Cadillac Escalade 1999–2005 — technical service bulletin
Bulletin 3121A · NHTSA communication 10009936 · issued Jan 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
1999–2005
model years
27
vehicle entries
Official summary
Exhaust vibration resonance or moan 99-05 full size trucks and utility vehicles with gen 3 v-8 engines. *tc
Vehicles covered
- 1999 Cadillac Escalade
- 2000 Cadillac Escalade
- 2001 Cadillac Escalade
- 2002 Cadillac Escalade
- 2003 Cadillac Escalade
- 2004 Cadillac Escalade
- 2005 Cadillac Escalade
- 2003 Cadillac Escalade Esv
- 2004 Cadillac Escalade Esv
- 2002 Cadillac Escalade Ext
- 2003 Cadillac Escalade Ext
- 2004 Cadillac Escalade Ext
- 1999 Chevrolet Sierra
- 2000 Chevrolet Sierra
- 2001 Chevrolet Sierra
- 2002 Chevrolet Sierra
- 2003 Chevrolet Sierra
- 1999 Chevrolet Yukon
- 2000 Chevrolet Yukon
- 2001 Chevrolet Yukon
- 2002 Chevrolet Yukon
- 2003 Chevrolet Yukon
- 2000 Chevrolet Yukon XL
- 2003 Hummer H2
- 2004 Hummer H2
- 2005 Hummer H2
- 2004 Hummer H2 Sut
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.