Service bulletins for the 2008 Chevrolet Cobalt
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.
957 on file from NHTSA, as of 2026-10-19.
About P2138 on the 2008 Chevrolet Cobalt: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P2138 are shown. Show all
| 070604019F | 2018-06-04. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This technical bulletin provides repair information for repairing the IP to body harness connector to correct a customer concern for intermittent Malfunction Indicator Lamp (MIL) illuminated with Reduced Engine Power displayed and DTC P2138 set. |
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| 07-06-04-019E | 2017-08-15. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This technical bulletin provides repair information for repairing the IP to body harness connector to correct a customer concern for intermittent Malfunction Indicator Lamp (MIL) illuminated with Reduced Engine Power displayed and DTC P2138 set. |
| 4175 | 2007-08-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INTERMITTENT SES LIGHT DUE TO DTC'S P060E, P2135, AND/OR P2138. *KB UPDATED 2/27/08. *NJ |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.