Underhood fuse block, what is wpr2 - 2006 Chevrolet Uplander

Your best bet , have a qualified repair shop check it out . Check for DTC'S - diagnostic trouble codes in the BCM - body control module . Wiper/Washer System Components
The Wiper/Washer System consists of the following components:
• Windshield wiper/washer switch
• Body control module (BCM)
• WPR1 relay
• WPR2 relay
• Windshield wiper motor
• Windshield washer pump

Wiper/Washer System Description The body control module (BCM) controls wiper motor low speed operation, washer pump and high speed operation. The windshield wiper/washer switch supplies a low or ground on the signal circuits to the BCM for windshield wiper/washer operation. When WASH, MIST, DELAY, LOW, or HIGH is detected, the BCM energizes the WPR1 relay by suppling low signal to the relay coil. This allows battery voltage from the FRT WPR fuse to flow through the relay switched input then through the contacts and out the relay switched output to the WPR2 relay switched contacts. Since the WPR2 relay switched contacts are normally closed to the low speed circuit of the windshield wiper motor, the motor will operate at low speed. For HI speed operation, the BCM supplies the same low signal to the WPR1 relay control circuit and also supplies a low signal to the WPR2 relay control circuit. The WPR2 relays normally opened contacts are now in series with the current supplying WPR1 relay contacts. The WPR2 relay normally open contact at this point supply current to the wiper motors HI input.

could have a relay stuck closed or a BCM problem ,check for code's .

Underhood Electrical Center or Junction Block Replacement

Removal Procedure

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.


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2. Disconnect the positive battery cables from the underhood fuse block terminals.
3. Remove the tape from the wiring harness at the base of the underhood fuse block base.


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4. Release the underhood fuse block(s) clip retainers using a small flat-bladed tool.


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5. Remove the fuse block(s) and wiring harness lifting up from the base and reposition from the base.


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6. Remove the nuts from the underhood fuse block base.
7. Remove the underhood fuse block base from the shock tower.


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8. Remove the underhood fuse block lower front terminal positive assurance retainers using a small flat-bladed tool.


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9. Remove the plastic shields from the battery cable and buss bar terminals, using a small flat-bladed tool to release the clip retainer.


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10. Remove the bolts from the buss bar jumper bar.


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11. Remove the buss bar jumper bar from the fuse block(s).


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12. Remove the fuses from the fuse block(s) to access the buss bar terminal release tabs.


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13. Remove the buss bar(s) from the fuse block(s) using a terminal releasing tool, and pulling down and out on the buss bar.


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14. Remove the buss bar(s) from the fuse block(s).


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15. Release the clip retainers from the underhood fuse block(s) battery cable and buss bar terminals using a small flat-bladed tool.


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16. Remove the underhood fuse block(s) battery cable and buss bar terminals from the fuse block by pulling down.
17. Remove the fuse block and lamp wiring harness from the vehicle, if required.

I copied the info from my database, sorry, it is read only, The way I copied it, read only, no pictures.

Fuse # 14 - 25 amp. location - under hood fuse box . Plus there are two relays - WPR 1 relay # 39 WPR2 relay #40 . location - under hood fuse / relay box .
Fuse for the wiper switch 10amp fuse - located in the BCM - body control module .

Fuse Block - I/P-instrument panel
Under the right side of the I/P, near the rear of the I/P compartment
Fuse Block - Rear
In the right rear of the passenger compartment, under the rear seat cushion
Fuse Block- Underhood- Left
In the right front of the engine compartment, near the battery
Fuse Block - Underhood - Right
In the right front of the engine compartment, near the underhood fuse block
Fuse Holder - Steering Column
On the left side of the passenger compartment, at the base of the steering column

Connector 1:
Fuse Block - Underhood Label (2.2L, 2.4L)
Connector 2:
Fuse Block - Underhood Top View (2.2L, 2.4L)
Connector 3:
Fuse Block - Underhood Bottom View (2.2L, 2.4L)
Connector 4:
Fuse Block - Underhood C1 (2.2L, 2.4L)
Connector 5:
Fuse Block - Underhood C2 (2.2L, 2.4L)
Connector 6:
Fuse Block - Underhood C3 (2.2L, 2.4L)
Connector 7:
Fuse Block - Underhood Label (2.0L)
Connector 8:
Fuse Block - Underhood Top View (2.0L)
Connector 9:
Fuse Block - Underhood Bottom View (2.0L)
Connector 10:
Fuse Block - Underhood C1 (2.0L)
Connector 11:
Fuse Block - Underhood C2 (2.0L)
Connector 12:
Fuse Block - Underhood C3 (2.0L)
Connector 13:
Body Control Module (BCM) Label
Connector 14:
Body Control Module (BCM) Top View
Connector 15:
Body Control Module (BCM) Bottom View
Connector 16:
Body Control Module (BCM) C1
Connector 17:
Body Control Module (BCM) C2
Connector 18:
Body Control Module (BCM) C3
Connector 19:
Body Control Module (BCM) C4
Connector 20:
Body Control Module (BCM) C5 (UE1)
Fuse Block - Underhood Label (2.2L, 2.4L)
2.2L

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2.4L

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Fuse Block - Underhood Label Usage (2.2L, 2.4L)
No.

Device

Rating

Description
1

ECM (2.4L)/TCM Fuse
10A

ECM (2.4L)/TCM
2-3

--
--

Not Used
4

RH HDLP Fuse
15A

Headlamp - Right
5

A/C Fuse
10A

A/C CLUTCH Relay
6-7

--
--

Not Used
8

ABS Fuse
10A

EBCM (JM4)
9

ECM/ETC Fuse
15A

ECM
10

EMISS Fuse
15A

EVAP Canister Purge Solenoid, Coolant Level Switch, MAF Sensor, HO2S 1, and HO2S 2
11
IGN Fuse
10A
ICM and PNP Switch (A/T)
12
--
--
Not Used
13
TRANS2 Fuse
10A
ECM, Automatic Transmission
14
TRANS1 Fuse
10A
TCM (MN5)
15
BACK UP Fuse
10A
PNP Switch (A/T) or Backup Lamp Switch (M/T)
16
INJECTORS Fuse
10A
Fuel Injectors 1-4
17
FOG LP Fuse
10A
FOG LAMP Relay (T37)
FOG LP Fuse
15A
FOG LAMP Relay (T96)
18
LH HDLP Fuse
15A
Headlamp - Left
19
WIPER Fuse
25A
WIPER 1 Relay
20
HORN Fuse
10A
HORN Relay
21
RADIO Fuse
20A
Audio Amplifier (UZ6)
22
ABS Fuse
20A
EBCM (JM4)
23
RR DEFOG Fuse
30A
REAR DEFOG Relay
24
A/C CLUTCH Relay
--
A/C Compressor Clutch

There are two, The "Underhood Fuse/Relay Box" and the "Instrument Panel Fuse Block".

The Underhood Fuse/Relay Box is located in the engine compartment near the battery.
TheInstrument Panel Fuse Block is located below and to the left of the steering wheel by the brake pedal.

There are two fuse boxes

1. Passenger compartment

The Passenger compartment fuse block access door

is on the driver's side edge

of the instrument panel. Pull

off the cover to access the

fuse block.

You can remove fuses with

a fuse extractor. The fuse

extractor is mounted to the
fuse block access door
2.Underhood Fuse and Relay center

The underhood fusehelay center is located in the rear of

the engine compartment near the brake fluid reservoir.

Move the retainer clips for the cover to access the

fuse block.

You can remove fuses with a fuse extractor. The fuse

extractor is mounted to the interior fuse block. To

remove fuses if you don't have a fuseex tractor, hold the

end of the fuse between your thumb and index finger
and pull straight out.

I read over the recalls and they do have recalls on brake and turn signal lights but not the low beam headlights while driving at night.

Sounds like the relay or headlamp driver module relay 46, for the headlights is going bad, though.
Or, it could alternatively be bad grounding of wire somewhere or bad wiring in general.

I would check in the underhood fuse box for the relay and see if wiggling it to ensure a good connection helps matters.


Underhood Fuse Block 4.2L Engine Except Saab Underhood Fuse Block (2002 - 2005 Early Production)

Underhood Fuse Block (2005 Late Production - 2007)

Saab Underhood Fuse Block (2005)

Underhood Fuse Block (2005 - 2007)

5.3L Engine Except Saab Underhood Fuse Block (2003 - 2005 Early Production)

Saab Underhood Fuse Block (2005)

Underhood Fuse Block (2006 - 2007)

5.3L & 6.0L Engines Except Saab Underhood Fuse Block (2005 Late Production - 2007)

No, the fuel pump relay does not reset when the power is removed, unless there is something wrong.

Try to locate the fuel pump relay with the following fuse box diagrams and wiggle it to make sure it is seated well.

Circuit Protection Fuses Underhood Fuse Block (Base)





Underhood Fuse Block (Except Base)







I/P Fuse Block

What engine size? Underhood Fuse Block 4.2L Engine Except Saab Underhood Fuse Block (2002 - 2005 Early Production)

Underhood Fuse Block (2005 Late Production - 2007)

Saab Underhood Fuse Block (2005)

Underhood Fuse Block (2005 - 2007)

5.3L Engine Except Saab Underhood Fuse Block (2003 - 2005 Early Production)

Saab Underhood Fuse Block (2005)

Underhood Fuse Block (2006 - 2007)

5.3L & 6.0L Engines Except Saab Underhood Fuse Block (2005 Late Production - 2007)