20-NA-207

Bulletin No.:
Service Bulletin
Date:
20-NA-207
March, 2022
INFORMATION
Subject:
Information on Malfunction Indicator Lamp (MIL) Illuminated - DTC P0333 Set
This bulletin replaces PIP5576. Please discard PIP5576.
Brand:
Cadillac
Chevrolet
Model:
Model Year:
VIN:
Engine:
Transmission:
All
6.2L (LT4)
All
All
All
6.2L (L86)
All
All
All
6.2L (LT1, LT4)
All
All
from
to
from
to
CTS-V
2016
2019
All
Escalade Models
2015
2020
Camaro
2016
2020
Corvette
2016
2019
All
All
6.2L (LT1,
LT4, LT5)
Silverado
2014
2018
All
All
4.3L, 5.3L, 6.2L
(L83, L8B, L86,
LV1, LV3)
All
Suburban
2015
2020
All
All
5.3L (L83)
All
Tahoe
2015
2020
All
All
5.3L (L83)
All
Sierra
2014
2018
All
All
4.3L, 5.3L, 6.2L
(L83, L86,
LV1, LV3)
All
Yukon Models
2015
2020
All
All
5.3L, 6.2L
(L83, L86)
All
GMC
Involved Region or Country
North America, Europe, Russia, Middle East, Israel, Chile, Colombia, Ecuador,
Venezuela, Japan, GM Korea Company, China, Taiwan, Thailand, Singapore,
Philippines, Other Africa
Condition
Some customers may comment that the MIL is illuminated when shifting the transmission
from Park.
Some technicians may find DTC P0333 (Knock Sensor Circuit High Voltage Bank 2) set
in the Engine Control Module (ECM).
Cause
DTC P0333 can set due to voltage from the transmission park/neutral signal 1 circuit
bleeding into the knock sensor system circuits.
Correction
To correct this condition, follow service information for diagnostic code P0333. If service
information does not isolate the concern, then inspect the K20 ECM X2 electrical
connector for debris, connector and/or terminal concerns.
Version
2
Modified
Released October 06, 2020
Revised March 03, 2022 - Updated Model Years to 2019–2020.
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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