Service bulletin PIP5366B

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	10126922
Published by NHTSA	2018-01-16
Manufacturer's number	PIP5366B
Manufacturer's date	2017-12-04
NHTSA component	VEHICLE SPEED CONTROL:ACCELERATOR PEDAL

NHTSA's summary

This Preliminary Information communication provides information to the technician that some owners may notice at roughly 3/4 of the way through the accelerator pedal travel there is a click felt in the pedal also the pedal gets harder to push. Please communicate to the customer this condition is a normal operating characteristic of their vehicle.

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

Throttle and cruise control

Vehicles listed
BUICK LACROSSE	2017, 2018
BUICK REGAL	2018
CADILLAC XT5	2017, 2018
CHEVROLET MALIBU	2016, 2017, 2018

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
10-08-110-001L	2025-02-11. Service bulletin. This service bulletin provides information on proper use of floor mats.
PIC6014A	2023-04-17. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that may have the door locks will unlock immediately after auto locking usually at startup or while driving. Technician will need to remove power from the Sensing and Diagnostic Module. If doors no longer unlock unwanted the Sensing and Diagnostic Module should be replaced.
PIT5606J	2021-02-16. Service bulletin. This Preliminary information communicates an Intermittent No Crank, No Start, or Reduced Power loss of data multiple U codes or Intermittent Power Door Locks inoperative, unwanted seat or mirror movement. Inspect harness for chaffed by the I-shaft at the base of the steering column. If chaffed, repair damaged wires and zip tie the harness away from the I-shaft. Also Inspect the HVAC drain hose is properly routed and not plugged.
PIT5606J	2021-01-25. Service bulletin. This Preliminary information communicates an Intermittent No Crank, No Start, or Reduced Power loss of data multiple U codes or Intermittent Power Door Locks inoperative, unwanted seat or mirror movement. Inspect harness for chaffed by the I-shaft at the base of the steering column. If chaffed, repair damaged wires and zip tie the harness away from the I-shaft. Also Inspect the HVAC drain hose is properly routed and not plugged.
N182188250 02	2020-07-20. Service bulletin. Special Coverage Adjustment - Certain 2016-2018 model year Chevrolet Malibu, 2017-2018 model year Buick LaCrosse, and 2018 model year Buick Regal vehicles may have a condition which affects the electrical connection to one of the vehicle?s accelerator pedal position sensors. If this electrical connection is interrupted, the accelerator pedal will still function, but the vehicle will enter a reduced engine power mode in which the vehicle?s maximum acceleration and torque are reduced. Additionally, the Malfunction Indicator Light (Check Engine Light) will illuminate, the ?Engine Power is Reduced? message will display, and a diagnostic trouble code for Accelerator Pedal Position Sensor Correlation (P2138) will be set when this condition occurs. Dealers are to replace the accelerator pedal and position sensor assembly as necessary and repair the engine wire harness (Malibu LFV only). The repairs will be made at no charge to the customer.
N182188250	2019-09-30. Service bulletin. Certain 2016-2018 model year Chevrolet Malibu, 2017-2018 model year Buick LaCrosse, and 2018 model year Buick Regal vehicles may have a condition which affects the electrical connection to one of the vehicle?s accelerator pedal position sensors. If this electrical connection is interrupted, the accelerator pedal will still function, but the vehicle will enter a reduced engine power mode in which the vehicle?s maximum acceleration and torque are reduced. Additionally, the Malfunction Indicator Light (Check Engine Light) will illuminate, the ?Engine Power is Reduced? message will display, and a diagnostic trouble code for Accelerator Pedal Position Sensor Correlation (P2138) will be set when this condition occurs. Dealers are to replace the accelerator pedal and position sensor assembly as necessary and repair the engine wire harness (Malibu LFV only). The repairs will be made at no charge to the customer.
PIT5569A	2019-08-12. Service bulletin. This Preliminary information communicates direction and examples when diagnosing multiple DTCs, one of which includes U**** Byte 71 DTC.
PIC6265D	2018-12-17. Service bulletin. This Preliminary information communicates that a vehicle may exhibit a Adaptive Cruise Control Unavailable and/or Lane Keep Assist Unavailable message. The technician may attempt to program the Active Safety Control Module (ASCM) and encounter a code E4399. The technician is advised if he encounters this concern to zero the MIC counter by placing the vehicle into and back out of "Transport Mode".
17-NA-083	2018-05-21. Service bulletin. This technical bulletin provides a procedure to perform an update on the Radar Sensor Module to reduce possibilities of the Adaptive Cruise Control not working when there are no objects detected.
PIP5557	2018-03-12. Service bulletin. This Preliminary information communicates the Control Valve Body spacer plate orifice #33 may be restricted as root cause for themay not go above 30 mph, may be stuck in 2nd gear, will not upshift, MIL is on, and/or DTC P2821 concern,to replace the plate as necessary.