2020 Chevrolet Impala service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Wiring diagrams and electrical sections
- Powertrain, brakes, steering, suspension, HVAC and more
Trims covered
- Premier Sedan 4-Door
- LT Sedan 4-Door
Engines covered
- 3.6L 3564CC 217Cu. In. V6 FLEX DOHC Naturally Aspirated
- 3.6L 3564CC 217Cu. In. V6 GAS DOHC Naturally Aspirated
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
This preliminary information communicates information about how to determine if a wheel and tires size change is available.
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and advises of warranty direction.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This service bulletin provides information on Tire Sidewall Irregularities.
Showing the 8 most recent of 526 technical service bulletins on file with NHTSA.
The contact's friend owned a 2020 Chevrolet Impala E. The contact stated that while her friend was driving at 25 MPH and approaching a curve, he inadvertently lost control of the v
I was in a car accident on June 20, 2023. I was stopped in traffic and was hit in the rear and pushed into the vehicle in front of me. The air bags detonated but did not deploy.
Seatbelt warning and blinkers have no sound warnings and driver side blind spot warning are not working
Seatbelt warning and blinkers have no sound warnings and driver side blind spot warning are not working
Showing the 4 most serious of 23 complaints filed with NHTSA.
