Hummer H2 Tech Bulletins / Recalls

[Klaus]

Document ID # 1167958
2003 HUMMER H2

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Info - Diagnostic Information for No Audio Out of Speakers on One or More Channels #02-08-44-018
Diagnostic Information for No Audio Out of Speakers on One or More Channels
2003 Cadillac Escalade, Escalade EXT

2003 Chevrolet Silverado, Suburban, Tahoe

2003 GMC Sierra, Yukon, Yukon XL

2003 HUMMER H2

with Premium (Bose®) Sound Systems


Important
Before disconnecting the Bose® 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® 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® amplifiers internal components.