By Leftlane Staff
Friday, Aug 4th, 2006 @ 11:18 am

Earlier today, we brought you spy shots of a GM heavy duty pickup in testing. But we’ve since found some photos of GM’s new heavy duty line sans disguise. At its press conference for the 2007 Chevrolet Silverado and GMC Sierra, General Motors also had the yet-to-be-announced pickups on hand. The trucks appeared in the background as GM CEO Rick Wagoner and other executives talked about the new Sierra and Silverado. The heavy duty trucks are distinguished by its full metal bumper and beefier looks. A red Sierra 3500 (1-ton) was also on hand. Gallery after the jump…

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