Should I use Bosch or Denso oxygen sensors for a 2002 Sierra 1500 HD?
Question: These will be upstream sensors since the rears are deleted. This is a stock motor with a computer tune with roughly 225,000 miles on the motor. Vehicle is regularly serviced. As far as performance and longevity, those are the main things that I am after.
Best Answers: Should I use Bosch or Denso oxygen sensors for a 2002 Sierra 1500 HD?
either ought to work satisfactorily. Bosch having a more known reputation but Denso still supplying a significant market share.
You have heated o2 sensor codes. You do not have to buy them at the dealer. Also you have a code which is Evaporative Emission Control System Vent Control Circuit Open. I would suggest going to a reputable repair facility for a proper diagnosis.
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