Ignition System Specifications

2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Ignition System Specifications
WARNING: This page is about a different variant/trim than selected.
Application Specification
Metric English
Ignition Type Coil-On-Plug
Firing Order 1-3-4-2
Spark Plug Type GM P/N 12590701
Spark Plug Torque 17-23 N.m 12.5-17 lb ft
Spark Plug Gap 0.9-0.75 mm 0.035-0.030 in
RENDER: 1.0x

NO RELATED

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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.