Unfortunately, the instrument panel and steering wheel has to come out in order to access and remove the heater core:
REMOVAL & INSTALLATION
See Figures 1 through 9
Do not attempt to remove or install the steering wheel by hammering on it. Damage to the energy-absorbing steering column could result.
CAUTION On models with an airbag, wait at least 90 seconds from the time that the ignition switch is turned to the LOCK position and the battery is disconnected before performing any further work.
Fig. 1: From behind the steering wheel, remove the horn pad retaining screws
Fig. 2: Use a Torx® bit to loosen the screws until the groove along the screws circumference is on the screw case Fig. 3: With two hands pull the horn pad off the front of the steering wheel
If equipped with SRS, place the air bag pad with the upper surface facing up. Refer to the illustration.
Fig. 4: On air bag models, always place the horn pad in this position when storing it Fig. 5: Disconnect the horn wiring from the back of the pad
Fig. 6: Matchmark the nut and steering shaft with paint or a marker
Fig. 7: Remove the nut retaining the steering wheel to the shaft
Fig. 8: Use a steering wheel puller to separate the steering wheel from the shaft Fig. 9: Pull the steering wheel off the shaft once loosened by the puller
CAUTION On models with an airbag, wait at least 90 seconds from the time that the ignition switch is turned to the LOCK position and the battery is disconnected before performing any further work. Refer to for all air bag warnings.
Remove the following components:
CAUTION The Supplemental Restraint System (SRS) must be disarmed before removing the steering wheel. Failure to do so may cause accidental deployment of the air bag, resulting in injury. In addition, the fasteners, screws and bolts originally used for the air bag components have a special coating on them specifically designed for use in this system. They must never be replaced with any substitutes. Anytime new fasteners are needed, replace them with the correct fasteners.
CAUTION When carrying a live air bag, make sure the bag and trim cover are pointed away from the body. In an unlikely event of an accidental deployment, the bag will then deploy with minimal chance of injury. When placing a live air bag on a bench or other surface, always face the bag and trim cover up, away from the surface. This will reduce the motion of the module if it is accidentally deployed. Never disassemble the front passenger air bag assembly.
Thank you for info, but its more work than I thought. I`ll go to a repair person.
Thank you again
have a good week...