Service bulletin PI1426A

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10116862
Published by NHTSA	2017-08-31
Manufacturer's number	PI1426A
Manufacturer's date	2016-02-01
NHTSA component	ELECTRICAL SYSTEM:STARTER ASSEMBLY; ENGINE AND ENGINE COOLING

NHTSA's summary

This preliminary informational bulletin provides Diagnostic Tips for Stop/Start and AutoStop Operation on vehicles that have a conditon of AutoStop mode not engaging and vehicle automaticlly restarts during a autostop event

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Engine, Starter

Vehicles listed
CHEVROLET IMPALA	2015, 2016
CHEVROLET MALIBU	2014, 2015, 2016

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
PIP5598D	2022-12-12. Service bulletin. This Preliminary information communicates the possibility of a crank no start or extended crank condition due to exhaust cam reluctor being out of position.
18029	2018-08-20. Service bulletin. 18029 - Special Coverage. Certain vehicles listed above, may have an inoperative purge solenoid that could lead to excessive fuel vapors entering the combustion chamber from the fuel tank. This condition could result in no start, idle stall, and possible drivability issues such as hesitation. The driver may see a check engine light, and may notice a ticking noise, and variation in idle speed. The driver may experience this condition most immediately after filling up the vehicle with gas or while coming to a stop. This special coverage covers the condition described above for a period of 10 years or 120,000 miles (193,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. Dealers are to inspect for a leak in the solenoid assembly and replace if necessary. The repairs will be made at no charge to the customer.
PIP5180B	2018-03-12. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have hard start, extended crank, or black smoke from the exhaust when starting. Technician will need to perform fuel quality test, spark test, and a compression test. Technician should also install a vacuum gauge prior to cold start and watch needle for signs of a sticking valve.
PIC6229	2017-10-15. Service bulletin. This Preliminary Information communication provides information to the technician is bout vehicles that have a crank but engine does not start. Technician will find Diagnostic Trouble Code P0AFA. Technician will ensure to use published Service Information for any other Diagnostic Trouble Codes that are set in the vehicle. If Diagnostic Trouble Code P0AFA is the only Diagnostic Trouble Code set this could be caused by an internal fault in the high voltage battery, but it will also need to be replaced for this condition.
PIP5191B	2017-10-04. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have a ticking noise on cold start after sitting more than 6 hours. Technician will inspect the oil pump pick-up tube to block seal being compressed. It the seal is compressed replace the seal and retest.
08-07-30-026C	2017-08-15. Service bulletin. This informational bulletin provides information on vehicles may rock or move slightly forward or rearward while in Park at start up after cold soak and that this is considered a normal conditon and no repairs are necessary
14659	2017-02-03. Service bulletin. 14659 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO PERFORM A QUALITY AUDIT ON CERTAIN VEHICLES EQUIPPED WITH A 2.5L ENGINE (LKW). SOME OF THESE VEHICLES MAY BREAK OR CHIP TEETH ON THE FLEX PLATE RING GEAR, LEADING TO A GRINDING NOISE DURING STARTER MOTOR ENGAGEMENT, OR A NO START CONDITION. THE QUALITY AUDIT MUST BE COMPLETED BEFORE VEHICLE DELIVERY (AND IN ADDITION TO NORMAL PRE-DELIVERY INSPECTION ACTIVITIES) TO IDENTIFY VEHICLES WITH THE CONDITION. IF THE CONDITION IS FOUND, DEALERS ARE TO REPLACE THE AUTOMATIC TRANSMISSION FLEX PLATE.
43890	2017-01-23. Service bulletin. 43890 - SERVICE UPDATE. CERTAIN VEHICLES, EQUIPPED WITH STOP/START ENGINE CONTROL OPTION, MAY ILLUMINATE THE MALFUNCTION INDICATOR LAMP (MIL) AND SET DIAGNOSTIC TROUBLE CODES (DTC) P3055 AND P3056. THIS CONDITION COULD RESULT IN REMOTE VEHICLE START BEING INOPERATIVE AND POOR FUEL ECONOMY DUE TO THE STOP/START FEATURE BEING DISABLED. DEALERS WILL REPLACE THE MULTIFUNCTION POWER SUPPLY CONVERTER.