Back in 1988, with the introduction of the GMT400 pickup platform, General Motors made a radical change: they introduced an independent front suspension (IFS) for 4×4 trucks, which provided a smoother ride than the old straight axle. GM continues to use an IFS in their trucks right up to the present day, but time has shown that this design is not without its problems.
As with anything that has more moving parts, the IFS has a propensity to wear out steering components much faster than the old straight axle. The individual components don’t necessarily wear out any faster, but with more parts, the accumulation of error is greatly accelerated. If not addressed promptly, the accumulation can make these trucks downright scary to drive—it’s surprising just how quickly small amounts of wear in the steering can result in an accumulation of error that becomes unmanageable. If your truck has larger than stock tires, a lift, or both, the problem becomes apparent sooner than on a stock truck. In fact, simply turning up the front torsion bars can accelerate a truck’s steering woes.
One of the best ways to address this problem is to install upgraded components from Cognito Motorsports. Kit availability varies depending on the year of your truck, with more options for later-model trucks. Follow along and we’ll show you the highlights of fixing the suspension on a 2008 Chevrolet 2500 HD using components from Cognito Motorsports (CMS). This upgrade features the eight-lug Truck and SUV Pitman/Idler Arm Support Kit and the Alloy Series Race Steering Kit. Both kits are for 2001-2010 eight-lug vehicles and can be used on stock or lifted trucks. DW