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  1. [SOLVED] DIY Throttle Position Sendor, code PO121 5.3 V8

    The 02-09 "How-To" and DIY Section
    I wanted to share some info on my successful fix for code PO121, indicating problems with the throttle position sensor. I followed Youtube instructions on removing, cleaning and replacing the throttle body. I was able to find just the sensor, part number 19-259-452. It was $43 delivered. Most...
  2. Replaced throttle body P0121 P060E P2135

    OEM Issues
    While driving, the check engine light, stabiltrack off, and reduced engine power light came on. I had error codes P0121 P060E P2135 as well as clicking noise coming from the throttle body itself when you would turn the ignition on without starting the engine. I replaced the throttle body as well...
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