Silverado 1500 2WD V8-4.8L VIN V (2006)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Campaign - PCM Software Update
Subject:
System Software Upgrade - OBD System Software Upgrade - OBD System Improvements (Reprogram Powertrain Control Module (PCM))
# 06505 - (05/15/2006)
Models:
2006 CHEVROLET SILVERADO CHASSIS CAB, SUBURBAN, AVALANCHE
2006 GMC SIERRA CHASSIS CAB, YUKON XL
EQUIPPED WITH DUAL FUEL TANKS
Purpose
This bulletin provides information about installing new Powertrain Control Module (PCM) software and calibration on certain involved 2006 Chevrolet
Silverado chassis cab, Suburban, Avalanche; GMC Sierra chassis cab and Yukon XL model trucks, equipped with dual fuel tanks. The revised
calibration includes OBD system improvements that affect the fuel level sender diagnostics that should be installed as soon as practical. Install the new
calibration on all affected vehicles identified in this bulletin, including vehicles in new dealer inventory and any vehicles that return for service, for any
reason, during the applicable 8 year / 80,000 mile (130,000 km) emission controller warranty coverage period. To verify if an updated calibration is
required, refer to the following procedure in this bulletin.
Parts Information
Do not attempt to order the calibration number from GMSPO. The calibration numbers are programmed into Control Modules via a Techline Tech 2
scan tool and the Techline Information System (TIS) 2000 terminal with the calibration update. Use data version 2.5 for 2006 or later, broadcast to
dealers on February 19, 2006; and on TIS CD-ROM version 3.0 / 2006 or later, mailed to dealers beginning on March 15, 2006. If you cannot access the
calibration, call the Techline Customer Support Center and it will be provided.
Service Procedure
The "Required Field Actions" section of the GM Vehicle Inquiry System (GMVIS) must be checked to determine if a specific vehicle requires this
action. If GMVIS indicates that System Software Upgrade 06505 remains [Isquo ]open' and PCM reprogramming has not taken place otherwise after the
TIS Broadcast or CD-ROM availability dates identified in this bulletin, reprogram the PCM using a Tech 2 scan tool with the calibration update from
Techline Information System (TIS) 2000.
Tech 2(R) Remote Programming Method for PCM
Notice:
Before reprogramming, please check the battery condition to prevent a reprogramming error of any of the modules due to battery discharge.
Battery voltage must be between 12 and 16 volts during reprogramming. If the vehicle battery is not fully charged, use jumper cables from an
additional battery. Be sure to turn off or disable any system that may put a load on the battery, such as automatic headlamps, daytime running
lights, interior lights, heating, ventilation, and air conditioning (HVAC) system, radio, engine cooling fan, etc. A programming failure or
control module damage may occur if battery voltage guidelines are not observed.
The ignition switch must be in the proper position. The Tech 2(R) prompts you to turn ON the ignition, with the engine OFF. DO NOT change the
position of the ignition switch during the programming procedure, unless instructed to do so.
Make certain all tool connections are secure, including the following components and circuits:
^
The RS-232 communication cable port
^
The connection at the data link connector (DLC)
^
The voltage supply circuits
DO NOT disturb the tool harnesses while programming. If an interruption occurs during the programming procedure, programming failure or
control module damage may occur.
DO NOT turn OFF the ignition if the programming procedure is interrupted or unsuccessful. Ensure that all control module and DLC connections
are secure and the TIS terminal operating software is up to date.
1.
Verify the battery charge of 12 to 16 volts. The battery must be able to maintain the charge during programming. Use an additional jump battery if
necessary.
2.
Use the normal "request method" through "Service Programming System" to request information from the vehicle.
