Buick Estate 1990–2006 — technical service bulletin
Bulletin 020730024A · NHTSA communication 634999 · issued Aug 1, 2005
Technical service bulletin
communication type
Power Train
component
1990–2006
model years
60
vehicle entries
Official summary
Diagnosis of cracked or broken transmission case. *tt 2006 and prior cars and light duty trucks. *tt
Vehicles covered
- 1990 Buick Estate
- 1991 Buick Estate
- 1992 Buick Estate
- 1993 Buick Estate
- 2004 Buick Rainier
- 1990 Buick Roadmaster
- 1991 Buick Roadmaster
- 1992 Buick Roadmaster
- 1993 Buick Roadmaster
- 1999 Cadillac Escalade
- 2000 Cadillac Escalade
- 2001 Cadillac Escalade
- 2002 Cadillac Escalade
- 2003 Cadillac Escalade
- 2004 Cadillac Escalade
- 2005 Cadillac Escalade
- 1990 Cadillac Fleetwood
- 1991 Cadillac Fleetwood
- 1992 Cadillac Fleetwood
- 1993 Cadillac Fleetwood
- 1994 Cadillac Fleetwood
- 1995 Cadillac Fleetwood
- 1996 Cadillac Fleetwood
- 1990 Chevrolet Astro
- 1991 Chevrolet Astro
- 1992 Chevrolet Astro
- 1993 Chevrolet Astro
- 1994 Chevrolet Astro
- 1995 Chevrolet Astro
- 1996 Chevrolet Astro
- 1997 Chevrolet Astro
- 1998 Chevrolet Astro
- 1999 Chevrolet Astro
- 2000 Chevrolet Astro
- 2001 Chevrolet Astro
- 2002 Chevrolet Astro
- 2003 Chevrolet Astro
- 2004 Chevrolet Astro
- 1999 Chevrolet Avalanche
- 2000 Chevrolet Avalanche
- 2001 Chevrolet Avalanche
- 2002 Chevrolet Avalanche
- 2003 Chevrolet Avalanche
- 2004 Chevrolet Avalanche
- 2005 Chevrolet Avalanche
- 1990 Chevrolet Blazer
- 1991 Chevrolet Blazer
- 1992 Chevrolet Blazer
- 1993 Chevrolet Blazer
- 1994 Chevrolet Blazer
- 1995 Chevrolet Blazer
- 1996 Chevrolet Blazer
- 1997 Chevrolet Blazer
- 1998 Chevrolet Blazer
- 1999 Chevrolet Blazer
- 2000 Chevrolet Blazer
- 2001 Chevrolet Blazer
- 2002 Chevrolet Blazer
- 2003 Chevrolet Blazer
- 2004 Chevrolet Blazer
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.