This can very well be the issue.
There has been a service bulletin for that type of concern. Here is what it states.
Bulletin No.: 03-03-08-002B
Date: November 30, 2005
Rattle/Squeak from Front of Vehicle (Replace Lower Portion of Upper Insulator Assembly)
2002-2005 Cadillac Escalade, Escalade EXT
2003-2005 Cadillac Escalade ESV
2000-2005 Chevrolet Silverado, Suburban, Tahoe
2002-2005 Chevrolet Avalanche
2000-2005 GMC Sierra, Yukon, Yukon XL
This bulletin is being revised to update the correction and parts information. Please discard Corporate Bulletin Number 03-03-08-002A (Section 03 - Suspension).
Some customers may comment on a rattle or squeak type noise coming from the front of the vehicle.
The front shock absorber plastic pilot ring may be wearing out, causing the shock to misalign in the insulator.
DO NOT replace the shock. Replace the lower portion, P/N 15834275 , of the upper insulator assembly using the procedure listed below. This new insulator has a taller plastic pilot ring that is attached to the metal sleeve to aid in the proper alignment of the insulators.
1. Remove the front shock absorber. Refer to the Shock Absorber Replacement procedure in the Front Suspension sub-section of the Service Manual.ClickHere
I would check this next . Hoped this helped. Positive feedback and bonuses greatly appreciated.