Service bulletins for the 2003 Hummer H2
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.
750 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
Only bulletins with component: Transmission and driveline are shown. Show all
| 010730042A | 2003-03-29. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. INFORMATION ON 2-3 UPSHIFT OR 3-2 DONWSHIFT CLUNK NOISE FOR 2003 AND PRIOR LIGHT DUTY TRUCKS. *TT THIS BULLETIN REPLACES 01-07-30-042A DATED 10/01/2002. 2004 AND PRIOR LIGHT DUTY TRUCKS. *TT |
|---|---|
| 010102 | 2003-02-28. Service bulletin. POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT. INFORMATION ON PARTS AVAILABILITY FOR THE LOCKING REAR DIFFERENTIAL. *TT |
| 020730029A | 2003-02-12. Service bulletin. POWER TRAIN. NEW POWERTRAIN QUALITY CENTER FOR ENGINE AND TRANSMISSION ASSEMBLY REPLACEMENT. *TT |
| 020730024A | 2002-10-11. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT. DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE. *TT 2006 AND PRIOR CARS AND LIGHT DUTY TRUCKS. *TT |
| 020730001A | 2002-03-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. DIAGNOSTIC INFORMATION ON DIAGNOSTIC TROUBLE CODE P1870, TRANSMISSION COMPONENT SLIPPING FOR 2000 - 2002 PASSENGER CARS AND LIGHT DUTY TRUCKS. *TT UPDATE TO INCLUDE 2004 MODELS. *TT UPDATED *EH |
| 010730042 | 2002-03-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SOME VEHICLES MAY EXHIBIT A CLUNK NOISE THAT CAN BE HEARD ON A 2-3 UPSHIFT ON 2002 AND PRIOR LIGHT DUTY TRUCKS. *TT UPDATE. 2007 AND PRIOR PASSENGER CARS AND LIGHT DUTY TRUCKS. *KB |
| 010730030A | 2002-02-15. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. DIAGNOSTIC INFORMATION ON HARSH 1-2 UPSHIFT. 2001-2002 PASSENGER VEHICLES AND LIGHT DUTY TRUCKS. *YH TO INCLUDE 2003-2006 PASSENGER VEHICLES AND LIGHT DUTY TRUCKS. *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.