Truck is burning fuel rich and doesn't always let code reader work.
My truck is burning fuel very rich. My tps is working
because my scan tool live data showed me the
percentage of the throttle. It took multiple tries to
get live data and vin to show on my scan tool. I had
to turn the truck on and off multiple times for the
truck to allow the scan tool to use features. I have
the 4.3 V6. Vortec 4300