# Service bulletin 020730024A A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned. - Type: Service bulletin - NHTSA id: 634999 - Published by NHTSA: 2002\-10\-11 - Manufacturer's number: 020730024A - Manufacturer's date: 2005\-08\-01 - Replaces: 020730024B - NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT ## NHTSA's summary DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE. \*TT 2006 AND PRIOR CARS AND LIGHT DUTY TRUCKS. \*TT ## The document No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number. ## Components Transmission and driveline, Automatic transmission ## Vehicles listed - 1990 to 1993 BUICK ESTATE - 2004 BUICK RAINIER - 1990 to 1993 BUICK ROADMASTER - 1999 to 2005 CADILLAC ESCALADE - 1990 to 1996 CADILLAC FLEETWOOD - 1990 to 2004 CHEVROLET ASTRO - 1999 to 2001 CHEVROLET AVALANCHE - 2002 to 2005 CHEVROLET AVALANCHE - 1990 to 2004 CHEVROLET BLAZER - 1990 to 2002 CHEVROLET CAMARO - 1990 to 1996 CHEVROLET CAPRICE - 2004 to 2005 CHEVROLET COLORADO - 1990 to 2005 CHEVROLET CORVETTE - 1996 CHEVROLET EXPRESS - 1997 to 2005 CHEVROLET EXPRESS - 1995 to 1996 CHEVROLET IMPALA - 2000 to 2005 CHEVROLET IMPALA - 1990 to 2004 CHEVROLET S10 - 1990 to 1998 CHEVROLET SILVERADO - 1999 to 2005 CHEVROLET SILVERADO - 1990 to 2005 CHEVROLET SUBURBAN - 2004 to 2005 CHEVROLET TAHOE - 2002 to 2005 CHEVROLET TRAILBLAZER - 2004 to 2005 GMC CANYON - 1999 to 2001 GMC ENVOY - 2002 to 2005 GMC ENVOY - 1990 to 1991 GMC JIMMY - 1992 to 2004 GMC JIMMY - 1990 to 2005 GMC SAFARI - 1993 to 1995 GMC SAVANA - 1996 to 2005 GMC SAVANA - 1990 to 2005 GMC SIERRA - 2004 GMC SIERRA DENALI - 1995 to 2004 GMC SONOMA - 1990 to 1997 GMC SUBURBAN - 1998 to 2003 GMC TAHOE - 1990 to 1991 GMC YUKON - 1992 to 2005 GMC YUKON - 2003 to 2006 HUMMER H2 - 2006 HUMMER H3 - 1991 to 2004 OLDSMOBILE BRAVADA - 1990 to 1992 OLDSMOBILE CUSTOM CRUISER - 1990 to 2002 PONTIAC FIREBIRD - 2005 SAAB 9\-7X ## Recalls for the same vehicles and component - [04V320000](/recalls/nhtsa/04V320000.md), 2004-07-06: POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT - [03V075000](/recalls/nhtsa/03V075000.md), 2003-03-06: POWER TRAIN:AUTOMATIC TRANSMISSION - [95V221000](/recalls/nhtsa/95V221000.md), 1995-11-16: POWER TRAIN:AUTOMATIC TRANSMISSION - [95V139000](/recalls/nhtsa/95V139000.md), 1995-07-26: POWER TRAIN:AUTOMATIC TRANSMISSION - [95V026000](/recalls/nhtsa/95V026000.md), 1995-02-16: POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES - [94V093000](/recalls/nhtsa/94V093000.md), 1994-05-16: POWER TRAIN:AUTOMATIC TRANSMISSION - [93V016000](/recalls/nhtsa/93V016000.md), 1993-02-01: POWER TRAIN:AUTOMATIC TRANSMISSION - [92V154000](/recalls/nhtsa/92V154000.md), 1992-10-23: POWER TRAIN:AUTOMATIC TRANSMISSION ## Other bulletins for the same vehicles and component - [06\-00\-89\-031D](/bulletins/10201098.md), 2021-09-07, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN; ENGINE. OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification - [06\-00\-89\-031D](/bulletins/10190503.md), 2021-04-20, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification - [1308116001F](/bulletins/10183782.md), 2020-12-07, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION. The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them. - [PIP3330D](/bulletins/10160997.md), 2019-06-10, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM. This Preliminary Information Document advises the dealer that there is a software update available for the Powertrain Control Module to address diagnostic trouble code P0171. If the software update does not correct the condition, the dociment directs the dealer to related technical servce bulletins that cover cleaning fuel injectors and addressing fuel quality. - [PIP3366C](/bulletins/10143757.md), 2018-08-20, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\); POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary information communicates to the dealer technician thatLight Duty Trucks equipped with automatic transmissions and 4 wheel drive may exhibit a condition of grinding/ratcheting type noise when shifting the automatic transmission into park while the transfer case is in 4 wheel drive low \(4LO\) range. Dealers technician\&\#39;s are advised this condition should be deemed a normal characteristic of 4WD low operation. - [09\-07\-30\-018D](/bulletins/10139036.md), 2018-06-04, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; EQUIPMENT. This informational bulletin provides a revision for 09\-07\-30\-018C to add the 2014 model year and update the Labor Operation. - [01\-00\-89\-010J](/bulletins/10138197.md), 2018-05-21, Service bulletin: ENGINE; SERVICE BRAKES; EQUIPMENT; POWER TRAIN:AUTOMATIC TRANSMISSION. This informational bulletin provides a revision for 01\-00\-89\-010I to add the 2013 model year. - [01\-07\-30\-042H](/bulletins/10137776.md), 2018-05-21, Service bulletin: POWER TRAIN:CLUTCH ASSEMBLY; POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; POWER TRAIN. This information was created to inform the technician that the 2\-3 upshift and the 3\-2 downshift clunk is caused by the releasing of the 2\-4 band and application of the 3\-4 clutch assembly during an upshift. Also during a 3\-2 downshift, the releasing of the 3\-4 clutch during the application of the 2\-4 band, can cause torque reversal down the output shaft creating a clunk. This is a normal condition. - [120310002](/bulletins/10126191.md), 2017-12-22, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. This informational bulletin provides a description of the proper wheel installation and proper wheel torque techniques used to install wheels onto vehicles - [09\-07\-30\-018C](/bulletins/10118634.md), 2017-10-12, Service bulletin: POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION. This warranty administration bulletin provides information on the change in automatic transmission add conditions documentation and claim submissions JSON: [/v1/bulletins/634999](/v1/bulletins/634999) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20020730024A&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F634999&vehicle=Service%20bulletin%20020730024A)