Information to Avoid Damaging EVAP Canister and Setting DTCs P0442/P0455 When Hoisting Vehicle

This bulletin is being revised to provide a reference picture. Please discard Corporate Bulletin Number 05-06-04-004C (Section 06 - Engine).

A review of warranty repair orders and parts returned to GM for analysis suggests that EVAP canisters are being damaged when the vehicle is being put up on a hoist for service.

Incorrect placement of the hoist pads may cause a crack/leak in the EVAP canister plastic and eventually set one or both of the following DTCs:

To avoid this situation, particularly when using the type of hoist where the arms swing in and the pick up pads swivel, be sure of the placement of the pick up pads. If the pick up pads are not positioned correctly to the underbody pick up areas, this type of damage may occur.