21-NA-268

Service Bulletin
Bulletin No.:
21-NA-268
Date:
May, 2023
INFORMATION
Subject:
Information on Crank No Start or Extended Crank, Malfunction Indicator Lamp (MIL)
Illuminated - DTC P0014, P0017, P0365 and/or P0366 Set
Brand:
Model:
Buick
Encore
Chevrolet
GMC
Holden
Model Year:
from
to
2016
2019
VIN:
from
to
Engine:
(1.4L, 1.5L)
Transmission:
LE2
Cruze
2016
2019
Cruze (VIN II Gen B)
2016
2019
Equinox
2018
2021
LYX
Malibu
2016
2021
LFV
Spark
2016
2021
Trax
2019
2021
LE2
LE2
—
—
LV7
Terrain
2018
2021
LYX
Equinox
2018
2020
LYX
Astra Sedan NB4
2017
2018
Astra-K Hatch HB5
and Wagon
2017
2020
—
LE2
Involved Region or Country
North America, Middle East, Iraq, Israel, Palestine, Argentina, Brazil, Chile, Colombia,
Ecuador, Paraguay, Peru, Uruguay, Australia/New Zealand, Venezuela, GM Korea
Company, China, Thailand, Singapore, Egypt, Other Africa
Condition
Some customers may comment on one or more of the following conditions:
• Crank no start
• Extended crank
• MIL illuminated
Technicians may find one or more of the following DTCs set in the Engine Control
Module:
• P0014
• P0017
• P0365
• P0366
Cause
This condition may be caused by exhaust camshaft reluctor out of phase.
Copyright 2023 General Motors LLC. All Rights Reserved.
Page 2
May, 2023
Bulletin No.: 21-NA-268
Complete latest diagnostics in Service Information (SI) for Engine Cranks But Does
Not Run.
If unable to determine the root cause of no start condition using published SI diagnostics,
proceed with the following steps:
⇒ Remove the cam cover assembly and perform steps below to confirm
exhaust camshaft reluctor orientation.
Information
5921667
⇒ During disassembly, the vacuum pump drive lugs should also be inspected
for damage (Photo above shows damaged vacuum pump drive lugs).
5921669
⇒ Rotate the exhaust camshaft to position the 2D matrix marking on the
camshaft hex in the 12’ o'clock position (Reference the graphic above for 2D
marking).
Bulletin No.: 21-NA-268
May, 2023
Page 3
5921666
⇒ Once the exhaust camshaft 2D matrix has been positioned at 12’ o'clock,
verify the small tang located on the camshaft reluctor ring (Arrows below
showing tang on reluctor) is in-line with the 2D matrix marking.
Important: If the reluctor is out of phase, inspect the exhaust camshaft position actuator
dowel pin for damage..
5921670
Also shown are additional reference points used to verify exhaust cam reluctor orientation
to camshaft.
Proper relationship between the 2D matrix marking and the small tang on exhaust cam
reluctor wheel.
If you find the vacuum pump drive lugs are broken and/or the exhaust camshaft reluctor is
out of position, then replacement of the exhaust camshaft and vacuum pump will be
required.
Note: If needed, It will also be necessary to locate and remove the broken vacuum pump
drive lugs and other metal debris during repairs.
Page 4
May, 2023
Bulletin No.: 21-NA-268
Important: Service agents must comply with all
International, Federal, State, Provincial, and/or
Local laws applicable to the activities it performs
under this bulletin, including but not limited to
handling, deploying, preparing, classifying,
packaging, marking, labeling, and shipping
dangerous goods. In the event of a conflict between
the procedures set forth in this bulletin and the
laws that apply to your dealership, you must follow
those applicable laws.
Version
2
Modified
Released November 16, 2021
Revised April 27, 2023 - Added an Important statement to the Information section.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these
technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper
service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a
job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your
vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.
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