Diagnostic Aids
WARNING: This page is about a different car, the 2002 GMC Sonoma and 2002 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
If the transmission shifts into gear and then jumps out of gear, refer to TRANSMISSION JUMPS OUT OF GEAR . If it is an intermittent condition, other driveline components may be faulty.