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Service bulletin PIT5437B

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)
TypeService bulletin
NHTSA id10115109
Published by NHTSA2017-08-15
Manufacturer's numberPIT5437B
Manufacturer's date2015-11-09
NHTSA componentPOWER TRAIN; STEERING

NHTSA's summary

This Preliminary Information communication provides information to the technician about vehicles that have Service Power Steering message on the Driver Information Center. If Diagnostic Trouble Code C056D is stored a Service Programming System update to the Power Steering Control Module will fix the concern. If Diagnostic Trouble Code C0545 is stored replacement of the power steering gear assembly will fix the concern.

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

Steering, Transmission and driveline

Trouble codes named

C0545, C056D

Vehicles listed
CHEVROLET COLORADO2015
GMC CANYON2015

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

Recalls for the same vehicles and component
20211812021-03-25. Steering
21V2130002021-03-25. STEERING:ELECTRIC POWER ASSIST SYSTEM
16V0540002016-02-01. STEERING:ELECTRIC POWER ASSIST SYSTEM
20160432016-01-28. Steering

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
PI0281L2025-06-12. Service bulletin. This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
25-NA-0652025-04-24. Service bulletin. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
16-NA-1092025-02-28. Service bulletin. This service bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear.
PIP5175F2025-02-10. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that may have a delayed engagement into drive, shudder at a launch, or the transmission is slipping when shifting into 1st, 2nd, 3rd or 4th gears. This may be due to loose stator support to pump cover bolts causing a leak at the stator support to pump cover gasket. Technician will check for the bolts to be loose. If any of the bolts are loose or the gasket is misaligned or leaking, the transmission pump cover must be replaced and the 1234 clutch plates should be inspected for being distressed and repaired as needed.
09-06-04-026Z2025-01-23. Service bulletin. This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
08-07-30-035I2024-12-19. Service bulletin. This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
04-06-01-029K2024-12-04. Service bulletin. This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
20-NA-1382024-11-05. Service bulletin. This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.
08-07-30-026I2024-10-24. Service bulletin. This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.
23-NA-1422024-10-17. Service bulletin. This technical bulletin provides a procedure for the techs to replace the forward check ball and separator plate if found the cause of the customers concern of No Forward Gear When Shifting from Park to Drive and/or Reverse to Drive.