Location of module chevrolet express regency

The BCM - body control module controls turn signals . There is no flasher unit . Your best bet would be to take your vehicle to the dealer !
Turn Signal Lamps
The BCM 3, BCM 5, and BCM 6 fuses located in the underhood fuse block supply battery voltage to the body control module (BCM) for turn signal, hazard lamp, and stop lamp operation. Voltage from the BCM 5 fuse used for the front and rear left turn signals, voltage from the BCM 3 for the right front turn signal, while voltage from the BCM 6 fuse is used for the right rear turn signal. When the turn signal switch is place in either the LEFT or RIGHT position, ground from G303 is applied through the turn signal switch signal circuit to the BCM indicating the turn signal request. In response to this signal, the BCM applies a pulsating voltage to the front and rear turn signal lamps supply voltage circuits cycling the lamps ON and OFF. The BCM also sends a message via GMLAN to the instrument panel cluster (IPC) to cycle the turn signal indicator ON and OFF depending on the position of the turn signal switch.

Ignition ON, observe the scan tool Left Turn Signal Switch parameter while using the turn signal/multifunction switch to turn the left turn signal ON and OFF. The reading should change between Active and Inactive.

most likely a failed flasher can or flasher control module

Which I/P lights ? Instrument cluster , radio , HVAC control panel etc.... All the I/P light's are controlled by the BCM - body control module . Do you know about electronic control modules ?
DTC B2610 Passenger Compartment Dimming 1 Circuit
The body control module (BCM) receives a variable voltage signal from the instrument panel (I/P) dimmer switch requesting to illuminate the instrument panel controls illumination lamps to a desired intensity. When this occurs, the BCM directly sends a variable voltage based on the I/P dimmer switch position on the backlight lamps control circuit, instrument panel lamps dimming control circuit, and the LED dimming signal circuit.
Voltage for the backlight lamps control circuit, instrument panel lamps dimming control circuit, and the LED dimming signal circuits is from the TBC 3 fuse 16 in the underhood fuse block directly through the BCM to these circuits.

• Perform a visual inspection for loose or poor connections at all related components. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
• A short to ground in the following circuits will cause the TBC 3 fuse to open:
- The backlight lamps control
- The instrument panel lamps dimming control
- The LED dimming signal
- Battery positive voltage from the underhood fuse block TBC 3 fuse
• An open in the TBC 3 fuse will cause the BCM to set the following DTC:
- B0951
- B2610
- B2625

DTC B2615 Passenger Compartment Dimming 2 Circuit
DTC B2620 Display Dimming Pulse Width Modulation (PWM) Input Circuit
DTC B2625 Display Dimming Pulse Width Modulation (PWM) Output Circuit
Do you know how to Test for a high resistance, an open, a short to ground, or a short to voltage in the following circuits. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
• 5-volt reference
• The dimming input
• The dimming return

Tow/Haul mode enables the operator to achieve enhanced shift performance when towing or hauling a load. When tow/haul mode is selected, the tow/haul switch input signal to the body control module (BCM) is momentarily toggled to zero volts. This signals the powertrain control module (PCM) or transmission control module (TCM) to extend the length of time between upshifts and increase transmission line pressure. Cycling the tow/haul switch again disables tow/haul mode and returns the transmission to a normal shift pattern.

After reading all the pertinent info. to your problem, doing testing ,Checking for DTC'S -diagnostic trouble codes in the BCM , checking power and ground's for the BCM an checking voltage at the tow / haul switch to and from the BCM .is where i would start . Do you know how to do electrical testing ? Read a wire diagram ? If not there are videos on youtube for learning how to do basic automotive electrical testing , how to read wiring diagrams etc... You can find free wiring diagrams at
http://www.bbbind.com/free_tsb.html The only thing with this is you don't have info. saying where componet location's are . This is were factory service info would be helpful

Chevrolet Express Questions - 2011 Brake and turn fuse ...

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CarGurusJan 23, 2011 - 2011 Brake and turn fuse - Were is the fuse for brake and turn on ...location). and two sets of fuses for the brake and turn signal lamps, one in eachlocation. ... i mean for 2006 express extended van .... in fuel pump plug and its hot always even if you pull fuse and relay. ... Used Chevrolet Express Cargo".

Ford E-Series Cargo Questions - Where is the turn signal ...

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CarGurusWhere is the turn signal relay on a 2010 e350 located - I need to replace the turn signal relay, where is it located? ... Asked by dogfoodman Sep 24, 2013 at 08:38 AM about the 2007 Ford E-Series Cargo E-350 Super Duty ... Used GMC Savana Cargo". 43 Great ... Copyright © 2006-2015 CarGurus ®, Inc., All Rights Reserved.

LOCATION OF THE TURN SIGNAL RELAY? - Fixya

Body Control Module (BCM) is located in the
Lower right side of the instrument panel behind the knee bolster !

It's not the BCM. Replace the turn signal.

it will need a chime module (what you call a intergration module) - mainly so you don't leave the keys in the ignition and you can hear the turn signal clicker.

Turn signal doesn't have a relay. If your talking about the flasher, it is built into the hazard switch. Which yours may or may not be in the turn signal switch. If the hazard is on the column, then it is in the switch. In the dash, it's not. I haven't worked on the express, but that's where GM puts them.

there is a light module under the dash that works all that stuff they tend to get moisture in them and short out, its located above the gas pedal about waste high while seated