Easiest access is to remove the egr temp sensor and have a look inside. Then Ohm out the egr temp sensor. Should be around 750k
ohms or less. Mine was wide open. Good luck
Dave
Looking for the right side body cladding including the rear door piece, rear fender flare and the piece that goes around the corner light around to the tailgate...shipping to 94080
Dave
Looking for the right rear quarter panel fender flair and lower quarter panel deco piece that surrounds the light and wraps around the rear of truck...grey color.
Thanks in advance,
Dave