Question about Chevrolet 2007 Chevrolet Avalanche 1500 LTZ

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2007 5.3 liter engine code

Just replaced throttle body, and pedal. The truck still fells like it has very little power-miss and is getting around 9 miles per gallon. This is the flex fuel model, had to do the replace lifter, head gasket, repaired lifter from mis-fire.

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  • dfscrichmond
    dfscrichmond Feb 14, 2014

    I did read were there a grounds on the back of the heads is that right on the 5.3 liter.

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6ya6ya
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SOURCE: Isuzu Hombre 4.3 (Chevy S10) 1997 won't start

Definitely check for spark next. let me know what you find.

Posted on Dec 30, 2008

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Brian032472
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SOURCE: engine light comes on. Code is PO305 #5 cyl mis fire.

po 305 is cylinder 5 misfire detected. I would check the plug wire for starters

Posted on Jan 30, 2009

  • 3 Answers

SOURCE: stalling, 'reduced power' light, and OBD code P1125 Manufacturer control air metering...

These trucks have a drive by wire system,we seen a` lot with a broken ground wire on the rear of the drverside cyl head,this is hard to see just feel and give the wire a tug .If the wire is loose or broken the reduced engine power light will come on.

Posted on Feb 15, 2009

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SOURCE: Poor gas milage

change fuel filter. but if it does not work u might have some leaky injectors

Posted on Jun 09, 2009

  • 144 Answers

SOURCE: code p0121 TPS

THERE IS A TP SENSOR BUILT INTO THE THROTTLE ACTUATOR. THESE TRUCKS HAVE BEEN KNOWN FOR A FEW PROBLEMS IN THIS AREA. THROTTLE ACTUATOR IS NOT SERVICEABLE. THE THROTTLE BODY WILL NEED TO BE REPLACED IF IT IS PROVEN FAULTY. THE APP SENSORS ARE LOCATED IN THE GAS PEDAL MODULE. THESE SEND SIGNAL TO COMPUTER TO TELL IT WHERE YOUR FOOT IS, THEN COMPUTER SENDS COMMAND TO THROTTLE ACTUATOR TO OPEN OR CLOSE THROTTLE BASED ON THIS INPUT. THE SENSOR IN THE THROTTLE ACTUATOR DELIVERS A MESSAGE BACK TO THE COMPUTER TO TELL IT WHAT THE ACTUAL THROTTLE POSITION IS. IF THESE SIGNALS DONT MATCH(WHERE THROTTLE IS COMMANDED AND WHERE IT ACTUALLY IS)THE CHECK ENGINE LIGHT WILL ILLUMINATE AND THE VEHICLE COULD GO INTO A REDUCED POWER MODE. HOPE THIS HELPS YOU!

Posted on Sep 07, 2009

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2 Answers

Is the throttle sensor located at the accelerator pedal in a 2012 Jeep Patriot, Latitude (with 2.4 liter engine & automatic transmission, front wheel drive)?


There is one at the pedal and one at the throttle body. The one at the pedal tells the computer what throttle you want, and the one on the throttle tells the computer where the throttle is. Usually, if there is a fault code for the pedal sensor it will say "sensor A" and a problem st the throttle body sensor will say "sensor B", but not always.

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2007 Yukon XL - P01121 Throttle/Pedal Position Sensor A Circuit Range/Performance.


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COULD THE GAS PEDAL CABLE CAUSE THIS CODED PO507 to be high


Extracted from Engine-Codes.com

Code P0507

Possible causes

- Dirty throttle body

- Electric throttle control actuator misadjusted or damaged

- Faulty Electric throttle control actuator

- Intake air leak

- Poor electrical connection to the Intake Air Control (IAC) valve


help.jpg What does this mean?

Tech notes

If there are no intake leaks, clean throttle body, adjust engine idle and erase engine code. If the code comes back you may have to replaced the Electric Throttle Control Actuator (Motor) to repair the problem.



There is a factory service bulletin for the following Chevrolet models:



2006-2008 Chevrolet Trail Blazer

2007-2008 Chevrolet Avalanche

2007-2008 Chevrolet Express

2007-2008 Chevrolet Silverado

2007-2008 Chevrolet Suburban

2007-2008 Chevrolet Tahoe

Chevrolet Factory Service Bulletin OBDII Code P0507


What does this mean?

When is the code detected?

Thi P0507 code sets when the Powertrain Control Module (PCM) detects an engine speed outside of the Idle Air Control (IAC) valve range of control.

Possible symptoms

- Engine Light ON (or Service Engine Soon Warning Light)

- Engine hard to start

- Rough or erratic idle speed

P0507 Chevrolet Description

The Idle Air Control (IAC) valve is a Powertrain Control Module (PCM) controlled stepper motor located on the throttle body. The stepper motor drives a valve pintle which protrudes into a passage that bypasses the throttle plates. The PCM commands the IAC valve pintle to extend to decrease the idle speed. The bypass air flow is reduced and the idle speed decreases as the pintle approaches its seat. The PCM retracts the IAC valve pintle away from its seat to increase the idle speed. The retracting of the IAC valve pintle allows more air to bypass the throttle plates. One of the PCMs uses for the IAC system is to maintain a desired idle speed. This DTC sets when the PCM detects an engine speed outside of the IAC\'s range of control.





Read more: http://engine-codes.com/p0507_chevrolet.html#ixzz3ObdI2chF

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I have a Chevrolet Silverado 2007 new body style saying that i have reduce engine power code p2138


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1 Answer

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Dear Sir, I have a 1997 Jeep Cherokee Sport, 6 cylinder 4.0 liter. I recently tried cleaning my throttle body with carb cleaner while the vehicle was running. After spraying a half can of cleaner in the...


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