The torsion bars on a Chevrolet Silverado provide a crucial function in the front suspension. These torsion bars are the springs for the front of the truck, and they support the engine and front of the chassis. They are also adjustable, and by tightening the adjustment bolts or loosening them per your preference, you can raise or lower the Silverado a few inches. This process can take just a few minutes to do, but it may require multiple attempts to set the Silverado at the exact height you require.
Use the tape measure to determine how high the front of the Silverado is currently sitting off of the ground. Remember the measurement -- writing it down if necessary -- for later comparison.
Park the Silverado and set the parking brake. Lift the front of the Silverado with the jack and put the jack stands just behind the front wheels. Make sure the front wheels are positioned off of the ground. Lower the jack.
Find the torsion bar adjusting bolts, which are on the crossmember that goes across the width of the Silverado and ties into the torsion bars that lead into the lower control arm. Loosen the adjuster bolts if you want to lower the front end, and tighten the adjuster bolts if you want to raise the front end. Make sure that you adjust each bolt the same amount.
Lower the Silverado onto the ground with the jack. Measure the front end of the truck with the tape measure again, comparing it to the number you recorded in step 1. If you're not happy with the number or feel the need to adjust the front of the truck further, then lift the truck up again with the jack and repeat steps 2-4.
