Question about 2004 Chevrolet TrailBlazer

Open Question

2007 chevy trailblazer (6 cyl., 4.2) shows obd2 codes of P0455 and P0506. No issues for 10 months now stalls when cold.

Vehicle gets 20.2 mph, no issues until now

Posted by Anonymous on

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad
  • 9 Answers

SOURCE: Code Scan Reads P0455 Evap. Emissions Leak, Large

large leek is usually the gas cap. just had the same problem

Posted on Jul 16, 2009

Ad
  • 10 Answers

SOURCE: idle problem on a 2006 chevy trailblazer 4.2

The code indicates an issue with the Throttle Actuator control. This is a little motor on the throttle body that opens the throttle plates at idle. That control motor may be bad and thus, causing a low idle.

I hope this helps.

Posted on Jul 21, 2009

ZJLimited
  • 17970 Answers

SOURCE: Got the codes P0506 and P1400 on an 07' 6-cyl

P0506 - Idle Air Control (IAC) System RPM Lower Than Expected

What does that mean?
This P0506 code is one that's sometimes triggered on vehicles that have electronic throttle control. That is, they don't have a regular throttle cable from the accelerator pedal to the engine. They rely on sensors and electronics to control the throttle. In this case, the P0506 DTC (diagnostic trouble code) is triggered when the PCM (powertrain control module) detects an engine idle speed that is lower than the desired (pre-programmed) RPM.

Potential Symptoms
Most likely the only thing you'll notice is the idle speed is lower than normal so it will likely be rougher. There are potentially other symptoms as well. Of course, when trouble codes are set, the MIL (malfunction indicator lamp, a.k.a. the check engine light) illuminates.

Causes
A P0506 DTC trouble code may be caused by one or more of the following:
* A vacuum leak
* An air restriction in the intake air path or exhuast
* A faulty positive crankcase ventilation (PCV) valve
* Damaged/failed/dirty throttle body
* Internal engine problem
* Failed PCM

Possible Solutions
This DTC is more of an informational code, so if there are any other codes set, diagnose them first. If there are no other codes, inspect for vacuum leaks, restrictions, and damage. If there are no symptoms other than the DTC itself, just clear the code and see whether it returns.

Posted on May 29, 2010

ryanlutton
  • 1149 Answers

SOURCE: I went to a local

Definitely clean that throttle body...can do it yourself for around $7.

Instructions for doing it without removing the throttle body.

1. Disonnect the battery....very important so your stepper motor isn't ruined when moving the butterfly.
2. Remove the plastic resonator on the top of the engine (The black piece that says 4200 on it)
3. Remove the large rubber hose from the throttle body.
4. Clean away, with throttle body cleaner or Seafoam, I just use the blue shop towels to clean in there. Could use a plastic bristle brush also for more elbow grease. Be very careful, as the butterfly will cut you very easily, very sharp edges. Make sure you get all the gunk out of there, including any edges of gunk that may have formed, preventing the butterfly from opening and closing properly. Needs to be nice and shiny.
5. Hook the resonator and hoses back up, don't forget the little pcv hose on the front right corner of it.
6. Hook the battery back up and drive around for 20 minutes or so with all accesories OFF. The computer will relearn a properly functioning throttle body at that point.
7. Enjoy a little bettery gas mileage and horsepower


As far as the injector cleane....Buy a $10 can of Seafoam, that will clean the injectors. Look on Youtube on how it works, good stuff.

Posted on Feb 21, 2011

ryanlutton
  • 1149 Answers

SOURCE: chevy trailblazer 2007 P0506 &

Cleaning your throttle body should take care of both problems. Clean your throttle body with throttle body cleaner. First disconnect the battery, clean the TB with TB cleaner, must be nice and shiny. When finished, hook the battery back up and drive around for 20 minutes or so with all accessories off, so the computer will relearn a properly functioning throttle body.

Your computer learned some bad habits, so when you changed the battery, the computer thought the throttle body was clean and functioning properly. So when you changed it, this caused all your problems. Very common, keep your throttle body clean, should be done at least once a year. Total cost if you do it yourself is around $5, for the can of TB cleaner.

Posted on Apr 25, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Noise


Check Exhaust System Heat Shields
Get under vehicle & push up & pull down on it,
to duplicate the movement on the road.

Jul 08, 2013 | 2004 Honda Pilot

1 Answer

Transmission not engaging 3rd or 4th gear


The symptoms & mileage is enough to tell
you it is time for a rebuild
Being a former police vehicle ,I would have
rebuilt the trans as soon as I got it,working okey
or not.
Forget advice that is typical unless you understand
the context the word was using in.

Jul 01, 2013 | 2005 Ford Expedition

1 Answer

When i step on gas pedal seems sluggish


Before making any suggestions

Do you ever do more than just drive
the car until something happens?

If so, what Preventative Maintenance in
detail, has been done in the last 3 years
altogether (vehicle history)

Any Dash Check Lights on &
have you checked for codes?

Do you have a repair shop you
have used for 20 years, that does
good work?

What engine do you have?

Hesitates when,up hills,between 25 & 40 mph etc

How long has this driveability issue been there?

Have you had it checked out at all by anyone?

Oct 03, 2012 | 2006 Buick LaCrosse

1 Answer

2001 santa fe 4cyl. has no power and won't go above 20 mph. next morning won't stay running. any ideas what is causing this?


Yeah!... it's getting it PROPERLY DIAGNOSED! Your dirvability issue doesn't reveal anything to which I (or anyone) could respond. Get the vehicle properly 'DIAGNOSED' at a dealership with qualified diagnogsticians (technicians). No way to know unless you get this done...

Apr 07, 2011 | Hyundai Santa Fe Cars & Trucks

2 Answers

Not Ready for Smog test


it is not how many miles but the type of driving.

here is a OBD2 drive cycle test.

Generic OBD II "Drive Cycle" Most OBD II ("On-Board Diagnostics II") diagnostic monitors will run at some time during normal operation of the vehicle.
However, to satisy all of the different Trip enable criteria and run all of the OBD II diagnostic monitors, the vehicle must be driven under a variety of conditions. The following drive cycle will (theoretically) allow all monitors to run on (??) vehicle. (Note: Drive cycle specifics vary by vehicle!)
  1. Ensure that the fuel tank is between 1/4 and 3/4 full.
  2. Start cold (below 86°F /30°C) and warm up until engine coolant temperature is at least 160° F (typically requires at least one minute; up to 3 minutes).
  3. Accelerate to 40-55 MPH at 25% throttle and maintain speed for five minutes.
  4. Decelerate without using the brake (coast down) to 20 MPH or less, then stop the vehicle. Allow the engine to idle for 10 seconds, turn the key off, and wait one minute.
  5. Restart and accelerate to 40-55 MPH at 25% throttle and maintain speed for two minutes.
  6. Decelerate with using the brake [or the clutch!] by coasting down to 20 MPH or less, then stop the vehicle. Allow the engine to idle for 10 seconds, turn the key off, and wait one minute.

Jun 04, 2010 | 2001 Kia Sephia

1 Answer

From a stand still if you accelerate hard vehicle starts vibra


Well, kind of short on description, issues typical in this complaint are misfiring and U joints.

To emininate the engine, does the vibration happen on power braking, without the vehicle moving?

May 24, 2010 | 2000 Chevrolet Blazer

1 Answer

I have a 2001 nissan pathfinder 4w. The OBD system-readiness status: Says catalytic converters, NOT READY; oxygen sensors, NOT READY; evaporative system, NOT READY. So did not pass inspection, I was told...


You have to re-set the obd via using Nissan's approved drive-cycle which is;

1. Start the engine when the engine coolant

temperature gauge needle points to C. Allow

the engine to idle until the gauge needle

points between the C and H (normal operating

temperature).

2. Accelerate the vehicle to 55 MPH (88

km/h), then quickly release the accelerator

pedal completely and keep it released for at

least 6 seconds.

3. Quickly depress the accelerator pedal for a

moment, then drive the vehicle at a speed

of 53 to 60 MPH (86 to 96 km/h) for at least

5 minutes.

4. Stop the vehicle.

5. Accelerate the vehicle to 35 MPH (55 km/h)

and maintain the speed for 20 seconds.

6. Repeat steps 4 through 5 at least 3 times.

7. Accelerate the vehicle to 55 MPH (88 km/h)

and maintain the speed for at least 3 minutes.

8. Stop the vehicle and turn the engine off.

9. Repeat steps 1 through 8 at least one more

time.

If step 1 through 7 is interrupted, repeat the

preceding step. Any safe driving mode is acceptable

between steps. Do not stop the engine

until step 7 is completed. If you cannot or

do not want to perform the driving pattern, a
NISSAN dealer can conduct it for you.

Nov 15, 2009 | 2001 Nissan Frontier Crew Cab

1 Answer

1999 Saturn SL 5-speed. The speedometer extremely inaccurate.


could be , probably is the speedometer cable, should be fairly cheap repair

Aug 04, 2009 | 1999 Saturn SL

Not finding what you are looking for?
2004 Chevrolet TrailBlazer Logo

Related Topics:

134 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76846 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6918 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...