20 Most Recent 2005 Chevrolet Cobalt Questions & Answers


Its hard to fit your hand in the small space so best to remove the 2 bolts on top 10mm that are holding the headlight in place. The from the side, pull/pop the headlight assembly forward and out from behind the front grill area. Once its out, you can easily turn the retaining collar and remove the bulb. Be sure not to touch the glass of the new bulb or the oils from your fingers will create a hotspot and shorten the bulb life. Replace in reverse order.

2005 Chevrolet... | Answered Yesterday


Fuel problems either the fuel pump can not keep up to the demand or a inline fuel filter is starving your engine because it is partially blocked.

2005 Chevrolet... | Answered on Mar 16, 2019


Yes. Be aware that a bad cam sensor can cause this code if the cam and crank sensor are both borderline bad, you can check with a DVOM or a scanner that reads data pids. I hope this helps. Take care

2005 Chevrolet... | Answered on Mar 03, 2019


• DTC U2105 Lost Communications With Engine Control System
Modules connected to the GMLAN serial data circuits monitor for serial data communications, during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules have programmed information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are also supervised and some periodic messages are used by the receiver module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. When a message that indicates the availability of the transmitter module is not received, the receiver module sets a DTC 21xx where xx is equal to the 2-digit identification number of the transmitter module.
The DTC descriptors listed below provide a method for determining which module is not communicating. A module with a GMLAN serial data circuit malfunction or which loses power during the current ignition cycle will have a Loss of Communication DTC set by other modules that depend on information from that failed module. The modules that can communicate will set a DTC indicating the module that cannot communicate.

Your best bet , take it to a qualified repair shop .

2005 Chevrolet... | Answered on Feb 23, 2019


i dont think you can just get the chip,its the complete power steering control module (
computer) typical problem withall ions and cobalts

2005 Chevrolet... | Answered on Sep 30, 2018


in front of the gear lever, under lighter

2005 Chevrolet... | Answered on Apr 21, 2018


Pull the handle to lower the seat, and open the trunk from the inside with the emergency release handle.

2005 Chevrolet... | Answered on Jan 13, 2018


The check engine light being on now is a different problem , Have DTC'S - diagnostic trouble codes checked ,will have something to do with electronic throttle control . That is what reduced engine power is about . It's in a reduced power mode.
Reduced Engine Power Mode
When the ECM detects a condition with the TAC system, the ECM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:
• Acceleration limiting--The ECM will continue to use the accelerator pedal for throttle control; however, the vehicle acceleration is limited.
• Limited throttle mode--The ECM will continue to use the accelerator pedal for throttle control; however, the maximum throttle opening is limited.
• Throttle default mode--The ECM will turn off the throttle actuator motor and the throttle will return to the spring loaded default position.
• Forced idle mode--The ECM will perform the following actions:
- Limit engine speed to idle by positioning the throttle position, or by controlling the fuel and spark if the throttle is turned off.
- Ignore the accelerator pedal input.
• Engine shutdown mode--The ECM will disable fuel and de-energize the throttle actuator.

Do you know what electronic throttle control is ?
--------------------------------------------------------------------------------
Throttle Actuator Control (TAC) System Description

The throttle actuator control (TAC) system delivers improved throttle response and greater reliability and eliminates the need for mechanical cable. The TAC system performs the following functions:
• Accelerator pedal position sensing
• Throttle positioning to meet driver and engine demands
• Throttle position sensing
• Internal diagnostics
• Cruise control functions
• Manage TAC electrical power consumption
The TAC system includes the following components:
• The accelerator pedal position (APP) sensors
• The throttle body assembly
• The engine control module (ECM)

Your best bet , take it to a qualified repair shop .

2005 Chevrolet... | Answered on Dec 24, 2017


General Motors has decided that a defect, which relates to motor vehicle safety, exists in certain 2005-2010 model year Chevrolet Cobalt vehicles;
2005 model year Pontiac Pursuit; 2005-2006 model year Pontiac G4; 2006 model year Pontiac G5 Pursuit; and 2007-2010 model year Pontiac G5
vehicles equipped with electric power steering. Some of these vehicles have a condition in which a sudden loss of power steering assist could occur at
any time while driving the vehicle. If the power steering assist is lost, a chime will sound and a "Power Steering" message will be displayed in the
Driver Information Center to inform the driver of the condition. Steering control will be maintained, as the vehicle defaults to a manual steering mode.
If power steering assist is lost, it may require greater driver effort at low vehicle speeds, for example, below 15 mph (25 km/h). Unless a driver
compensates for this additional effort, it may increase the risk of a crash.

2005 Chevrolet... | Answered on Dec 17, 2017


It sounds like failing hydraulic pistons in the steering rack/steering box to me!

2005 Chevrolet... | Answered on Nov 21, 2017


If the block feels warm, the heater is working.

2005 Chevrolet... | Answered on Nov 16, 2017


Well you shouldn't pay to much attention to what some people say . Never use carb. cleaner to clean a mass air flow sensor , they make a special cleaner for mass air flow sensors . And you just spray the sensor an let it air dry ,then put it back together . And as far as dealer's not being able to find this ,i'm sure some may not . Just as any independent repair shop may not . I have thrity years experience at GM dealerships ,started at a Chevy dealer back in 1984 ,right out of a two year automotive technician program . Have worked at Cadillac , pontiac , GMC etc.....
Listening to others making guesses as to what the problem is ,mite fix the problem an then again it may not . There are a lot of electronic componets on your vehicle that could cause your problem , looking at sensor data on a capable scan tool is the correct way to find your problem .
007 Idle Speed Problems Scan Data for Idle

2005 Chevrolet... | Answered on Oct 17, 2017


Hi, there are 3 different engines for the 2005 Cobalt. I have pasted instructions from Autozone.com for all 3 below. I recommend you run the test also pasted below before buying a new sensor. If your sensor passes the test, please get back to me with your symptoms and/or trouble code for alternate repair advice. Please let me know if you have any questions, and thanks for using FixYa.
Removal & Installation2.0L Engine
Supercharger Inlet Pressure (Scip) Sensor
jturcotte_2008.gif



Fig. Manifold Absolute Pressure (MAP) SCIP sensor location-2.0L engine

  1. Disconnect the Supercharger Inlet Pressure (SCIP) sensor harness connector.
  2. Remove the SCIP sensor (1) from the supercharger.
    WARNING: If the SCIP sensor seal is damaged, the SCIP sensor must be replaced.
  3. Inspect the seal for damage.

To install:
NOTE: Use the new SCIP sensor seal provided with the new SCIP sensor.
  1. Install the SCIP sensor (1) into the intake manifold. Tighten the bolt to 89 inch lbs. (10 Nm).
  2. Connect the SCIP sensor harness connector.
Temperature Manifold Absolute Pressure (Tmap) Sensor
jturcotte_2009.gif

Fig. Manifold Absolute Pressure (MAP) TMAP sensor location-2.0L engine

  1. Disconnect the Temperature Manifold Absolute Pressure (TMAP) sensor harness connector.
  2. Remove the TMAP sensor from the intake manifold.
    WARNING: If the TMAP sensor seal is damaged, the TMAP sensor must be replaced.
  3. Inspect the seal for damage.
To install:
NOTE: Use the new TMAP sensor seal provided with the new TMAP sensor.
  1. Install the TMAP sensor into the intake manifold. Tighten the bolt to 89 inch lbs. (10 Nm).
  2. Connect the TMAP sensor harness connector.
2.2L & 2.4L Engines
jturcotte_2010.gif

Fig. Manifold Absolute Pressure (MAP) sensor location-2.2L & 2.4L engines

  1. Remove the throttle body.
  2. Disconnect the engine harness electrical connector from the Manifold Absolute Pressure (MAP) sensor.
  3. Remove the MAP sensor and seal.

To install:
  1. Lubricate the NEW MAP sensor seal with clean engine oil.
  2. Install the MAP sensor into the intake manifold.
  3. Connect the engine harness electrical connector to the MAP sensor.
  4. Install the throttle body.
Testing
  1. Verify the integrity of the entire air induction system by inspecting for the following conditions:
    Any damage to, or hairline fractures of, the MAP sensor housing, Loose or improper installation, Any vacuum leak
  2. Verify that restrictions do not exist in the MAP sensor port or vacuum source.
  3. Determine the current vehicle testing altitude. Ignition ON, observe the scan tool BARO Sensor parameter.
  4. Use the scan tool and compare the MAP Sensor parameter to a known good vehicle, under various operating conditions.

Circuit Testing
jturcotte_556.jpg

Fig. Manifold Absolute Pressure (MAP) connector end view-2.0L & 2.2L engines
jturcotte_557.jpg

Fig. Manifold Absolute Pressure (MAP) connector end view-2.4L engine

NOTE All electrical components and accessories must be turned OFF, and allowed to power down.

  1. With the ignition OFF, disconnect the MAP harness connector at the MAP sensor.
  2. Test for less than 5 ohms of resistance between the low reference circuit terminal 2 and ground-2.0L & 2.2L (A and ground-2.4L).
    1. If greater than the specified range, test the low reference circuit for an open/high resistance.
    2. If the circuit tests normal, replace the ECM.
  3. With the ignition ON, test for 4.8-5.2 volts between the 5 volt reference circuit terminal 1 and ground-2.0L & 2.2L (C and ground-2.4L).
    1. If less than the specified range, test the 5 volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the ECM.
    2. If greater than the specified range, test the 5 volt reference circuit for a short to voltage. If the circuit tests normal, replace the ECM.
  4. Verify the scan tool MAP sensor parameter is less than 1 kPa.
    1. If greater than the specified range, test the signal circuit terminal 3-2.0L & 2.2L for a short to voltage.
    2. If the circuit tests normal, replace the ECM.
  5. Install a 3A fused jumper wire between the signal circuit terminal 3-2.0L & 2.2L and the 5 volt reference circuit terminal 1-2.0L & 2.2L. Verify the scan tool MAP sensor parameter is greater than 126 kPa.
    1. If less than the specified range, test the signal circuit terminal 3-2.0L & 2.2L for a short to ground or an open/high resistance.
    2. If the circuit tests normal, replace the ECM.
  6. If all circuits test normal, test or replace the MAP sensor.

Component Testing

NOTE You must perform the circuit/system testing, in order to verify the integrity of the MAP sensor circuits, before proceeding with the component testing.
  1. Turn ON the ignition, with the engine OFF, and remove the MAP sensor.
  2. Install a 3A fused jumper wire between the 5 volt reference circuit terminal 1-2.0L & 2.2L and the corresponding terminal of the MAP sensor.
  3. Install a jumper wire between the low reference circuit terminal 2-2.0L & 2.2L of the MAP sensor and ground.
  4. Install a jumper wire at terminal 3-2.0L & 2.2L of the MAP sensor.
  5. Connect a DMM between the jumper wire from terminal 3 of the MAP sensor and ground.
  6. Install the J 35555 to the MAP sensor vacuum port. Slowly apply vacuum to the sensor while observing the voltage on the DMM. The voltage should vary between 0-5.2 volts, without any spikes or dropouts.
  7. If the voltage is not within the specified range or is erratic, replace the MAP sensor.

2005 Chevrolet... | Answered on Aug 05, 2017


Pull this and push seat back down
7_7_2017_12_49_38_am.jpg

2005 Chevrolet... | Answered on Jul 07, 2017

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