FOLLOWING CLAIM TYPES ARE NOT COVERED UNDER THE VEHICLE WARRANTY:
The battery is considered a consumable battery and is covered for
the first 12 months only. Refer to "Maintenance" in the In-Vehicle
Warranty Booklet. Battery life is determined by the number of times a
pad on the transmitter has been used, not by time or mileage and as
such, battery replacement would be considered owner maintenance (i.e.
batteries in a flash light, engine oil changes).
Transmitter replacement when all buttons work, using the tester J 43241 as outlined in Corporate Bulletin Number 83-90-12.
Personalization programming through the DIC or Tech 2(R).
Lost/replacement transmitter reprogramming.
Used car transmitter replacement programming.
Transmitter damage due to misuse, such as any liquid spilled on/in
the transmitter or damage from animals chewing on the transmitter, etc.
Broken transmitter cases where the key ring attaches to the case. If
the case is broken in this area, it is due to mounting the transmitter
direct to the key ring without the protection of the small ring. The
small ring acts like a universal joint/flex joint and helps protect the
transmitter from this type of damage. Refer to Corporate Bulletin
Number 03-08-52-003 for EXCEPTIONS to this rule.
Garage door opener programming.