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What is limp mode on 2005 avalanche 4whl dr & why

Was running perfecly it happened after accidenly engaged trailer switch

Posted by Anonymous on


6 Suggested Answers

  • 2 Answers

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

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Posted on Jan 02, 2017

  • 4 Answers

SOURCE: 1996 ford explorer stuck in 4whl dr low

this may be no help atall, but i had a GMC pickup once, and there is a vacuum switch that was stuck and that was causing my problem. it was around a $300 dollar fix, and that was 8 years ago, so i imagine it is quite a bit more expensive now.

Posted on Dec 27, 2008

  • 3 Answers

SOURCE: My 1994 GMC Yukon will not engage 4-wheel drive

Normally when I see this it almost always turns out to be the actuator on the front differential has failed. It is possible that a fuse has blown but you may want to confirm that the solenoid is not bad.

Posted on Aug 14, 2009

  • 45 Answers

SOURCE: 4whl drive switch won't engage 4wd

you have a vacuum system problem more than likely. The controls at the wheels are switched using vacuum motors/pumps on vehicles equipped with auto hubs.

Posted on Dec 18, 2009

SOURCE: 2005 Lincoln LS in Limp Mode. I can start the car

You have a very bad COP Ignition Coil,that is spiking the PCM (computer)
The spike comes back on the TPS Sensor,then the PCM doesn't see the
throttle signal your foot sent thru, the pedal actuator (gas pedal) ,so it puts the
car into ETC Failsafe,and you can only go 6 mph.

If you got no ETC Failsafe, on the bottom right side of the dash, tell me what you do have
I need all the codes,if you have a MIL Lamp on ( the one that looks like a wrench)

Posted on Dec 01, 2010

  • 749 Answers

SOURCE: 2005 Chevrolet Cobalt in "limp home mode" code 606

P0606 indicates Control module internal performance. GM is indicating of the replacement ECM. Once replacement is completed reprogramming the ecm is necessary. Locally a few auot parts stores can reflash the ECM.May want to check with a NAPA or Carquest for this otherwise dealer is probably the only option.

  • Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
  • Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  • jsmes1027_30.gif
  • Disconnect the small engine control module (ECM) harness connector (3) from the ECM.
  • Remove the bolt retaining the large ECM connector to the ECM.
  • Disconnect the large ECM harness connector (4) from the ECM.
  • jsmes1027_31.gif
    Notice: Control module damage may result when the metal case contacts battery voltage. DO NOT contact the control module metal case with battery voltage when servicing a control module, using battery booster cables or when charging the vehicles battery.
  • Use the retaining tab to release the ECM from the underhood junction block bracket.

  • Reverse process for installation

    Posted on Dec 11, 2010

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    1996 ford explorer stuck in 4whl dr low

    this may be no help atall, but i had a GMC pickup once, and there is a vacuum switch that was stuck and that was causing my problem. it was around a $300 dollar fix, and that was 8 years ago, so i imagine it is quite a bit more expensive now.

    Dec 23, 2008 | 1996 Ford Explorer

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