DTC B3611, B3612, B3613, B3614, B3615 and B3616. GMC Truck Envoy

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2004 🢒 Envoy - 4WD 🢒 DTC 🢒 DTC B3611, B3612, B3613, B3614, B3615 and B3616

Circuit Description

The power roof open switch, power roof close switch, cargo area exit switch, end gate window switch up, end gate window switch down and end gate window switch express down signal circuits provide inputs to the power roof module when the appropriate switch is activated. These inputs allow the roof module to detect a switch request. The roof module provides both power and ground for these switches. If the roof module detects a short to ground on any of these circuits, a DTC is set.

Conditions for Setting the DTC

The power roof module detects a short to ground on a switch signal circuit.

Action Taken When the DTC Sets

•	Stores a current DTC B3611, B3612, B3613, B3614, B3615 or B3616 in roof module memory

•	Stores a history DTC B3611, B3612, B3613, B3614, B3615 or B3616 in roof module memory

Conditions for Clearing the DTC

•	The power roof module no longer detects a current DTC B3611, B3612, B3613, B3614, B3615 or B3616 in roof module memory.

•	The DTC is cleared using a scan tool.

Diagnostic Aids

•	The following conditions may cause an intermittent malfunction:

-	There is an intermittent short to ground in a switch signal circuit.

-	A switch is shorted to ground internally.

•	If the DTC does not reset after the code is cleared, then the problem may be intermittent. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

Tests for the normal state of the appropriate switch using a scan tool. The scan tool will display the normal state as Inactive or Idle.

Tests for a shorted switch. If a switch is shorted, the state will change to Inactive or Idle when the switch is disconnected.

Tests for a short to ground in the switch signal circuit.

Step	Action	Yes	No
Schematic Reference: Sunroof Schematics Connector End View Reference: Power Roof Systems Connector End Views
1	Did you perform the Power Roof Diagnostic System Check?	Go to Step 2	Go to Diagnostic System Check - Power Roof
2	Install a scan tool. Turn ON the ignition, with the engine OFF. With a scan tool, observe the appropriate switch parameter in the power roof module data list. Does the scan tool display Inactive or Idle?	Go to Step 5	Go to Step 3
3	Turn OFF the ignition. Disconnect the appropriate switch. Turn ON the ignition, with the engine OFF. With a scan tool, observe the appropriate switch parameter in the power roof module data list. Does the scan tool display Inactive or Idle?	Go to Step 6	Go to Step 4
4	Test the appropriate switch signal circuit 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 5
5	Inspect for poor connections at the harness connector of the power roof module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 9	Go to Step 7
6	Inspect for poor connections at the harness connector of the appropriate switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 9	Go to Step 8
7	Perform the power roof relearn procedure. Refer to Power Roof Relearn . Replace the power roof module. Refer to Moveable Roof Panel Control Module Replacement . Did you complete the replacement?	Go to Step 9	--
8	Replace the appropriate switch. Refer to Endgate Window, Midgate Window, and Rear Moveable Roof Switch Assembly Replacement - Overhead Console . Did you complete the replacement?	Go to Step 9	--
9	Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset?	Go to Step 2	System OK