Here is something I found, it may be nothing, but worth looking at.
2007 Chevrolet Equinox Electrical System TSBs
TSB Number: 070847004
NHTSA Number: 10022963
TSB Date: August 1, 2007
Date Added to File: October 9, 2007
Failing Component:Electrical System
Summary:Information on body control module (bcm) grounds.
Also, from the NHTSA Site for item# 1022963 -
Report Date : February 16, 2011 at 06:48 PM
NHTSA Item Number : 10022963
Results : 1 | All records displayed
Make / Models : Model/Build Years :
BUICK / ENCLAVE 2008
BUICK / LUCERNE 2006-2008
CADILLAC / CTS 2008
CADILLAC / DTS 2006-2008
CADILLAC / ESCALADE 2006-2008
CADILLAC / SRX 2006-2008
CHEVROLET / AVALANCHE 1500 2007-2008
CHEVROLET / AVALANCHE 2500 2007
CHEVROLET / EQUINOX 2007-2008
CHEVROLET / IMPALA 2006-2008
CHEVROLET / MONTE CARLO 2006-2007
CHEVROLET / SILVERADO 2007
CHEVROLET / SILVERADO 1500 2008
CHEVROLET / SILVERADO 2500 2008
CHEVROLET / SILVERADO 3500 2008
CHEVROLET / SUBURBAN 1500 2007-2008
CHEVROLET / SUBURBAN 2500 2007-2008
CHEVROLET / TAHOE 2007-2008
GMC / ACADIA 2007-2008
GMC / SIERRA 2008
GMC / SIERRA 1500 2007
GMC / SIERRA 2500 2007
GMC / SIERRA 3500 2007
GMC / YUKON 2007-2008
PONTIAC / TORRENT 2007-2008
SATURN / OUTLOOK 2007-2008
SATURN / VUE 2008
Manufacturer : GENERAL MOTORS CORP.
Service Bulletin Number : 070847004 Date of Bulletin : AUG 01, 2007
NHTSA Item Number : 10022963
Component : ELECTRICAL SYSTEM
So, take a look and ask your dealer....