This is one of those "Follow The Pro Mechanic...While He Scratches His Head in Wonder..." sort of Bird's Eye View Type Case Studies where the Mechanic audibles his "Angry Customer Returns" issues over a VERY hard to locate cause of a P0455 Code hiding somewhere within a *** 2004 Trailblazer.
There are a LOT of Good Procedural Diagnostic Steps that the VOP (Video Original Poster) covers here in this contemporary event (12/01/2021) that is very instructive and well worth remembering for any GM and GMC Vehicles Owners facing this problem:
*** THIS Trailblazer is definitely NOT from anywhere near "The Rust Belt" of North America. :>)
Now set the Way-Back Machine to 11/27/2021 to the FIRST incident which caused the Customer to bring in the vehicle BACK for Service & Repair...by the very SAME "Pro" Mechanic:
There are a LOT of Good Procedural Diagnostic Steps that the VOP (Video Original Poster) covers here in this contemporary event (12/01/2021) that is very instructive and well worth remembering for any GM and GMC Vehicles Owners facing this problem:
*** THIS Trailblazer is definitely NOT from anywhere near "The Rust Belt" of North America. :>)
Now set the Way-Back Machine to 11/27/2021 to the FIRST incident which caused the Customer to bring in the vehicle BACK for Service & Repair...by the very SAME "Pro" Mechanic:
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