Chevrolet Avalanche 2004–2005 — technical service bulletin

Bulletin 3111 · NHTSA communication 10010020 · issued Jan 1, 2004

Technical service bulletin

communication type

Equipment

component

2004–2005

model years

vehicle entries

Official summary

Navigation system coverage of canada. (2004-2005 chevrolet trailblazer, 2004-2005 gmc envoy, 2004-2005 buick rainier/rendezvous, 2004-2005 cadillac escalade, 2005 chevrolet avalanche/suburban/tahoe, 2004-2005 gmc denali, 2005 gmc yukon, and 2005 hummer h2) *sc

Vehicles covered

2004 Chevrolet Avalanche
2005 Chevrolet Avalanche
2004 Chevrolet Suburban
2005 Chevrolet Suburban
2004 Chevrolet Tahoe
2005 Chevrolet Tahoe
2004 GMC Yukon
2005 GMC Yukon
2004 Hummer H2
2005 Hummer H2

What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.