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Service bulletin PI1448B

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 id10190565
Published by NHTSA2021-04-26
Manufacturer's numberPI1448B
Manufacturer's date2015-12-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:GEARS; POWER TRAIN:MANUAL TRANSMISSION:COLUMN SHIFT ASSEMBLY; POWER TRAIN:MANUAL TRANSMISSION:FLOOR SHIFT ASSEMBLY

NHTSA's summary

Service Transmission Light Flashing and/or Malfunction Indicator Lamp (MIL) On and DTC P0705 Set Some customers may comment on a malfunction indicator lamp (MIL) on or that the Service Transmission light is flashing. Customers may also comment that the shifter does not seem to shift correctly into each range. The technician may find DTC P0705 set or in history in the TCM

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

Transmission and driveline, Automatic transmission, Manual transmission

Trouble codes named

P0705

Vehicles listed
CADILLAC CTS2014, 2015

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

Recalls for the same vehicles and component
14V3380002014-06-19. POWER TRAIN:AUTOMATIC TRANSMISSION

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
141792023-12-18. Service bulletin. Transmission Shift Cable
17-NA-0662023-07-25. Service bulletin. This service bulletin provides information for automatic transmission Oil Cooler Flush and flow test.
16-NA-1302023-03-08. Service bulletin. This service bulletin provides information for after installation of a replacement upper valve body, the transmission may have no Reverse and no 2nd gear.
PIP5621C2022-10-17. Service bulletin. This Preliminary information communicates to the dealer technician that TAC recommends the utilization of the GDS2 software to aid in diagnosing automatic transmission concerns. TAC is requesting the GDS2 session logs be sent in before the dealer contacts TAC.
183692022-05-31. Service bulletin. Special Coverage. Some vehicles equipped with a 2.0L turbo engine, may have a condition where a wire within the exhaust camshaft position actuator solenoid valve may break. If this were to occur, the Malfunction Indicator Lamp would illuminate, and a diagnostic trouble code DTC P0013 (Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit) would set. The driver may experience rough engine idling or reduced engine torque/power. Dealers are to replace the exhaust camshaft position actuator solenoid valve as necessary. The repairs will be made at no charge to the customer.
15-NA-0832021-09-07. Service bulletin. Recovery Process from a Controller Reprogramming Interruption
06-00-89-031D2021-09-07. Service bulletin. OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification
990420002L2021-08-09. Service bulletin. This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation.
06-00-89-031D2021-04-20. Service bulletin. OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification
15-NA-0832021-04-20. Service bulletin. Recovery Process from a Controller Reprogramming Interruption During service reprogramming of the T87 TCM, some technicians may notice the TCM may fail during the reprogramming event and become unresponsive to the Service Programming System (SPS), unresponsive to the GDS2 tool. This bulletin addresses corrective actions to attempt to recover the module before declaring the TCM as a bad part and replacing. During reprogramming, an interruption can cause the module to lock up. A module reset may recover the TCM