2020 GMC Denali 3.0L Duramax P0016 Code. Oscilloscope Test Proves Timing Was Off

A 2020 GMC Denali 3.0L Duramax came into my shop with a check engine light. Code was P0016 for crankshaft and camshaft correlation. Vehicle had 120,000 miles and they just bought the vehicle from the dealership. From my research for this engine with this code I was not able to really find anything regarding diagnostic. The only way to see if timing was out was to go into the engine and physically look at it. So I did a oscilloscope test before tearing down the engine to get a known bad waveform. At the end of the video I show the good waveform and explain the difference. Knowing the good waveform will help diagnosing this code again in the future for this engine. Hopefully you found this information useful and are able to use this in your own diagnostic procedure of this code for this truck.

Hope You Enjoy and Godspeed ✌️

---------------------------------------------------------------------------------------------------------------------

0:00 - Intro & Customer's Concern
1:41 - Performing Pre-Oscilloscope Test Before Repair
7:06 - Tearing Down Engine
7:42 - Looking At The Timing Chain
10:38 - New Timing Chain Installed
13:07 - An Attempt To Decipher Pre-Oscilloscope Test
14:45 - Putting Everything Back Together
15:07 - Analyzing Pre & Post Oscilloscope Test
18:21 - Good Waveform For Timing
18:50 - Outro

---------------------------------------------------------------------------------------------------------------------

Music in Video

Song: Bam Bam
Artist: Bambi Haze
Link: https://www.epidemicsound.com/track/P...

Outro Song: Quavi
Artist: Azucares
Link: https://www.epidemicsound.com/track/j...

---------------------------------------------------------------------------------------------------------------------
#gmc #timing #technician #engine