Buick Envision 2016-2020 Suspension Bolt Torque Specifications

Correct torque is critical for suspension safety and performance. Under-torqued bolts can loosen, causing component failure or instability. Over-torqued bolts can damage threads, stretch the bolt, or distort the component, also leading to failure or improper alignment. Correct torque ensures proper clamping force for reliable operation and prevents premature wear and tear.

While it's possible to tighten bolts without a torque wrench, it is highly discouraged, especially for critical suspension components. You are much more likely to over-torque or under-torque a bolt without one. This can cause component failure and is dangerous. A torque wrench is an essential investment for performing suspension work. You can often rent one at most auto parts stores.

It's generally recommended to replace any 'torque-to-yield' bolts, which are often found in suspension systems. Torque-to-yield bolts are designed to stretch upon tightening, and they should only be used once. Also, any bolt that is severely corroded should be replaced, even if it isn't torque-to-yield. Always refer to the vehicle's service manual for specific recommendations, and err on the side of safety.

Ideally, you should check your suspension components after any major repair or after driving over extremely rough terrain or potholes. A general recommendation for regular checks is every 12 months, or at each tire rotation. Pay attention to any clunking noises or changes in handling, which might indicate loose suspension bolts.

This indicates an angle-tightening procedure, often used for torque-to-yield bolts. You'll first torque the bolt to a specified value, then tighten it an additional number of degrees. An angle gauge or torque wrench with angle measurement is required to complete these procedures correctly, and a failure to follow this procedure can result in component failure.