Jeep 2012 Grand Cherokee Owner's Manual page 582

578 WHAT TO DO IN EMERGENCIES
CAUTION!
• Front or rear wheel lifts should not be used.
Internal damage to the transmission or transfer
case will occur if a front or rear wheel lift is used
when towing.
• Failure to follow these towing methods can cause
severe damage to the transmission and/or transfer
case. Such damage is not covered by the New
Vehicle Limited Warranty.