Question about 2009 GMC Envoy

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2007 GMC Envoy Codes P0411 and P2440?

Check engine light came on, I do know what the codes refer to, just need to know location of the fuse and secondary airflow on a slant 6 to check areas as well as any tips to check when areas are located.

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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Anonymous

  • 375 Answers

SOURCE: check engine light on - 2003 gmc envoy XL

That code represents a lower than expected reading for temperature (coolant). First thing to do is check your coolant level, as if it is low, then the sensor can not read correctly. Second, you may have a thermostat that is stuck open, allowing the coolant to cool off too much. The sensor should be mounted on top of the engine, near the thermostat housing.

Posted on May 18, 2008

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Jason Morris

  • 362 Answers

SOURCE: Fuse Box Location 2006 GMC Envoy

Under the rear seat, drivers side.
Black box you will need to remove the cover.
Lone99star
Please rate this solution.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/jason_77a19afa8d604dee

Posted on Feb 10, 2009

farroutideas

Dale Farr

  • 78 Answers

SOURCE: wiring diagram or fuse box diagram-2007 GMC Envoy Denali

Hi there;

Here is the wiring diagram for the trailer wiring for your truck.
22593cd.jpg
Hope this helps
Farrout!

Posted on Mar 18, 2009

motor1258

Mike Butler

  • 6674 Answers

SOURCE: i have a 2002 gmc envoy bringing up codes P0440

440 is Evaporative emission control system malfunction. Could be as simple as cleaning your gas cap & filler well & making sure gas cap is on tight, as that is the most common cause, otherwise you may need to check for vacuum leaks or purge solenoid has failed, or canister may be plugged.
495 is telling you that your engine/rad cooling fan, is malfunctioning as well, which I suspect is causing that noise your hearing. Have it looked at a.s.a.p. as it can do some real $$$ damage if it flies apart.
Have codes erased after fixing fan & making sure cap is tight, then see if 440 comes back, if it does, you may need to do more investigation.

Posted on Sep 03, 2009

Carlos Solas

  • 293 Answers

SOURCE: 2007 GMC Envoy - Gas gauge showing empty and check engine light

This is a safety feature that the vehicle brings. You need to reset the E.C.U on dealership or it will keep doing it to you. It was probably caused by one single time that you did not closed the fuel cap correctly. Good luck

Posted on Dec 29, 2009

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HELP ME WITH THESE CODES!!


What engine ? 3.8 or 5.3 L
DTC P0128: Engine Coolant Temperature (ECT) Below Thermostat Regulations Temperature

DTC P0411 : Secondary Air Injection (AIR) System Incorrect Air Flow Detected

DTC P2440 : Secondary Air Injection (AIR) Valve Stuck Open

DTC P2431 : Secondary Air Injection (AIR) System Pressure Sensor Performance
Circuit/System Description
The secondary air injection (AIR) system aids in the reduction of hydrocarbon emissions during a cold start. The system forces fresh filtered air into the exhaust stream in order to accelerate the catalyst operation. An electric air pump, the secondary AIR injection pump, provides filtered air on demand to the AIR control solenoid valve/pressure sensor assembly. The AIR control solenoid valve/pressure sensor assembly controls the flow of air from the AIR pump to the exhaust manifold. The AIR solenoid valve relay supplies the current needed to operate the AIR solenoid valve/pressure sensor assembly. A pressure sensor is used to monitor the air flow from the AIR pump. The powertrain control module (PCM) supplies the internal pressure sensor with a 5-volt reference, an electrical ground, and a signal circuit.
The AIR diagnostic uses 3 phases to test the AIR system:
DTCs P0411 and P2430 run during Phase 1
DTCs P2430 and P2440 run during Phase 2
DTC P2444 runs during Phase 3
During phase 1, both the AIR pump and the solenoid valve are activated. Normal secondary air function occurs. Expected system pressure is 8-10 kPa above BARO.
During phase 2, only the AIR pump is activated. The solenoid valve is closed. Pressure sensor performance and solenoid valve deactivation are tested. Expected system pressure is 15-20 kPa above BARO.
During phase 3, neither the AIR pump nor the solenoid valve is activated. AIR pump deactivation is tested. Expected system pressure equals BARO.
In all 3 phases, testing is accomplished by comparing the measured pressure against the expected pressure. The PCM can detect faults in the AIR pump, AIR solenoid valve/pressure sensor assembly, and the exhaust check valve. The pressure sensor can also detect leaks and restrictions in the secondary AIR system plumbing.

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Regards,

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Wiring diagram or fuse box diagram-2007 GMC Envoy Denali


Hi there;

Here is the wiring diagram for the trailer wiring for your truck.
22593cd.jpg
Hope this helps
Farrout!

Mar 07, 2009 | 2007 GMC Envoy Denali

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