Manufacturer communication — 2006 GMC YUKON DENALI XL

• Applies to all models, 2000 - 2021.

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  All All 2000 - 2021

Steps to confirm (in the document’s order)

1. Before disassembly and before calling Technical Assistance, get a sound/video file of an unusual noise that is hard to identify, isolate or pinpoint.

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   When working with a vehicle that has an unusual noise and is diÞcult to identify, isolate or pinpoint, we would request that prior to dis-assembly for this concern you get a sound/video Õle of the noise prior to calling Technical Assistance.

2. Place the PicoScope accelerometer sensor nearest to where the noise seems to come from; moving the sensor and recording again may isolate the area better.

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   1) Place the PicoScope accelerometer sensor nearest to where the noise appears to be coming from. Moving the sensor and getting another recording may help to isolate the area better.

3. In setup, select the TA148 Interface in the "Box" dropdown and the TA144 Microphone in the "Sensor" dropdown.

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   Select TA148 Interface in the “Box” dropdown and TA144 Microphone for the “Sensor” Drop down.

Caution

• Keep the cable routed away from the exhaust when working in the engine compartment, and away from moving parts when working under the vehicle.

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  Note: Ensure to keep the cable routed away from the exhaust if working in the engine compartment or moving parts if working under the vehicle.