2012 Buick VeranoFACTORY OEM SERVICE PROCEDURE

Knock Sensor Replacement

Fig 1: Knock Sensor & Bolt
GM2557055Courtesy of GENERAL MOTORS COMPANY
Knock Sensor Replacement

Callout Component Name

Preliminary Procedures

  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the front compartment insulator. Refer to Front Compartment Insulator Replacement .
  3. Disconnect the knock sensor wiring harness plug.
1 Knock Sensor Bolt
CAUTION:

Refer to Fastener Caution .


TightenΒ 
10 N.m (89 lb in)
2 Knock Sensor
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.