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Service bulletins for the 2014 Chevrolet Sonic

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.

1507 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
SB-00-06-01-026G2016-02-03. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; ENGINE. GENERAL MOTORS: IN SOME VEHICLES AND TRUCKS, WHEN TRANSFERRING INTAKE MANIFOLD TO REPLACE AN ENGINE LONG SERVICE BLOCK, DUE TO INTERNAL DAMAGE, EXTREME CAUTION MUST BE TAKEN FOR COMPONENT DEBRIS VIA BROKEN, BENT OR MISSING INTAKE VALVES. *PE
PI1297B2015-05-08. Service bulletin. ENGINE. GENERAL MOTORS: 2013-2015 BUICK ENCORE, CADILLAC ELR, CHEVROLET CRUZE, SONIC, TRAX, VOLT EQUIPPED WITH 1.4L ENGINE(RPO LUV OR LUU). CONCERN OF A CHIRP NOISE COMING FROM THE ENGINE ONCE VEHICLE HAS WARMED UP. *LJ
14371B2015-05-07. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. GENERAL MOTORS: 2011-2014 CHEVROLET CRUZE CHEVROLET SONIC/ W 1.4L ENGINE(RPO LUJ OR LUV): SOME MODEL VEHICLES MAY EXPERIENCE ENGINE COOLANT LEAK FROM THE WATER PUMP. THIS COULD REDUCE COOLANT PERFORMANCE AND CAUSE OVERHEATING. *LJ SEE DOCUMENT SEARCH BUTTON FOR OWNERS LETTER. *LJ
PI-13662015-01-14. Service bulletin. ENGINE. BUICK/CHEVROLET: DUE TO LOSS OF WASTEGATE PRELOAD, THE MALFUNCTION INDICATOR LAMP IS ILLUMINATED AND DIAGNOSTIC TROUBLE CODE (DTC) P0299 (ENGINE UNDERBOOST) IS SET AND WEAR IN WASTE ACTUATOR ROD END TO PIN JOINT IS NORMAL. MODEL 2013-2015 ENCORE, SONIC, TRAX, 2011-2015 CRUZE. *PE
PIE-02892014-04-10. Service bulletin. ENGINE. SOME MAY COMPLAIN ABOUT REDUCED ENGINE POWER AND/OR A REDUCED ENGINE POWER MESSAGE BEING DISPLAYED ON THE DRIVER INFORMATION CENTER. ENGINEERS NEED TO GATHER THE VEHICLES' INFORMATION PRIOR TO ANY ATTEMPT TO MAKE REPAIRS IN ORDER TO DETERMINE THE CAUSE. *JS
PI-0324-C2012-04-17. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE AND ENGINE COOLING. GMC/CHEVROLET/BUICK: TRANSMISSION PUMP NEEDS INSPECTING DUE TO ENGINE CRANKING BUT FAILS TO START, HAS NO FORWARD, NO REVERSE, TRANSMISSION LEAKS, HARD SHIFT AND NO CRANKING. *PE UPDATED 2/25/13. *PE UPDATED 1/29/2014 *JS

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