P1682 on Chevrolet

Engine computer’s two ignition voltage feeds disagree (GM)

This page covers only what differs on Chevrolet. For what P1682 means, the ranked causes and the test order, see the P1682 guide.

What's different on Chevrolet

Chevrolet

  • 2013–2017 · Traverse

    Supported by vehicle data

    GM bulletins 19NA276 and PIT5643 link P1682 (often with P0689) to arcing or corrosion at the underhood fuse block, with reduced power or a stall. Whether the bulletin is still current is not verified.

  • 2009–2013 · Traverse

    Supported by vehicle data

    On earlier models GM lists P1682 with battery draw and no start. Whether the bulletin is still current is not verified.

  • 2014–2015 · Impala

    Supported by vehicle data

    GM PIC5971A points to the KR75 engine controls ignition relay for intermittent crank or no start with P1682. Whether the bulletin is still current is not verified.

  • 19NA276Status unverified

    Reduced engine power and/or stall with P1682 and/or P0689

    2013–2017traverse · issued · NHTSA 10170495

    Repair information for reduced power or stall with P1682 and/or P0689. Also covers Buick Enclave and GMC Acadia.

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

  • PIT5643Status unverified

    P0689 and/or P1682: arcing or corrosion at the fuse block

    2013–2014enclave · issued · NHTSA 10151875

    Check for arcing or corrosion on terminal 51 of the X3 connector at the underhood fuse block. Also covers Acadia and Traverse.

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

  • PIT4649BStatus unverified

    SES MIL with P1682, battery draw and/or no start

    2007–2013acadia · issued · NHTSA 10245303

    Also covers Enclave, Outlook and Traverse.

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

  • PIP5729Status unverified

    SES lamp with P1682 (Ignition 1 Switch Circuit 2)

    2019–2020silverado-2500, tahoe, suburban · issued · NHTSA 10176315

    May be caused by a faulty ignition relay or underhood fuse block terminal; P0101 may also be stored. Also covers Sierra, Yukon and Escalade.

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

  • PIC5971AStatus unverified

    Intermittent crank/no start with P1682

    2014–2015impala · issued · NHTSA 10059179

    Possible cause the KR75 engine controls ignition relay.

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

  • PI1422Status unverified

    Intermittent crank/no start in cold climates, P1682

    2011–2015cruze · issued · NHTSA 10113563

    Also covers Buick Verano.

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

  • PIT5546EStatus unverified

    Water in headlamp connections: dead battery, no crank, P1682

    2016–2019silverado-1500 · issued · NHTSA 10160689

    A short from water in the headlamp keeps modules awake and drains the battery. Also covers Sierra 1500.

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

Sources and review

  1. GM bulletin 19NA276: reduced engine power and/or stall with P1682 and/or P0689 (2013–2017 Enclave, Traverse, Acadia) — General Motors / NHTSA ,
  2. GM PIT5643: P0689 and/or P1682, arcing or corrosion at X3 terminal 51 of the underhood fuse block (2013–2014 Enclave, Acadia, Traverse) — General Motors / NHTSA ,
  3. GM PIT4649B: SES MIL with P1682, battery draw and/or no start (2007–2013 Acadia, Enclave, Outlook, Traverse) — General Motors / NHTSA ,
  4. GM PIC5971A: intermittent crank/no start with P1682, engine controls ignition relay (2014 Impala) — General Motors / NHTSA ,
  5. GM PI1422: intermittent crank/no start in cold climate, P1682 (2011–2015 Cruze, Verano) — General Motors / NHTSA ,
  6. GM PIT5253A: intermittent crank/no start with P1682, engine controls ignition relay (2014 Silverado 1500, Sierra 1500) — General Motors / NHTSA ,
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.