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Makes 🢒 GMC_Truck 🢒 2001 🢒 GMC K Sierra - 4WD 🢒 Bulletins 🢒 SMU - Revised DTC P0094 Table

SMU - Revised DTC P0094 Table

Subject:Revised DTC P0094 Table

Models:2001 Chevrolet and GMC C/K Pickup Models (Silverado, Sierra)
with 6.6L Engine (VIN 1 -- RPO LB7)


This bulletin is being issued to revise the DTC P0094 table in the Engine Controls-6.6L sub-section of the Service Manual. Please replace the current information in the Service Manual with the following information.

The following information has been updated within SI. If you are using a paper version of this Service Manual, please make a reference to this bulletin on the affected page.

Step

Action

Values

Yes

No

Schematic Reference: Engine Control Schematics

1

Did you perform the Diagnostic System Check-Engine Controls?

--

Go to Step 2

Go to Diagnostic System Check-Engine Controls

2

Is DTC P0093 also set?

--

Go to DTC P0093

Go to Step 3

3

Attempt to start the engine.

Does the engine start and continue to run?

--

Go to Step 4

Go to Engine Cranks but Does Not Run

4

Is the customer concern also a surging idle?

--

Go to Fuel System Diagnosis-High Pressure Side

Go to Step 5

5
  1. Start and idle the engine.
  2. Observe the FRP regulator fuel flow with a scan tool.

Does the FRP regulator fuel flow measure more than the specified value?

12,000 mm³

Go to Step 6

Go to Diagnostic Aids

6

Test the fuel pressure regulator solenoid control circuit between the ECM and the fuel pressure regulator for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 9

Go to Step 7

7

Test for an intermittent or poor connection at the ECM. Refer to Testing for Intermittent and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 9

Go to Step 8

8

Replace the ECM. Refer to Engine Control Module (ECM) Replacement.

Did you complete the replacement?

--

Go to Step 9

--

9
  1. Clear the DTCs with a scan tool.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.

Did the DTC fail this ignition?

--

Go to Step 2

Go to Step 10

10

Observe the Capture Info with a scan tool.

Are there any DTCs that have not been diagnosed?

--

Go to Diagnostic Trouble Code (DTC) List

System OK