P182E Internal mode switch reports an invalid range in a GM automatic transmission

GM P182E internal mode switch invalid range

Severity not verified — if the car runs badly, have it inspected

Owners report limp mode and the transmission acting as if in neutral while driving with this code, but we found no source on how long it is safe to drive.

It gets more serious if:

  • Inspect soon: The transmission drops into neutral, goes into limp mode or the gear indicator disappears.

Source: how we rate severity

P182E in short

On Buick, Cadillac, Chevrolet and GMC vehicles, P182E means the internal mode switch is reporting an invalid gear range to the transmission computer. A shift cable that is out of adjustment or a faulty mode switch inside the transmission are the usual causes. Owners report limp mode, so get it checked soon.

The internal mode switch is bolted to the shift cable and tells the transmission computer whether the lever is in park, reverse, neutral or drive. If its signals match no valid position, the computer stores P182E.

A repair writer ties P182E to GM bulletin 17-NA-084 and lists an out-of-adjustment shift cable or a faulty switch as the causes. The switch sits inside the transmission, so replacing it is a shop job. GM bulletin 17-NA-084 covers a procedure for completing the circuit and system verification steps.

Owner complaints on Traverse, Equinox, Enclave and Sierra models describe the check engine light, limp mode and the transmission acting as if in neutral, often with P0700 stored too. Because of that, do not rely on clearing the code.

Pick your make

P182E is a manufacturer-specific code: its meaning depends on who built the car.

Other makes: meaning not verified. Check with a scan tool that reads manufacturer definitions.

Most likely causes

  1. Faulty internal mode switch inside the transmission

    Supported by vehicle data
    Why it ranks here
    A repair writer says a bad internal mode switch is the usual cause and the GM bulletin covers P182E; the bulletin itself was only read as a summary.
    What would change this
    Rises if live range data disagrees with the lever position. Falls if the switch signals match each lever position.

  2. Shift cable out of adjustment

    Supported by vehicle data
    Why it ranks here
    The switch is moved by the shift cable, so a poorly adjusted cable can feed it an invalid position, per the repair writer.
    What would change this
    Rises if the lever and displayed gear disagree. Falls if the cable is correctly adjusted and the code returns.

  3. Transmission computer fault

    Possible — needs testing
    Why it ranks here
    One shop quoted the switch and the computer together on a Traverse; no source says the computer is a common cause.
    What would change this
    Rises only after the switch and cable test good. Falls if the switch is at fault.
    How to test the transmission control module (tcm)

What to test first

Start at step 1. Each result tells you what it means and where to go next.

  1. Read all codes and freeze-frame data, and note whether P0700 or C0561 are stored with P182E.

    Low riskTool: OBD-II scan tool

    • IfP0700 is stored too

      It meansThe computer asked for the check engine light because of a transmission fault; continue with the switch and cable.

      Go to step 2

    • IfP182E is the only code

      It meansCheck the cable and switch.

      Go to step 2

  2. Have a shop check the shift cable adjustment and compare the gear range shown by the scan tool with the lever position.

    Best left to a shopTool: scan tool with live data

    Warning:The switch is inside the transmission, so the work is for a shop.

Symptoms

  • Check engine light on, sometimes flashing briefly
  • No gear indicator (PRNDL) display or hard shifting
  • Limp mode or neutral-like feel while driving Gets more serious: stop and have it checked.

Compare with: Check engine light with loss of power

How to fix

  1. Do not clear the code and drive on; have the shift cable and mode switch checked first.

Parts and cost context

  • Transmission control module (TCM):The mode switch and cable are cheaper checks than the computer.

Labor varies by vehicle and shop; get a quote before you approve a repair.

Compare used part prices on PartPriceGuide

On your vehicle

Buick

  • 2009–2017 · Regal

    Supported by vehicle data

    Bulletin 17-NA-084 names P182E on the Buick Regal. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2009–2017 · Enclave

    Supported by vehicle data

    Bulletins 17-NA-084, PI0269B name P182E on the Buick Enclave. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2009–2017 · LaCrosse

    Supported by vehicle data

    Bulletins 17-NA-084, PI0269B name P182E on the Buick Lacrosse. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 17-NA-084Status unverified

    This technical bulletin provides a procedure to Complete the Circuit/System Verification steps to correct a

    2009–2017enclave, lacrosse, regal · issued · NHTSA 10138071

    GM procedure for a check engine light with P182E: complete the circuit and system verification steps. Only the NHTSA flat-file summary was read, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • PI0269BStatus unverified

    This preliminary bulletin provides a procedure to replace the IMS if the code can not be reset, with DTC

    2009–2011equinox, malibu, traverse · issued · NHTSA 10135295

    GM procedure for a check engine light with P182E: complete the circuit and system verification steps. Only the NHTSA flat-file summary was read, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Chevrolet

  • 2009–2017 · Equinox

    Supported by vehicle data

    Bulletins 17-NA-084, PI0269B name P182E on the Chevrolet Equinox. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2009–2017 · Express

    Supported by vehicle data

    Bulletins 17-NA-084, PI-0110 name P182E on the Chevrolet Express. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2009–2017 · Traverse

    Supported by vehicle data

    Bulletins 17-NA-084, PI0269B name P182E on the Chevrolet Traverse. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2009–2017 · Impala

    Supported by vehicle data

    Bulletin 17-NA-084 names P182E on the Chevrolet Impala. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2009–2017 · Malibu

    Supported by vehicle data

    Bulletins 17-NA-084, PI0269B name P182E on the Chevrolet Malibu. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2010 · Corvette

    Supported by vehicle data

    Bulletin PI-0110 names P182E on the Chevrolet Corvette. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2010 · Tahoe

    Supported by vehicle data

    Bulletin PI-0110 names P182E on the Chevrolet Tahoe. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2010 · Suburban

    Supported by vehicle data

    Bulletin PI-0110 names P182E on the Chevrolet Suburban 1500. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2010 · Camaro

    Supported by vehicle data

    Bulletins PI-0110, PIP-4678B name P182E on the Chevrolet Camaro. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2010 · Silverado

    Supported by vehicle data

    Bulletin PI-0110 names P182E on the Chevrolet Silverado. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2010–2013 · Traverse

    Supported by vehicle data

    Owners of 2010 and 2013 Traverses report P182E with C0561 and P0700, and one shop quoted the mode switch and computer.

  • 2010 · Equinox

    Supported by vehicle data

    A 2010 Equinox owner reports P0700 and P182E with the transmission acting as if in neutral.

  • 17-NA-084Status unverified

    This technical bulletin provides a procedure to Complete the Circuit/System Verification steps to correct a

    2009–2017enclave, lacrosse, regal · issued · NHTSA 10138071

    GM procedure for a check engine light with P182E: complete the circuit and system verification steps. Only the NHTSA flat-file summary was read, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • PI0269BStatus unverified

    This preliminary bulletin provides a procedure to replace the IMS if the code can not be reset, with DTC

    2009–2011equinox, malibu, traverse · issued · NHTSA 10135295

    GM procedure for a check engine light with P182E: complete the circuit and system verification steps. Only the NHTSA flat-file summary was read, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • PI-0110Status unverified

    CADILLAC/CHEVROLET/GMC: PRNDL DISPLAY INOPERATIVE. THE MIL IS ILLUMINATED. UPON FURTHER INVESTIGATION,

    2010camaro, corvette, express, silverado, suburban-1500, tahoe · issued · NHTSA 10034632

    GM procedure for a check engine light with P182E: complete the circuit and system verification steps. Only the NHTSA flat-file summary was read, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • PIP-4678BStatus unverified

    CHEVROLET: WATER IN TRANSMISSION, NO FORWARD GEARS, TCC SHUDDER, HARSH SHIFT, DTC U0073, U0100, U0101, P182E,

    2010camaro · issued · NHTSA 10034433

    GM procedure for a check engine light with P182E: complete the circuit and system verification steps. Only the NHTSA flat-file summary was read, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

GMC

  • 2009–2017 · Acadia

    Supported by vehicle data

    Bulletins 17-NA-084, PI0269B name P182E on the Gmc Acadia. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2009–2017 · Terrain

    Supported by vehicle data

    Bulletins 17-NA-084, PI0269B name P182E on the Gmc Terrain. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2010 · Savana

    Supported by vehicle data

    Bulletin PI-0110 names P182E on the Gmc Savana. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2010 · Yukon XL

    Supported by vehicle data

    Bulletin PI-0110 names P182E on the Gmc Yukon Xl 1500. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2010 · Yukon

    Supported by vehicle data

    Bulletin PI-0110 names P182E on the Gmc Yukon. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2010 · Sierra

    Supported by vehicle data

    Bulletin PI-0110 names P182E on the Gmc Sierra. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2017 · Sierra 1500

    Supported by vehicle data

    A 2017 Sierra 1500 owner reports P0700 and P182E with limp mode.

  • 17-NA-084Status unverified

    This technical bulletin provides a procedure to Complete the Circuit/System Verification steps to correct a

    2009–2017enclave, lacrosse, regal · issued · NHTSA 10138071

    GM procedure for a check engine light with P182E: complete the circuit and system verification steps. Only the NHTSA flat-file summary was read, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • PI0269BStatus unverified

    This preliminary bulletin provides a procedure to replace the IMS if the code can not be reset, with DTC

    2009–2011equinox, malibu, traverse · issued · NHTSA 10135295

    GM procedure for a check engine light with P182E: complete the circuit and system verification steps. Only the NHTSA flat-file summary was read, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • PI-0110Status unverified

    CADILLAC/CHEVROLET/GMC: PRNDL DISPLAY INOPERATIVE. THE MIL IS ILLUMINATED. UPON FURTHER INVESTIGATION,

    2010camaro, corvette, express, silverado, suburban-1500, tahoe · issued · NHTSA 10034632

    GM procedure for a check engine light with P182E: complete the circuit and system verification steps. Only the NHTSA flat-file summary was read, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Cadillac

  • 2010–2017 · SRX

    Supported by vehicle data

    Bulletins 17-NA-084, PI0269B name P182E on the Cadillac Srx. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2010–2017 · XTS

    Supported by vehicle data

    Bulletin 17-NA-084 names P182E on the Cadillac Xts. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2010–2011 · Escalade EXT

    Supported by vehicle data

    Bulletin PI-0110 names P182E on the Cadillac Escalade Ext. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2010–2011 · Escalade

    Supported by vehicle data

    Bulletin PI-0110 names P182E on the Cadillac Escalade. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2010–2011 · Escalade ESV

    Supported by vehicle data

    Bulletin PI-0110 names P182E on the Cadillac Escalade Esv. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 17-NA-084Status unverified

    This technical bulletin provides a procedure to Complete the Circuit/System Verification steps to correct a

    2009–2017enclave, lacrosse, regal · issued · NHTSA 10138071

    GM procedure for a check engine light with P182E: complete the circuit and system verification steps. Only the NHTSA flat-file summary was read, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • PI0269BStatus unverified

    This preliminary bulletin provides a procedure to replace the IMS if the code can not be reset, with DTC

    2009–2011equinox, malibu, traverse · issued · NHTSA 10135295

    GM procedure for a check engine light with P182E: complete the circuit and system verification steps. Only the NHTSA flat-file summary was read, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • PI-0110Status unverified

    CADILLAC/CHEVROLET/GMC: PRNDL DISPLAY INOPERATIVE. THE MIL IS ILLUMINATED. UPON FURTHER INVESTIGATION,

    2010camaro, corvette, express, silverado, suburban-1500, tahoe · issued · NHTSA 10034632

    GM procedure for a check engine light with P182E: complete the circuit and system verification steps. Only the NHTSA flat-file summary was read, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Saturn

  • 2009–2010 · Outlook

    Supported by vehicle data

    Bulletin PI0269B names P182E on the Saturn Outlook. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2009–2010 · Vue

    Supported by vehicle data

    Bulletin PI0269B names P182E on the Saturn Vue. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2009–2010 · Aura

    Supported by vehicle data

    Bulletin PI0269B names P182E on the Saturn Aura. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • PI0269BStatus unverified

    This preliminary bulletin provides a procedure to replace the IMS if the code can not be reset, with DTC

    2009–2011equinox, malibu, traverse · issued · NHTSA 10135295

    GM procedure for a check engine light with P182E: complete the circuit and system verification steps. Only the NHTSA flat-file summary was read, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Pontiac

  • 2009 · G6

    Supported by vehicle data

    Bulletin PI0269B names P182E on the Pontiac G6. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • 2009 · Torrent

    Supported by vehicle data

    Bulletin PI0269B names P182E on the Pontiac Torrent. GM says to complete the circuit and system verification steps. Only the bulletin summary was read.

  • PI0269BStatus unverified

    This preliminary bulletin provides a procedure to replace the IMS if the code can not be reset, with DTC

    2009–2011equinox, malibu, traverse · issued · NHTSA 10135295

    GM procedure for a check engine light with P182E: complete the circuit and system verification steps. Only the NHTSA flat-file summary was read, not the bulletin itself.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • P0700Transmission module requests the check engine light

    Shares causes Supported by vehicle data

    Owners report P0700 stored with P182E; P0700 only says a transmission fault asked for the light.

  • C0561Chassis system disabled because another module reported a problem

    Same system Supported by vehicle data

    A 2010 and a 2013 Traverse owner report C0561 stored with P182E.

All Transmission codes

Sources and review

  1. How to fix the P182E code on GM vehicles — Rick's Free Auto Repair Advice (Rick Muscoplat) ,
  2. NHTSA complaint 1318373: 2010 Chevrolet Equinox, P0700 P182E — NHTSA (owner complaint)
  3. NHTSA complaint 1854815: 2017 GMC Sierra 1500, P0700 P182E — NHTSA (owner complaint)
  4. GM 17-NA-084: check engine light on with DTC P182E — General Motors ,
  5. NHTSA complaint 1290006: 2010 Chevrolet Traverse, P182E and C0561 — NHTSA (owner complaint)
  6. NHTSA complaint 1101940: 2013 Chevrolet Traverse, C0561 P0700 P182E — NHTSA (owner complaint)
  7. P182E code view: internal mode switch invalid range error (GM) — TAT scan data
  8. NHTSA complaint 1596684: 2014 Buick Enclave, P0700 P182E P0306 — NHTSA (owner complaint)
  9. Cal. Code Regs. Tit. 13, § 1968.2 — Malfunction and Diagnostic System Requirements (OBD II) — California Air Resources Board (via Cornell LII)
Last reviewed
Written by
Saurabh K.
Editorial review
Pending
Technician review
Technician review pending

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error

My Car

Pick your car and code pages will point out notes and bulletins for it. Saved only in this browser.

Fill this in from your VIN

Used once to identify your engine; not stored.