Chevrolet Equinox Service Manual: #08-07-30-026B: Information on Slight Vehicle Movement in Park at Start Up After Cold Soak - (May 23, 2013)

This bulletin is being revised to add the 2013 and 2014 model years. Customer Informationhas also been added. Please discard Corporate Bulletin Number 08-07-30-026A.

Some vehicles may rock or move slightly forward or rearward while in Park at startup after cold soak. This condition may be accompanied by a clunk noise. This is aslight movement that is more often seen visually, rather than felt, when viewed fromthe outside and using the auto-start feature, if equipped.

This slight movement is due to the residual transmission fluid in the clutch packsthat creates a partial apply on start up. This movement is stopped by the parkingpawl and/or transmission fluid exhausting completely from the clutch packs.

This condition is normal and no repairs should be attempted. This can be verifiedby comparing with another identically built vehicle under the same cold conditions.

Please communicate to the customer this condition is a normal operating characteristicof the vehicle. This slight movement has no adverse affects on the transmission. Toprevent this condition from occurring, the parking brake should be utilized as perthe Owner's Manual recommendations anytime the vehicle is parked. Please share thisinformation with the customer including a copy of this message.