2005 Chevrolet Trailblazer shifting issues

Tiny
ANADING30
  • MEMBER
  • 2005 CHEVROLET TRAILBLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 230,000 MILES
I was driving my vehicle down the road and it all of a sudden the rpms shot up. From then on it wouldnt shift at any other speeds faster than 40 mph. It threw exhaust camshaft position timing sensor, map sensor, and secondary air injection system. I replaced the first sensor and it is still acting up. What is causing this and if I replace the other two will if fix my problem?
Saturday, September 12th, 2015 AT 4:09 PM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
Having a code for a sensor circuit does not mean the sensor is the cause of the code. It can be anything in the circuit.

I suggest you write all the code numbers down and then clear them. Now drive it until the check engine light comes back on and record the new codes set. Then post the number here. I need the exact numbers, not someone's description of them.
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Sunday, September 13th, 2015 AT 7:19 AM

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