2016 Buick Regal Service and Repair Manual

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Factory-Grade Data

2016 Buick Regal 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.

Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical coverage with wiring diagrams
  • Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more

Trims covered

  • Premium Sedan 4-Door
  • Base Sedan 4-Door
  • GS Sedan 4-Door
  • Sport Touring Sedan 4-Door

Engines covered

  • 2.0L 1998CC 122Cu. In. l4 GAS DOHC Turbocharged
  • 2.4L 2384CC 145Cu. In. l4 MILD HYBRID EV-GAS (MHEV) DOHC Naturally Aspirated
  • 2.4L 2384CC 145Cu. In. l4 GAS DOHC Naturally Aspirated
  • 2.4L 2384CC 145Cu. In. l4 FLEX 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

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Vehicle Safety Data

2016 Buick Regal Recalls & Complaints

NHTSA #16V10800024/02/2016Component: STEERING:ELECTRIC POWER ASSIST SYSTEM

General Motors LLC (GM) is recalling certain model year 2016 Buick Regal Vehicles manufactured August 30, 2015, to February 12, 2016. The affected vehicles have a power-steering assist system that ma

Consequence

A loss of power steering assist may increase the risk of a crash.

Remedy

GM will notify owners, and dealers will replace the electric belt drive rack and pinion steering gea

TSB #11030974

This preliminary information communicates information about how to determine if a wheel and tires size change is available.

TSB #11030092

This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.

TSB #11030091

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

TSB #11027601

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

TSB #11026104

This service bulletin provides information on Tire Sidewall Irregularities.

TSB #11026017

This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.

TSB #11025755

This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customers vehicles that exhibit vibration conditions without utilizing the s

TSB #11024485

The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.

Showing the 8 most recent of 1209 technical service bulletins on file with NHTSA.

20220131Component: STRUCTURE:BODY1 injured

Interior Chrome Driver Door Handle: The chrome film splits which caused a sharp edge on the edge of the chrome film of the door handle. I cut the edge of my finger on this sharp edge. When I took m

20250618Component: ENGINE

My Buick stops when driving unknown when it’s a surprise lights and dash go off almost got hit took to mechanics it’s the 2016-17 “throw away motor” ad they call it does not last and gets”me

20250618Component: VEHICLE SPEED CONTROL

My Buick stops when driving unknown when it’s a surprise lights and dash go off almost got hit took to mechanics it’s the 2016-17 “throw away motor” ad they call it does not last and gets”me

20250618Component: WHEELS

My Buick stops when driving unknown when it’s a surprise lights and dash go off almost got hit took to mechanics it’s the 2016-17 “throw away motor” ad they call it does not last and gets”me

20250212Component: STEERING

My steering failed and started pulling left into traffic. It was hard to keep it in my lane. Had to have it towed by AAA. Took to my mechanic and he said it was the electric belt drive rack &pinion st

Showing the 5 most serious of 61 complaints filed with NHTSA.

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