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Home >> Chevrolet >> 2012 >> Cruze Eco, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 124 (Manual Transmission - Mu3) >> Description and Operation >> Definition of Terms >> Shift Control Related

Shift Control Related

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
Binding

A shift condition where a driver feels resistance/light friction when shifting into gear.

Cold gear clash

A grinding/growling sound that is made when attempting to shift into gear during cold conditions.

Double bump

A shift condition where a driver experiences 2 separate peak loads when shifting into gear.

Gear clash/grinding

A grinding/growling sound that is made when attempting to shift into gear. Usually caused by a worn blocking ring or blocking ring spring.

Gear rattle

A rattle that usually occurs at engine lugging conditions or low idle speeds with the transaxle in neutral and the clutch engaged.

Hard shift (dynamic/engine running)

Difficulty in shifting when the vehicle is in motion.

Hard shift (static/engine off)

Difficulty in shifting when the vehicle is not moving.

Hop-out

A condition where the transaxle will consistently disengage from the gear without operator assistance.

Intermittent hop-out

A condition where the transaxle will periodically disengage from the gear without operator assistance.

Spline lock

A "scallop" feature machined alternately in the internal spline of the synchronizer sleeve designed to engage with the gear (clutch teeth) to prevent hop-out.