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goodwrench9124
goodwrench9124, ASE Certified Technician
Category: Chevy
Satisfied Customers: 3432
Experience:  Ase Master Certified, GM Master Certified Tech. Awarded GM Top performer, Hybrid certified
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2005 chevy trailblazer LS: LT..S TROUBLE CODES P0014 AND P0128

Resolved Question:

I HAVE A 2005 CHEV TRAILBLAZER LS/LT . HAD A ON- BOARD DIANOSTIC OBD11 SYSTEM CHECK.
WHAT'S TROUBLE CODES P0014 AND P0128, AND
HOW DO I FIX PROBLEM.
Submitted: 7 years ago.
Category: Chevy
Expert:  goodwrench9124 replied 7 years ago.
Hello and welcome. does the vehicle seem to run ok?
Customer: replied 7 years ago.

SOMETIMES LITTLE SLUGGISH. MOST TIME OK

Expert:  goodwrench9124 replied 7 years ago.

Ok, code P0 128 is a weak thermostat. replacing the thermostat will correct this code. the thermostats are little difficult to replace on these vehicles takes a couple of hours to do. now the code P0014 usually indicates a problem with the exhaust camshaft actuator. in most cases the screens come of the hydraulic actuator causing the valve to stick. on the right front corner of the cylinder is the actuator, it has one connector and one bolt holding it place. remove the actuator and inspect the screens. there should be 3 screens on the act. if it it only has 2 screens replace the actuator. here is a picture of the actuator.

 

graphic

 

 

  • (1) Screen for Advance Pressure to Camshaft Actuator
  • (2) Screen for Pressurized Oil from Oil Pump

    (3) Screen for Retard Pressure to Camshaft Actuator

     

     

    graphic

     



    Edited by goodwrench9124 on 2/28/2010 at 4:27 PM EST
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