Question about 2003 Chevrolet Silverado 2500HD

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SPEEDO INOP,TRANS IN LIMP MODE,WITH NO CODES

2003 CHEVROLET 6.6 DIESEL AUTO DUMP BODY

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When the same thing happened on my '96 Concord, it turned out to be a defective IGNITION SWITCH!!

Mine would drop into limp mode randomly and unexpectedly, even at highway speeds! Very scary. Independent shops had no clue. Chrysler dealer required two visits before they nailed it.

Posted on Dec 10, 2014

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Check speed sensor on tranny

Posted on Sep 12, 2009

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1 Answer

Irratic engine power some times goes into a limp mode at35oo rpms what causes this


Has to do with the transmission. Can be wiring/plugs from the PCM to trans, wiring inside the trans, or a solenoids inside the trans is shorting out. Have the codes read. Check the trans fluid also. When it gets low, it can cause a pressure code. This will throw it into limp mode.

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I have a 2002mazda atenza everything electric Sims to be wrong first the alternator overcharged now the engine light is on the Speedo does not work and the AT light comes on putting the gearbox into limp...


any time vehicle trans codes are present, vehicle will go into limp mode. speed sensor mailfuction can cause speed o meter and shift operation problems

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04 ram will not shift past 35 mph


it may not be a transmission problem. have you checked for fault codes to make sure it is not in limp mode? limp mode keeps vehicle from accelerating properly because the ECM has put the system at a limited setting to keep the engine running but not to its full potential.

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Wut is a po700 code on a 2004 doge intreped and how do i fix it


The codes mean P0700 Transmission control system malfunction. Unless you've had an automatic transmission apart before I don't recommend it to do it yourselfers. Better to get a professional opinion and avoid really messing it up. That solenoid is part of the valve body and replacing the valve body requires special tools and a bit of expertise. good luck,

Jun 06, 2010 | 2003 Dodge Intrepid

1 Answer

4L60E Shifts fine in 1st, 2nd, & 3rd but will not shift into OD


The EMC detected and problem so it's in limp mode, As long as it's in limp mode the 4th and OD will not activate. Take care not to burn up the transmission by running it hard while your in the limp mode.
Your going to have to get the truck scanned to clear any codes and why there are DTC codes. Auto Zone scan for free and most auto shops charge $10.00 to $20.00 to scan sine they want the business.
If you want to clear the codes your self you can put the ignition to the run position and pull the ECM (Batt) fuse out for 20 sec and place it back in then start the truck. It may stall but let it, just start it again and this would have cleared all the DTC code history.
The transmission should be running fine unless there is a problem and the service engine light will be on again and you'll be in limp mode still with an updated DTC in the ECM.
Good luck and hope this helps.

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1 Answer

2002 Chrysler 300m transmission goes into "Limp-mode"


2002 has a known solenoid problem. The solenoid pack must be a new type. They have dates printed on them. make sure it has a date after 2003.

Mar 17, 2009 | 2003 Chrysler 300M

1 Answer

2003 grand caravan transmission will not shift out of low


it sounds as though your transmission input and output sensors are faulty.they are located on the driver side of transmission.input at front of trans.output at rear of transmission. normally if input sensor is faulty trans will stay in limp mode. if output sensor is faulty speedo will not register. they both resemble temp sensors with elec connectors

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1995 Buick Lesabre Speedo inop


It may be a faulty speedometer with a short inside, or a short on speedometer wirings or connector.

Whenever car vibration cause the wiring to short, there you lose speedometer and trans functionality.

You need to access the speedometer connector and wirings to
instrument panel to fix this.

Feb 01, 2009 | 1995 Buick LeSabre

1 Answer

1995 buick lesabre Speedo inop


I would have the transmission shop check out the transmission.
The transmission may have a soleniod issue.

Feb 01, 2009 | 1997 Buick LeSabre

1 Answer

Limp mode


Have u checked w/ scan tool for codes? If not, have garage, dealer, or parts store (free service at most parts stores) check for stored codes, and as u know, Chrysler is known for their c_rappy trannys,. I just had mine rebuilt at 125k (I changed the fluid and filter every 30k, but still failure). Limp mode is to protect from further damage, so something is going on. If no stored codes, drop the trans pan, check for metal in pan and on magnet, color of fluid, burnt odor? Let me know what u find. good luck

Aug 30, 2008 | 2003 Chrysler Voyager

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