Service bulletins for the 2020 Cadillac XT4
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.
758 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| 20NA074 | 2020-06-22. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; EXTERIOR LIGHTING. This technical bulletin provides repair information to correct a customer concern of the front fascia paint chipping at headlamp opening. |
|---|---|
| 19NA269 | 2020-06-22. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. This Technical bulletin provides a service procedure for dealers/technicians on installation of Radio Software Version U148 Over-the-Air Update. |
| 16NA383 | 2020-06-22. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up. |
| PIP5675D | 2020-06-15. Service bulletin. AIR BAGS. This Preliminary information communicates to the dealer that a customer may comment that the MIL light is illuminated. The technician may find P1098 and/or P26BB set current or history. That this may be caused by a software anomaly, and that GM is currently looking into the issue. It provides testing and related direction based on the results. |
| PIT5737A | 2020-06-15. Service bulletin. EQUIPMENT. This Preliminary information communicates an XM service concern of no audio at startup until a channel change and directs to contact XM for direct support. |
| PIE0564 | 2020-06-01. Service bulletin. SERVICE BRAKES. This engineering information (EI) bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards a brake fluid leak being detected with DTC C2A22 Symptom 00 Set. |
| PI0281H | 2020-06-01. Service bulletin. STRUCTURE:BODY; EQUIPMENT ADAPTIVE/MOBILITY. This preliminary informational bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers. |
| 060089029R | 2020-06-01. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This informational bulletin includes information on Interior Cleaning - Instrument Panel (IP), Hard or Plastic Surfaces, Seats, Carpet, Leather, Vinyl, Fabric Cleaner, Stain Remover, Restorer - Product Availability. |
| 060089029Q | 2020-06-01. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin provides information on interior cleaning products and what is offered to clean the interiors of GM vehicles. |
| 000310003Z | 2020-06-01. Service bulletin. TIRES; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty Program (U.S. Dealers Only). |
| 20NA088 | 2020-05-26. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY:SOLENOID; ENGINE; ELECTRICAL SYSTEM. This technical bulletin provides a diagnostic procedure to correct a condition of Vehicle Will Not Start and/or Starter Inoperative or Not Disengaging. |
| 20NA087 | 2020-05-26. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of Blank Radio Display or No Audio. |
| 20NA086 | 2020-05-26. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER. This informational bulletin provides information about a GDS2 error message being on due to connector being swapped during reassembly. |
| 20NA002 | 2020-05-26. Service bulletin. SERVICE BRAKES. This technical bulletin provides a procedure to correct a condition of front brake squeal noise. |
| 19NA076 | 2020-05-26. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of Blue Screen and Service Rear Vision System Message on Radio Display. |
| PIE0559 | 2020-05-04. Service bulletin. ENGINE. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to engine oil found under their vehicle. |
| 990089019S | 2020-04-27. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provides information on Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program Information. |
| 100089005I | 2020-04-27. Service bulletin. EQUIPMENT:ELECTRICAL. This warranty administration bulletin explains to the technician that when using wiring repair labor operations, additional information may be needed when submitting Global Warranty transactions when doing wiring repairs. |
| 070089037O | 2020-04-27. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provides policy information for courtesy transportation and roadside assistance programs. |
| 060089029P | 2020-04-27. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin provides information on interior cleaning products and what is offered to clean the interiors of GM vehicles. |
| 060089026P | 2020-04-27. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provides information on Warranty Administration ? Customer Concern Not Duplicated (CCND) Labor Operation Numbers. |
| 050310020G | 2020-04-27. Service bulletin. TIRES. This informational bulletin provides information for dealers/technicians on Use of Nitrogen Gas in Tires. |
| 020089002S | 2020-04-27. Service bulletin. EQUIPMENT. This informational bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. Dealers Only). |
| 20NA072 | 2020-04-27. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This technical bulletin provides repair information to correct a customer concern of Instrument Cluster Distance to Empty May Be Missing a Digit. |
| 20NA067 | 2020-04-27. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin provides information for dealers/technicians on Accessory Rear Seat Infotainment (RSI) Shuts Off, Coinciding with Closing of Door or Liftgate. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.