If you don't have the owner's manual:
* Look for a sticker: Check the driver's side doorjamb or the glove compartment. Sometimes, the recommended torque is printed on a sticker.
* Consult a repair manual: A Haynes or Chilton repair manual for your specific year and model Chevy van will list the correct torque specs.
* Contact a Chevy dealer: A dealership's service department can likely provide the correct information.
* Use a reliable online resource: Some websites dedicated to automotive repair may offer this information, but always double-check the source's reliability.
Important Note: Using the incorrect torque can lead to loose wheels (unsafe!) or damaged lug nuts or wheel studs. It's crucial to find the correct specification before tightening your wheels.