What is the pcm in a 2004 chevy trailblazer? and how I can fix it.

Think your looking for wrong thing's , what problem are you having ? I have factory service info. i see fuse for PCM B fuse # 10 - 20 amp an Ign. 1 fuse # 16 10 amp . No relay's

code p0014 - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum

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Sep 8, 2007 - 11 posts - ‎8 authors
On my Trailblazer I have a code P0014 . this says Camshaft Position Actuator B ... If the desired and actual cam phase angle error exceeds its ... This diagnostic procedure supports the following DTC: ... replace the camshaft actuator solenoid, change the engine oil and filter, ... 2004 Chevy TrailBlazer LT P0014 - Camshaft Position Actuator Solenoid "Relearn"
11 posts
Dec 11, 2009
cam crank sensor mismatch
11 posts
Jul 4, 2009
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Tech Code "dtc P0014" 2003 Trailblazer - Chevy S-10/Blazer ...

www.gm-trucks.com/.../72278-tech-code-dtc-p0014-2003-trailblazer/

Dec 31, 2007 - 14 posts - ‎6 authors
Tech Code "dtc P0014" 2003 Trailblazer - posted in Chevy ... it had been serviced before for the same thing in 2003 or 2004! ... replace the camshaft actuator solenoid, change the engine oil and .... The extended war. co. prob. would not be to happy since they already fixed the sensor once or twice already.

Replace a Camshaft Position Actuator Solenoid Valve on a ...

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https://www.youtube.com/watch?v=4Dkdd287AKg

Turn everything, all switches, off then disconnect both battery cables and leave disconnected for 30 minutes. This resets PCM to defaults. Then reconnect ( + ) first then ( - ).

Check for OBD2 codes, primarily a code indicating PCM memory is corrupt. My Trailblazer at times wouldn't turn over and start. Nothing at the key. When you attempt to start the vehicle and you turn the key to the start position, the PCM sends a signal to the starter relay to start the engine. Youtube video showed a mechanic warming the PCM with a hair dryer, and it would start. Tried it on mine and it started fine. If it is the PCM, the remedy is PCM replacement. Got mine from pcmforless.com about $100.00. They had to program the new PCM with the vehicle vin number. Once installed no more problems.

check cruise control fuse and check the brake lights see if brake light working because the brake light switch will deactivate cruise control when brakes is applied.if brake lights dont work either fuse blowed or switch bad.if all is good have vechicle code scan because cruise control control by PCM and vechicle speed sensor and thottle actuator control motor.

P0600 is a serial communications link problem with the PCM. This could just be a problem with the connection to the diagnostic tool, and not really be a problem with the truck, could be the tool. If your truck is running normally otherwise, try a different code reader to narrow the problem. If it appears with multiple readers, the problem could be the PCM, or its female serial connection to the reader.

Did she disconnect the negative terminal from the battery when replacing the fuse? Is it possible she swapped fuses instead of replacing them? One easy thing to try is to disconnect the battery for at least 30 min to allow the PCM (computer) to reset itself.

Sometimes the Computer [PCM] that controls the engine will loose it's memory on how you've driven it when power is removed. It should reset itself after a few miles of driving.

The P0128 is your thermostat. Your engine isn't getting up to temperature, is probably stuck open.

P1680 has to do with your pedal position sensor. Either way, your PCM either needs to be recalibrated by the dealer OR replaced. This depends on where your VIN # falls on the list of the technical service bulletin that is out there.

easyiest way to find info about any car you own is clymers books.helps to see if its something you really want to do yourself.