A different sensor 56028815AA "37.00 bucks" replaces sensor 56028373AB "123.00 bucks". Tech Tip: After installing 56028815AA, the vehicle should be allowed to learn misfires with the new crank sensor. To do so, please do the following. 1. Accelerate vehicle to 70 mph and let off of gas pedal. 2. Dellelerate to 20 mph, without braking. 3. Turn ignition off and on. Drive vehicle and if engine MIL light is no longer flashing the mis-fire learning process has been successfully executed. If MIL light is still flashing, repeat the above process. Drive vehicle a little to ensure there are no driveability issues. STAR PARTS.