P182E
Internal Mode Switch Invalid Range
What it means
P182E. Internal Mode Switch Invalid Range. This Chevy-enhanced code applies to Silverado, Sierra, Tahoe, Yukon, Suburban, Equinox, Traverse.
Findings, check these first
- Faulty internal mode switch on the control valve body
- Misadjusted shift cable leaving the manual valve between detents
- Metallic debris on control solenoid valve assembly pins
- Open or short in the IMS A/B/C/P signal circuits
- Faulty control solenoid with body and TCM valve assembly
Standard procedure
- Verify shift cable adjustment and IMS A/B/C/P parameters with a Tech2 or GDS2 scan tool
- Check ECM Park/Neutral switch status in all ranges
- Disconnect the IMS at the control solenoid assembly and confirm all signals read HI
- Jumper each range signal to ground and confirm the scan tool reads LOW
- Replace the IMS or control solenoid valve assembly based on test results
Look up another code
Press / to jump to the box. Chevy-enhanced powertrain, body, chassis and network codes.
Sources and review
Review: no source links are recorded for this entry.
Last updated 2026-09-13.
Report a correction for P182E. Include your vehicle, the issue and a source if you have one.