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Service bulletins for the 2006 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.

796 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
000601012F2016-10-18. Service bulletin. ENGINE. THIS INFORMATIONAL BULLETIN PROVIDES INFORMATION TO GM DEALERS ON THE CORRECT CLEANING METHODS WHEN CLEANING ENGINE GASKET SEALING SURFACES.
PIP4548F2016-09-23. Service bulletin. ENGINE. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN WHAT TO INSPECT IF CODES P0016 AND/OR P0017 ARE SETTING ON A PROPERLY TIMED ENGINE OR A CONDITION OF THE VEHICLE CRANKS BUT WILL NOT START. TECHNICIAN SHOULD INSPECT THE RESPECTIVE INTAKE OR EXHAUST CAMSHAFT RELUCTOR TO SEE IF IT HAS SPUN ON THE CAMSHAFT. THE RELUCTOR CANNOT BE REPOSITIONED SO THE CAMSHAFT MUST BE REPLACED. THE NEW CAMSHAFTS COME WITH THE RELUCTOR ALREADY PRESSED ON IN THE CORRECT POSITION.
SB-07132B2011-12-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CADILLAC/CHEVROLET/BUICK: BULLETIN ON REPROGRAMMING PROCEDURES ON ENGINE CONTROL MODULE (ECM) CALIBRATION FOR CERTAIN 2006 CADILLAC, CHEVROLET AND BUICK MODELS. *PE
PIC-54412011-06-27. Service bulletin. STEERING; ENGINE AND ENGINE COOLING:ENGINE. GM: THERE ARE MULTIPLE WARNING LIGHTS ON. THERE IS HARSH SHIFTING, HARD STEERING, AND NO START. THERE MAY BE MULTIPLE TROUBLE CODES STORED. *RM
PIP-4495C2011-06-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. GM: THERE MAY BE NOISE COMING FROM THE CYLINDER HEAD, BECAUSE OF LOW OIL PRESSURE WHICH IS CAUSED BY DEBRIS. *RM
SB-080202010-06-25. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. SATURN CHEVROLET SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SOME 2004-07 SATURN ION RED LINE AND 2005-07 CHEVROLET COBALT SS VEHICLES, EQUIPPED WITH 2.0L 4 CYLINDER (RPO LSJ) ENGINE, MAY HAVE ILLUMINATION OF THE MALFUNCTION INDICATOR LAMP (MAL) AND/OR LACK OF ENGINE POWER. THIS MAY BE CAUSED BY FAILURE OF THE CATALYTIC CONVERTER. *PE
SB-090142010-01-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CHEVROLET SATURN PONTIAC SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SPECIAL COVERAGE ADJUSTMENT, ENGINE CONTROL MODULE, EMISSION RELATED REPROGRAMMING. ENGINE CONTROL MODULES ON CERTAIN VEHICLES MAY RANDOMLY FAIL TO RESPOND TO SINGLE INFORMATION REQUESTS MADE BY AN ON BOARD DIAGNOSTIC (OBD) EMISSION TEST DEVICE, GENERIC SCAN TOOL, OR OTHER AFTERMARKET DEVICES THAT PLUG INTO THE VEHICLE'S DATA LINK CONNECTOR (DLC). CSC LETTER WAS RECEIVED. *PE
41752007-08-15. 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
41102007-08-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; ELECTRICAL SYSTEM. LONG CRANK, ENGINE WILL NOT START. *KB UPDATED 1/30/08. *NJ
42522007-03-23. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; LATCHES/LOCKS/LINKAGES; ENGINE AND ENGINE COOLING:ENGINE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. BUCK WHILE DRIVING, STALL, SES LIGHT, FLASH DOOR LOCKS CYCLE, CD PLAYER SKIP, CLOCK RESET. *KB
0706040032007-03-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. LSJ, L61, LK5, L52, LL8 ENGINE - REDUCED ENGINE POWER, MIL/SES LIGHT, DTC P1516, P2135, P2138. *KB
38592007-01-30. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. LOW OIL PRESSURE - INSPECT OIL FILTER FOR DAMAGE. *KB UPDATED 10/18/07. *NJ
0606040332007-01-24. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE MALFUNCTION INDICATOR LAMP (MIL)/SERVICE ENGINE SOON (SES) LAMP ILLUMINATED WITH DTC P0171. *KB
37592006-05-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SES LIGHT DUE TO P060E DTC - INSPECT CIRCUITS. *TT
0506040732006-03-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CHECK ENGINE LIGHT MALFUNCTION INDICATOR LAMP ILLUMINATED, USUALLY WITHOUT DRIVEABILITY SYMPTOMS, DIAGNOSTIC TROUBLE CODES P0128, P0326, PO420, P0717, P2431 SET ON L61 ENGINE (FOLLOW SI, AND IF NECESSARY, REPROGRAM ENGINE CONTROL MODULE (ECM) WITH NEW SERVICE CALIBRATION). *AK
3646A2006-01-07. Service bulletin. ENGINE AND ENGINE COOLING. SES LIGHT DUE TO DTCS P1516 AND P1682 - ECM CALIBRATION PENDING. *TT
37862006-01-07. Service bulletin. ENGINE AND ENGINE COOLING. NO START AFTER ENGINE HARNESS REPLACEMENT (NON-ABS). *TT
3634A2006-01-06. Service bulletin. ENGINE AND ENGINE COOLING. SES LIGHT DUE TO A P0326 DTC - INSTALL NEW ECM CALIBRATION. *TT
36282006-01-06. Service bulletin. ENGINE AND ENGINE COOLING. P2431 DIAGNOSTIC TROUBLE CODE AFTER ECM REPLACEMENT - INSPECT ECM PART NUMBER. *TT
3562C2006-01-06. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. SERVICE ENGINE SOON LIGHT DUE TO P0420 DIAGNOSTIC TROUBLE CODE ON LOW MILEAGE VEHICLES - UPDATE ECM CALIBRATION. *TT
36422006-01-05. Service bulletin. ENGINE AND ENGINE COOLING. SES LIGHT WITH A P0230 DTC AND NO PERFORMANCE CONCERNS - REPLACE ECM. *TT
36442006-01-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. MOMENTARY SAG ON LIGHT TO MODERATE ACCEL WHEN COLD - VALVE DEPOSITS. *TT
0506010272005-12-02. Service bulletin. ENGINE AND ENGINE COOLING. REVISED CAMSHAFT POSITION ACTUATOR FASTENER INSTALLATION PROCEDURE. *TT
3310D2005-11-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON (SES) LIGHT DUE TO A P0171 - INSPECT AIR INTAKE AND OIL DIPSTICK. *TT
34332005-10-21. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON (SES) LIGHT AND SEVERE ENGINE MISFIRE ON CYLINDERS 1 AND 4 OR CYLINDERS 2 AND 3. *TT UPDATED 08-15-07. *KB

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.