System: equipment: other pieces; trailer hitches and attachments.vehicle description: light-duty short-box c/k 107/207 extended cab pickup trucks with a weight distribution trailer hitch (VR4) option.note: if your vehicle IS presented to an authorized dealer on an agreed upon service date and the remedy IS not provided within a reasonable time and free of charge or the remedy does not correct the defect or noncompliance, please contact chevrolet service at 1-800-222-1020, or GMC service at 1-313-456-4547.also, contact the national highway traffic safety administration's auto safety hotline at 1-800-424-9393.