U1000 on the 2004 GMC Sierra
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.
| 020730011 | 2005-02-15. Service bulletin. SLOW OR NO ENGAGEMENT OF AUTOMATIC TRANSMISSION NO START BLANK PRNDL DISPLAY FLASHING PRNDL DIAGNOSTIC TROUBLE CODE P0708 P0872 P0847 P0875 P1711 P1713 OR U1000 SET. THIS SERVICE BULLETIN REPLACES 020730011. *EH |
|---|---|
| 01267F | 2004-07-06. Service bulletin. SERVICE 4WD LIGHT ON NO CODES BESIDES U1000 CODES OR C0550. *MJ |
| 01267B | 2003-11-21. Service bulletin. SERVICE 4WD LIGHT ON NO CODES BESIDES U1000 CODES. SERVICE VME. *TT |
| 01267A | 2003-11-19. Service bulletin. SERVICE 4WD LIGHT ON, THE 4WD IS INOPERATIVE AND NO CODES BESIDES U1000 CODES. SERVICE VME. *TT |
4 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.