This bulletin applies to 2016-2018 Cadillac CTS-V and 2015-2018 Escalade vehicles equipped with a 6.2L LT4 or L86 engine. The SES lamp may be on, with DTC P0333 when shifting the transmission from the park position. This DTC can be set due to voltage from the transmission park/neutral signal 1 circuit bleeding into the knock sensor system circuits. If service manual diagnostics do not isolate the problem, inspect the K20 ECM connector X2 looking for debris, connector or terminal concerns.
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Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety ofspecialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.
