Service bulletin PIT4648D

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	10112505
Published by NHTSA	2017-08-15
Manufacturer's number	PIT4648D
Manufacturer's date	2012-10-22
NHTSA component	ELECTRICAL SYSTEM:WIRING; SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR

NHTSA's summary

This Preliminary Information communication provides information to the technician about vehicles that have a Antilock Braking System Malfunction Indicator Lamp on and or the service Stability message on. Technician may find Diagnostic Trouble Code C0045 and or C0050 found in the Electronic Brake Control Module. Technician will need to inspect the wires/crimps/terminals at the suspect Wheel Speed Sensor connector.

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

Brakes, Electrical system, Anti-lock brakes, Wheel speed sensor, Wiring and fuses

Trouble codes named

C0045, C0050

Vehicles listed
CHEVROLET EXPRESS	2008, 2009, 2010, 2011, 2012
GMC SAVANA	2008, 2009, 2010, 2011, 2012

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

Recalls for the same vehicles and component
23V247000	2023-04-06. ELECTRICAL SYSTEM:WIRING

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
130089008	2023-12-11. Service bulletin. GM Wiring Repair Strategy Information
PIT5058G	2021-06-14. Service bulletin. This Preliminary Information communication provides information to the technician about the operation and diagnostics of the Regular Production Option Code UJ1 brake warning pressure warning system. The technician can test the operation of the brake warning system. If the warning system does not function correctly, technician will need to inspect circuit 33 for a short to ground between X141 and the Instrument Panel Cluster terminal 14. Then inspect check circuit 33 for an open between X141 and the Instrument Panel Cluster terminal 14. Also technician should check male side of X141 circuit 33 with an ohm meter to ground and should be close to 0 ohms with engine off and key on. Start engine and circuit should go (OL) indicating that the flow switch opened. Then, turn the steering to the stop in pressure relief and verify that the circuit stays (OL) to check the operation of the pressure switch.
PIT3271J	2019-12-09. Service bulletin. This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.
100089005G	2019-05-13. Service bulletin. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
100089005H	2019-03-18. Service bulletin. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
10-00-89-005C	2018-06-04. Service bulletin. This informational bulletin is a revision for 10-00-89-005B to add the 2014 model year and labor codes.
18NA102	2018-05-21. Service bulletin. This technical bulletin provides a procedure to repair a possible wiring harness repair if damaged by the parking bark, brake booster mount or brake pedal bolt.
10-00-89-005E	2018-05-21. Service bulletin. This warranty administration bulletin adds the 2016 model year to a communication which provides dealership personnel revised wiring repair labor operations and required additional information.
13-00-89-008A	2018-05-07. Service bulletin. This informational bulletin communicates GM wiring repair strategy information.
13-08-116-001	2018-04-16. Service bulletin. This technical bulletin provides a procedure on suspected tampering due to aftermarket ALDL or DLC interface devices causing multiple issues.