Engine-Codes - Gmc - P0804 GMC

P0804 GMC Code - Skip Shift Lamp Control Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|P0804 GMC code possible causes

  • Faulty Skip Shift Lamp
  • Skip Shift Lamp harness is open or shorted
  • Skip Shift Lamp circuit poor electrical connection

|How is the P0804 GMC code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the cost to diagnose the P0804 GMC code

Labor: 1.0

The cost to diagnose the P0804 GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|When is the P0804 GMC code detected?

When the Powertrain Control Module (PCM) commands the control circuit to a component OFF, the voltage potential of the circuit should be high (near battery voltage). If the fault detection circuit senses a voltage other than what is expected, the fault line status changes causing theP0804 code is set.

|What are P0804 GMC code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What is P0804 GMC code meaning?

An ignition voltage is supplied to the Skip Shift Lamp. The Powertrain Control Module (PCM) controls the lamp by grounding the control circuit via an internal switch called a driver. The driver supplies the ground for the component being controlled. Each driver has a fault line which the PCM monitors. When the PCM commands a component ON, the voltage of the control circuit should be low (near 0 volts).

|Need more information with the P0804 GMC code?

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|Need help with a P0804 GMC code?

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