Chevrolet P1550: Stepper Motor Cruise Control Circuit Malfunction

Is your scanner showing Chevrolet P1550?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Chevrolet P1550: Stepper Motor Cruise Control Circuit Malfunction

OVERVIEW
Severity
:
Medium
DIY Difficulty Level
:
Advanced
Repair Cost
:
$450-$600
Can I Still Drive?
:
Yes (Short-term only)

What Does The Chevrolet P1550 Code Mean?

Engine started; SMCC Cruise commanded off, and the PCM detected the Cruise Status signal indicated that the Cruise Control was engaged under these conditions.

What Are The Potential Causes Of The Chevrolet P1550 Code?

  • Cruise control inhibit circuit is open or shorted to ground
  • SMCC II cruise control module is damaged or has failed
  • PCM has failed

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> GM Genuine Parts 12633238 Engine Control Module
>>> New NOS GM #25075766 Cruise Control Stepper Motor Controller Module

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Chevrolet P1550, DTCDECODE.

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