What does P1761 mean on a Chevy?

P1761. Up And Down Shift Switch Signal Circuit. Applies to Avalanche, Silverado, Tahoe, Malibu, Traverse.

What causes P1761 on a Chevy?

Driver shift control TAP switch failure in the shift lever assembly Rolling-count mismatch between the BCM and the TCM on the TAP signal Corroded shift lever switch connector from spilled drinks Internal TCM fault in the control solenoid valve assembly

How do I fix P1761 on a Chevy?

Verify TAP up and downshift operation responds on a Tech2 or GDS2 Inspect the shift lever switch and connector for damage or contamination Check BCM to TCM serial data integrity since the fault is a rolling-count error Rule out companion U-codes before condemning the solenoid valve assembly Service the control solenoid valve assembly only after external circuits prove good

Code

P1761

Up And Down Shift Switch Signal Circuit

Category: Powertrain - Transmission
Severity: Check Engine Light
Applies to: Avalanche, Silverado, Tahoe, Malibu, Traverse
Related: No single generic twin. See OBD Codes List

What it means

P1761. Up And Down Shift Switch Signal Circuit. This Chevy-enhanced code applies to Avalanche, Silverado, Tahoe, Malibu, Traverse.

Findings, check these first

Driver shift control TAP switch failure in the shift lever assembly
Rolling-count mismatch between the BCM and the TCM on the TAP signal
Corroded shift lever switch connector from spilled drinks
Internal TCM fault in the control solenoid valve assembly

Standard procedure

Verify TAP up and downshift operation responds on a Tech2 or GDS2
Inspect the shift lever switch and connector for damage or contamination
Check BCM to TCM serial data integrity since the fault is a rolling-count error
Rule out companion U-codes before condemning the solenoid valve assembly
Service the control solenoid valve assembly only after external circuits prove good

Look up another code

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Sources and review

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Last updated 2026-09-19.

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