C 1500 Truck 2WD V6-4.3L VIN X (2003)
Fuse: Technical Service Bulletins
Audio System - Diagnostics for No Sound From Speakers
File In Section: 08 - Body and Accessories
Bulletin No.: 02-08-44-018
Date: October, 2002
INFORMATION
Subject:
Diagnostic Information for No Audio Out of Speakers on One or More Channels
Models:
2003 Cadillac Escalade, Escalade EXT
2003 Chevrolet Silverado, Suburban, Tahoe
2003 GMC Sierra, Yukon, Yukon XL
2003 HUMMER H2
with Premium (Bose(R) Sound Systems
Important:
Before disconnecting the Bose(R) amplifier for an audio system speaker diagnostic procedure, the 30 Amp Amplifier fuse must be removed from the
Underhood Bussed Electrical Center (UBEC). When diagnosing a condition of no audio from one or more channels, the 30 Amp Amplifier fuse must
be removed from the UBEC before beginning any speaker/wire diagnosis.
Failure to remove the 30 Amp fuse from the UBEC can result in a damaged Bose(R) amplifier. When the wires are reconnected to the amplifier with the
fuse in place, the resulting electrical surge can cause a failure of the Bose(R) amplifiers internal components.
