Some 2010 Equinox and Terrain models equipped with the 4-cylinder engine (VIN W, RPO LAF) may exhibit a detonation/spark knock or rattle noise under light acceleration (1,500 to 1,900 rpm). This condition is present under only partial throttle, light load conditions.
A revised calibration has been released to address this condition. Update the ECM using SPS with the latest software available on TIS2Web.
When reprogramming, be sure to update the scan tool with the latest software version and maintain battery voltage using an approved battery charger/maintainer.
PI0325