P2135 on the 2003 Hummer H2
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.
Nobody has written a description of this code yet.
| 3089 | 2004-10-04. Service bulletin. SERVICE ENGINE SOON LIGHT AND REDUCED ENGINE POWER WITH A DIAGNOSTIC TROUBLE CODE P1516. DIAGNOSTIC TROUBLE CODES P0120, P0220, P1514, P1515, P1518 AND P2135 MAY ALSO BE PRESENT. *TT |
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| 030604062 | 2004-03-03. Service bulletin. THIS BULLETIN IS BEING ISSUED TO REVISE STEP 4 OF DIAGNOSTIC TROUBLE CODE (DTC) P2135. *TT |
2 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.