2003 chevrolet silverado 5.3L immobilizer reset procedures

Question edited for clarity.
Question moved to model category.

Is your security light flashing? It sounds like the engine immobilizer is activated.

How do I reset my 2003 chevy silverado security system?

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How do you reset the computer and or the passlock, anti

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1 answer · Top answer: Ok, let me know. Thanks

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None of them! That's not the way the alarm and anti-theft immobilizer works. This explains.

https://www.fixya.com/cars/r29887709-gm_passlock_security_system

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The engine immobilizer is an anti-theft system found on many newer vehicles, including the 2003 Toyota Camry. When the engine immobilizer is activated, the car's engine will not start unless the correct key is used. This helps to prevent unauthorized individuals from starting and driving the vehicle.
To deactivate the engine immobilizer, you will need to use the correct key. If you do not have the correct key, you may need to have a new key made or have the immobilizer system deactivated by a professional.
If you are having problems with the engine immobilizer system on your 2003 Toyota Camry, it is recommended to take the vehicle to a Toyota dealership or a qualified mechanic for diagnosis and repair.

https://s11.postimg.org/c0gbbezs3/learn_procedure.jpg

Click on the link.
You can try learn procedure, see if it helps? Some of my info says to hook-up battery charger on low charge, this is a 30 minute procedure.
When you try to start and key returns to run position, if the security lamp on the dash doesn't start flashing, your security system might not be the problem?
When battery voltage is lost some of your vehicle systems/modules may or may not have problems.

there is a "special policy" for that vehicle

Document ID# 2037454


Subject: Special Coverage Adjustment-Instrument Panel Cluster Gauge Needle Functions #07187A - (11/08/2007)



Models: 2003-2004 CADILLAC ESCALADE, ESCALADE ESV, ESCALADE EXT

2003-2004 CHEVROLET AVALANCHE, SILVERADO, SUBURBAN, TAHOE

2003-2004 GMC SIERRA, YUKON, YUKON XL


THE SERVICE PROCEDURE IN THIS BULLETIN HAS BEEN REVISED. IN A SMALL NUMBER OF VEHICLES, THE GAUGE SWEEP TEST MAY NOT ALWAYS CONFIRM THE CONDITION. PLEASE REVIEW THE SERVICE PROCEDURE IMMEDIATELY.


DUE TO PART AVAILABILITY, THIS SPECIAL COVERAGE IS BEING ADMINISTERED IN PHASES. YOU WILL BE NOTIFIED AS EACH ADDITIONAL PHASE IS RELEASED.

CUSTOMERS ARE BEING INSTRUCTED TO CONTACT THE DEALERSHIP TO ARRANGE AN APPOINTMENT IF THEY BELIEVE THEIR VEHICLE HAS THIS CONDITION. THE CUSTOMER IS BEING ASKED TO PROVIDE THE VIN SO THE IPC CAN BE ORDERED IN ADVANCE OF THE SCHEDULED APPOINTMENT. THIS WILL ELIMINATE THE NEED TO KEEP THE VEHICLE OVERNIGHT. DEALERS ARE TO OBTAIN THE VEHICLE MILEAGE WHEN SCHEDULING A SERVICE APPOINTMENT. THE VEHICLE MILEAGE WILL BE REQUIRED WHEN PLACING AN ORDER FOR THE IPC.

Condition
Some customers of 2003-2004 model year Cadillac Escalade, Escalade ESV, and Escalade EXT; Chevrolet Avalanche, Silverado, Suburban, and Tahoe; and GMC Sierra, Yukon, and Yukon XL vehicles have reported that one or more of the instrument panel (IP) cluster gauges stick, flutter, or become inoperative. This may cause inaccurate readings, including the speedometer and fuel gauge.

Special Coverage Adjustment
This special coverage covers the condition described above for a period of 7 years or 70,000 miles (110,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership.

Dealers are to replace the instrument panel cluster after the condition has been verified. The repairs will be made at no charge to the customer.

For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after September 28, 2007 are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to September 28, 2007, must be submitted to the Service Contract provider.

Vehicles Involved
Involved are certain 2003-2004 model year Cadillac Escalade, Escalade ESV, and Escalade EXT; Chevrolet Avalanche, Silverado, Suburban, and Tahoe; and GMC Sierra, Yukon, and Yukon XL vehicles built within the following VIN breakpoints:

There are two ways to obtain a copy:

• 1. You can register your vehicle by visiting the GM Owner Center to download a complimentary electronic copy (for most vehicles from 1995 to present), or the GM Goodwrench site to order a printed copy.
• 2. To receive a paper copy (for a fee) you may contact Helm, Inc. Manuals are available from the late 1960s or early 1970s for most GM vehicles. You can reach Helm Publications Ordering at 1-800-551-4123.

No
Is the TPS slotted and needs to be adjusted?

New TPS in your old throttle body?

There would be no reason to replace the
entire thing!!

turn key on and pat gas three times within 5 seconds and light should blink. cut key off and crank vehicle light should be out if not try it again.

Information courtesy of synthetic-direct.ca
Chevrolet Suburban/GMC Yukon XL, 2000-05 Chevrolet GMC Trucks Silverado, Sierra, 1999-05 Chevrolet Venture 2000
Turn the ignition key to the RUN position. Fully push and release the accelerator pedal 3 times within 5 seconds. If the CHANGE OIL SOON light flashes 2 times, the system is reset. However if the light comes on and stays on for 5 seconds, the system did not reset. Repeat the procedure if the system does not reset.
Best of luck.
Greg

to find out what the code is and/or erase codes you need an obd2 code reader. you can pick one up at any autoparts store,. and ur uplink should be under the dash