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Matrix6834

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  1. Matrix6834
    I replaced the o2 sensors, plugs and wires I also replaced the exhaust system about a year ago.
  2. Matrix6834
    Yes.
  3. Matrix6834
    Hello! So my truck has over 200,000 miles on it but less than 6,000 on the motor. However, when I drive I will occasionally feel a shaking vibration at lower RPMs and get a p0300 AND a p0151 code. If I hit about 70 mph it starts to flash at me. Then stops and is fine with the light on and drives more smoothly at a higher RPM. I have already replaced the wires and plugs and the o2 sensors multiple times. I’m lost. Any ideas?
  4. Matrix6834
    I’m having a similar issue. 03 gmc Sonoma. At lower RPMs feel a little rocking /shaking then get codes P0300 and P0151. Replaced plugs /wires and o2 sensors. At higher rpms runs smoother but then check engine light comes on flashing. Truck has 248,607, motor has 5,431 on it. I’m lost.
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