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  1. OEM Issues
    So I have my 5.3l 04 trailblazer throwing codes for the tps and knock sensor. Codes p0120 p0220 and p0332. First 2 are tps sensors a and b. Last code is knock sensor bank 2. Any suggestions before I tear both off and replace them. If not any tips on replacing them??
  2. General
    Okay this problem started last year summer time. driving down the highway and check engine light came on followed by reduce engine power :weird:. Checked codes at local auto parts store came up tps. Changed it later that week with a used part ran fine for a week later same...
  3. OEM Issues
    I just got three codes on my truck. P2138, P2135, and P0641. I believe they all correspond with the TPS. I have changed the throttle body because it has an integrated TPS. About 24 hrs later it popped the same codes. What can be causing this?
  4. OEM Issues
    2002 Trailblazer LTZ I-6 4WD 143k miles. When starting after it has been sitting for a while (like overnight) the Service Engine Soon and Reduced Engine Power lights come on. While idling with the REP light on the RPM will vary back and forth from 600 rpm (idles very roughly at this point...
  5. General
    I have a 2004 Chevy Trailblazer w/ 150XXX miles. its been acting crazy it drives fine when the weather is cold. no problems. when the weather is over 65 degrees is when it seems the problem starts. I had about 10 codes and they all had to deal with the (TPS) in different readings I purchased...
1-5 of 5 Results