2008 Buick Enclave; front passenger, no power to window and lock controls, and no power to passenger side mirror. Additionally, passenger heated seats do not operate. From driver seat control, I cannot operate passenger window or mirror. Please advise which fuse and/or relay I should check? Thanks, Alex

You say the driver window works? wouldn't be a main fuse or fusible link then -driver door locks and window wouldn't work either. Each door has a module inside (computer) . The driver door has a circuit breaker power feed an a fuse DDM fuse 10amp located in rear junction block circuit breaker is located in under hood maxi fuse block. The circuit breaker also feeds battery voltage to the other door modules too. PDM - passenger door module fuse 10amp located in the instrument panel fuse box and the RDM - rear door module RDM fuse 10amp located in the rear fuse box - under the back seat.

Each power window is connected to a permanent magnet motor. The motor raises or lowers the glass when the door module applies voltage to the motor. The direction the motor turns depends on the polarity of the supply voltage provided by the associated door module. The 2 front doors have their own separate modules. The rear seat contains a single module, which controls both of the rear power windows.
A serial digital communications link, called the simple bus interface, is used for communications between door modules and the driver's door power window switches. The use of serial digital communications allows the use of a single wire to convey switching information between the power door lock switch and the driver's door module (DDM). The serial communication is also used in order to transmit switching information from the DDM to the other 2 door modules.
The door modules apply battery voltage of the correct polarity to the respective window motor when any local, or power door lock switch, UP switch is operated, driving the window up. Battery voltage is applied to the respective window motor in the opposite polarity when any local, or power window switch, DOWN switch is operated, driving the window down.

Driver Door Module (DDM)
The driver's door module (DDM) directly controls the driver's door window motor and the express down window feature. The DDM sends window UP/DOWN messages received from the power door lock switch to the passenger door module (PDM) and to the rear door module (RDM) over the simple bus interface (SBI) line. The DDM also contains a class 2 data link which communicates with the other vehicle system modules. The left front power door locks and the outside power mirror are also controlled through the DDM.
Passenger Door Module (PDM)
The passenger door module (PDM) controls the passenger's door window motor. The PDM controls the passenger's door window directly from the right front power window switch or from instructions over the simple bus interface (SBI). The right front power door locks and the outside power mirror are also controlled through this module.
Rear Door Module (RDM)
The rear door module (RDM) controls both of the rear door window motors. The RDM controls the rear windows directly from the rear door window switches or from instructions over the simple bus interface (SBI).

Yes they run a wire loom that has wires that are not used in some models. One thing you need to check is the wire loom because it flexes every time the door opens and closes and wires can break .Also you may want to go to autozone website and make a free account, you can put in the year make and model and look for the free repair guides for wire diagrams.

From where , any switch ? driver door switch or either passenger door switch . This is a very complex system controlled by modules (microprocessors)
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The driver door switch assembly (DDSA)

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The driver door module (DDM)

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The passenger door module (PDM)

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The rear door module (RDM)

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The LH front power door lock switch

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The RH front power door lock switch

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The LH front door lock actuator

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The RH front door lock actuator

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The LH rear door lock actuator

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The RH rear door lock actuator

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The remote control door lock receiver (RCDLR)

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The power door serial data circuit

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The class 2 serial data circuit

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The DRVMDL Fuse - 10 amp

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The PDM Fuse - 10 amp

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The RRINMDL Fuse - 10 a
Class 2 and Power Door Serial Data Links
The class 2 and power door data circuits are both serial data links. The serial data circuits replace cables in the vehicle by multiplexing (time-sharing) data to and from each device over a single wire referenced to ground. If the power door serial data is lost, both the rear door module (RDM) and the passenger door module (PDM) enters the sleep mode. With the RDM and the PDM in sleep mode, no power door operations are possible.
Your best bet is to take it to the dealer or an ASE certified repair shop .

see page 2-21 in this document for reprogramming power windows.
https://www.buick.com/content/dam/Buick/north_america/usa/nscwebsite/en/home/owners/vehicle_manuals/2012/02_pdf/2012-enclave-owner-manual.pdf

CHECK FUSES FOR POWER WINDOW,CHECK FUSE FOR POWER MIRROR AND CHECK FUSE FOR POWER DOOR LOCK.IF FUSE OKAY DOOR CONTROL MODULE FAULTY ITSELF.

it may be under the back seat,,buick notorious with that..

check the fuses at the front passenger foot well, the middle one on the top that's halfway pulled is for the solenoid that releases the key. its also for the rear right turn signal so you should check the wiring there too.

The battery is under the floor behind the passenger seat. Its under the floor pan in the second row passenger floor area.There are access points under the hood for jump starting. ----- Thanks.Helpmech.

There are 2 fuse blocks. The Power Distribution Center is under the hood along the passenger side fender and has fuses and relays in it. The other is on the passenger side of the dash and has fuses and circuit breakers.
....1994 Jeep Grand Cherokee Laredo
...(Fuse Block - Passenger side of Dash)
.....1........5........9........13........17........21........25
.20 A...15 A...20 A...20 A....7.5 A....15 A....30 A
.....2........6.......10.......14........18........22........26
.15 A...15 A...10 A...20 A.... 15 A....15 A....30 A
.....3........7.......11.......15........19........23........27
.20 A...15 A...15 A....3 A......15 A....15 A....10 A
.....4........8.......12.......16........20........24........28
.15 A...15 A...15 A...20 A.....10 A...7.5 A....30 A
1)Trailer Tow Relay
2)Brake Lamps
3)Hazard Lamps
4)Security Lamp
5)Interior Lighting
6)Security Alarm Module
7)Security Alarm Relay, Security Alarm Module, Flash-to-Pass
8)Overhead Console, Keyless Entry, Radio Memory/Clock
Memory/Chime Module, Power Locks, Power Mirrors,
HEVAC and VIC
9)Rear Wiper
10)Radio
11)Cigar Lighter
12)Parking Lamps, Automatic Headlamps
13)Horn Relay
14)Power Lock Relays
15)ABS Module and Relay
16)Turn Signals
17)Heating and Air Conditioning Module
18)Airbag Module
19)Interior Mirror, Auto Headlamps, Overhead Console,
VIC/GDM Module, Heated Rear Window Relay Coil,
Illuminated Entry Relay and Chime Module
20)Heated Rear Window Switch, Overdrive Switch, Speed
Control
21)Security Alarm Module, Lamp Outage Module
22)Airbag Module, Speedometer, Tachometer, Telltales and
Gauges
23)Heated Mirror Feed, Heated Rear Window Switch
24)Instrument Panel Illumination
25)Power Seats
26)Power Windows, Power Sunroof
27)Security Alarm Module and Front Wiper
28)Heated Rear Window Relay

Power windows an locks work ok ? Do you know anything about automotive electeronic control modules ?
Power Mirror System
Power Mirror System Components
The power mirror system consists of the following components:
• Driver Door Switch (DDS)--An electronic control module with integrated switches and requires programming when replaced
• Passenger Door Switch (PDS)--An electronic control module with integrated switches, requires programming when replaced
• Power Mirror Direction Switch--Integrated into DDS and is a 4 position momentary switch that provides a signal input to the DDS for up, down, left/extend and right/retract with a mirror switch activation
• Mirror Select Switch--Integrated into DDS and is a 3 position switch that allows the operator to select the left or right mirror and also a neutral/fold position
• Left Outside Power Mirror--Contains both the vertical and horizontal mirror motors
• Right Outside Power Mirror--Contains both the vertical and horizontal mirror motors
• Body Control Module--An electronic control module that requires programming when replaced, serves as the power mode master and is the main message handler
• Memory Switch, if equipped with memory mirrors--Supplied power by the DDS and provides a voltage signal to the DDS upon a switch activation
• Horizontal and Vertical Position Sensors, if equipped with memory mirrors--Supplied a 5-volt and low reference by the DDS/PDS and provide a variable voltage signal to the DDS/PDS that is proportional to mirror position
• Powertrain Control Module (PCM), if equipped with memory mirrors--An electronic control module that requires programming when replaced and provides the message indicating transmission gear selection
• Driver Information Center (DIC), if equipped with memory mirrors--Part of the instrument cluster which is a an electronic control module that requires programming when replaced and is used to personalize the memory recall functions
• Fold Motor, in each of the outside mirrors, if equipped with power fold mirrors--Provides extend and retract movements of the mirror and is serviced as a complete mirror assembly
Each of the outside power mirrors contains 2 reversible motors to provide horizontal and vertical movement of the mirror glass. The vertical motor operates the up and down directions and the horizontal motor operates the left and right directions. If equipped with power folding mirrors, each outside power mirror will contain a reversible fold motor to operate the extend and retract functions. Each of the mirror motors are circuit breaker protected.

Do you know what DTC'S - diagnostic trouble codes are ?
DTC B1023
Circuit/System Description
The driver door switch (DDS) and front passenger door switch (PDS) each contain switches that control power door lock and window functions. The DDS also contains the control switch for the power outside rear view mirrors. These switches are integrated within the door control modules and are not serviceable as separate components. The DDS and PDS monitor these switch inputs for internal faults and set B1023 00 if any are detected.

You could have any number of problems an without testing , hooking up a scanner that can check DTC'S in the door module ,electrical circuit testing etc... we'd only be guessing . Your best bet mite be to take it to a qualified repair shop.