Service bulletins for the 2004 Chevrolet Aveo
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.
409 on file from NHTSA, as of 2026-10-19.
About P1781 on the 2004 Chevrolet Aveo: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P1781 are shown. Show all
| 050601030 | 2005-12-02. Service bulletin. ENGINE AND ENGINE COOLING. 1.6L L91 INTERMITTENT MISFIRE COLD DURING DECELERATION OR STEADY STATE HIGHWAY DRIVING AFTER COLD START WITH DTC'S P0300, P0700, P1781 AND/OR U0401 SET (REPLACE VALVES AND VALVE STEM SEALS) *TT UPDATED 11/02/07 *NJ |
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| 3064 | 2005-01-27. Service bulletin. ENGINE AND ENGINE COOLING. SERVICE ENGINE SOON LIGHT ENGINE MISFIRE AND P1781 DIAGNOSTIC TROUBLE CODE. *EH |
| 3064 | 2004-10-08. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON LIGHT AND ROUGH RUNNING WITH DIAGNOSTIC TROUBLE CODES P0700, P1781 AND POSSIBLY A P0300. *TT |
| 01575 | 2004-02-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. DIAGNOSTIC TROUBLE CODE (DTC) P1781 DIAGNOSTIC IS NOT IN SI YET. POOR FUEL ECONOMY AND/OR HARSH TRANSMISSION SHIFTS. SIT BULLETIN 1413084. *MN |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.