What is the purpose of relays in Chevrolet Trailblazer and Buick Rainier's electrical system?

Several electrical accessories in a vehicle, such as the fuel injection system, horns, starter, and fog lamps, use relays to transmit the electrical signal to the component. Relays have a control circuit and a power circuit, with the control circuit opening and closing the power circuit. If a relay is defective, the component will not function. Most are found in the engine compartment or fuse boxes. To test, remove and check it for continuity using an ohmmeter. The terminals of ISO relays are numbered to indicate their circuit connections and functions.

Genuine Buick Rainier Relay

Wire Relay

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

7 Relays found

View related parts
Buick Rainier RELAY ASM,ACSRY TIME DELAY CUTOFF *GRAY
Part Number: 13500114
$9.54 MSRP: $20.04
You Save: $10.50 (53%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaces: 12193606, 19115080, 15328866, 12135034, 15393412, 12088567, 12135170, 19116057
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Buick Rainier | 4 DOOR | 6 Cyl 4.2L, 8 Cyl 5.3L
View related parts
Buick Rainier Relay Asm,Multiuse *Gray
Part Number: 13503102
$7.86 MSRP: $16.22
You Save: $8.36 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaces: 12177236, 12193614, 12088592, 12088576, 12135175, 12193604, 15328864
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Buick Rainier | 4 DOOR | 6 Cyl 4.2L, 8 Cyl 5.3L
View related parts
Buick Rainier Relay,Headlamp
Part Number: 15016745
$35.74 MSRP: $67.44
You Save: $31.70 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: RELAY, Headlamp/Fog Lamp/Turn Signal; Relay
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Buick Rainier | 4 DOOR | 6 Cyl 4.2L, 8 Cyl 5.3L
View related parts
Buick Rainier Relay,Secondary Air Injection Pump
Part Number: 15319851
$35.51 MSRP: $67.00
You Save: $31.49 (47%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: RELAY, Emission Control System; Relay
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Buick Rainier | 4 DOOR | 6 Cyl 4.2L
View related parts
Buick Rainier Flasher,Hazard Lamp & Turn Signal Lamp
Part Number: 15231201
$44.30 MSRP: $83.58
You Save: $39.28 (47%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: FLASHER, Chassis/Body Marker/Hazard; Flasher
- Replaces: 12450284, 15101912
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Buick Rainier | 4 DOOR | 6 Cyl 4.2L, 8 Cyl 5.3L
View related parts
Buick Rainier RELAY ASM,WSW MOT *BLACK
Part Number: 13500126
$11.71 MSRP: $21.00
You Save: $9.29 (45%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: 92199311, 92181835, 12077866, 12135180, 15393413, 19115082, 15328867, 19116058
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Buick Rainier | 4 DOOR | 6 Cyl 4.2L, 8 Cyl 5.3L
View related parts
Buick Rainier Relay Asm,Dr Lock <Use 1C5L8570A>
Part Number: 19119238
$48.44 MSRP: $72.10
You Save: $23.66 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: RELAY, Door and End Gate Electrical; Actuator Relay, Lock Relay, Relay
- Replaces: 89027051, 12065122
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Buick Rainier | 4 DOOR | 6 Cyl 4.2L, 8 Cyl 5.3L

Buick Rainier Relay Parts Questions & Experts Answers

RELAY ASM,ACSRY TIME DELAY CUTOFF *GRAY
13500114
Q: What is the purpose of relays in Chevrolet Trailblazer and Buick Rainier's electrical system?
A: Several electrical accessories in a vehicle, such as the fuel injection system, Horns, starter, and fog lamps, use relays to transmit the electrical signal to the component. Relays have a control circuit and a power circuit, with the control circuit opening and closing the power circuit. If a relay is defective, the component will not function. Most are found in the engine compartment or fuse boxes. To test, remove and check it for continuity using an ohmmeter. The terminals of ISO relays are numbered to indicate their circuit connections and functions.