What is the purpose of relays in electrical system on Chevrolet Trailblazer?

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 Chevrolet Trailblazer Relay

Wire Relay

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9 Relays found

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Chevrolet Trailblazer RELAY ASM,ACSRY TIME DELAY CUTOFF *GRAY
Part Number: 13500114
$10.11 MSRP: $20.88
You Save: $10.77 (52%)
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Product Specifications
- Replaces: 12088567, 12135170, 19116057, 92199312, 12193606, 12135034, 19115080, 15328866, 15393412
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L
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Chevrolet Trailblazer Relay Asm,Multiuse *Gray
Part Number: 13503102
$7.77 MSRP: $16.90
You Save: $9.13 (55%)
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Product Specifications
- Replaces: 12193604, 15328864, 12088592, 12177236, 12088576, 12193614, 12135175
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L
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Chevrolet Trailblazer Relay Asm,Multiuse
Part Number: 19118886
$53.35 MSRP: $115.98
You Save: $62.63 (54%)
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Product Specifications
- Other Name: RELAY, Fuel Pump
- Replaces: 12177235, 12135086, 12135005, 12193613, 12177233, 84095360, 12193601, 12193603, 12193611, 12135085, 12077867, 12077864, 12088577, 19131161
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L
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Chevrolet Trailblazer Flasher,Hazard Lamp & Turn Signal Lamp
Part Number: 15231201
$46.41 MSRP: $87.56
You Save: $41.15 (47%)
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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:
- 2002-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L
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Chevrolet Trailblazer Relay,Headlamp
Part Number: 15016745
$37.12 MSRP: $72.36
You Save: $35.24 (49%)
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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:
- 2002-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L
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Chevrolet Trailblazer Relay,Secondary Air Injection Pump
Part Number: 15319851
$35.34 MSRP: $66.68
You Save: $31.34 (47%)
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Product Specifications
- Other Name: RELAY, Emission Control System; Relay
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2009 Chevrolet Trailblazer | 4 DOOR | 6 Cyl 4.2L
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Chevrolet Trailblazer RELAY ASM,WSW MOT *BLACK
Part Number: 13500126
$11.60 MSRP: $21.88
You Save: $10.28 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Replaces: 19116058, 92181835, 92199311, 12135180, 12077866, 15328867, 19115082, 15393413
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L
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Chevrolet Trailblazer Relay Asm,Dr Lock <Use 1C5L8570A>
Part Number: 19119238
$58.45 MSRP: $84.73
You Save: $26.28 (32%)
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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:
- 2004-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L
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Chevrolet Trailblazer Flasher,Hazard Lamp & Turn Signal Lamp
Part Number: 15231200
Product Specifications
- Other Name: FLASHER, Turn Signal Lamp
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2009 Chevrolet Trailblazer | 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L, 8 Cyl 5.3L, 8 Cyl 6.0L

Chevrolet Trailblazer Relay

The Chevrolet Trailblazer Relay is an electrically operated switch that allows a low power signal to command key climate components for easy and reliable cabin comfort. The Relay passes full current to devices such as the fan motor, blower motor, or A/C control circuit by opening or closing contacts as commanded. A faulty Relay can silence a fan instantly or freeze the heat cool selector. Early versions utilized a conventional mechanism that applied internal electromechanical components such as an electromagnet moving mechanical contacts, while later designs evolved to solid state designs that do the same thing using semiconductors and to latching types that stay in position after one pulse, saving power when voltage drops. Chevrolet has placed multiple Relays throughout the air system in all models irrespective of the style and positioned ambient, interior, and humidity sensors, which are the minimum but key links in the comfort chain. In many cases, replacing a worn Relay will get operation back faster and cheaper than replacing a major piece of hardware that has gone bad. As a result, when Trailblazer and other Chevrolet SUV owners see warning lights come on or feel temperatures are wrong, they check the Relay first. Doing this keeps the Trailblazer chill in summer and warm in winter.

Each OEM Chevrolet Trailblazer Relay we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Chevrolet Trailblazer Relay Parts Questions & Experts Answers

Relay Asm,Multiuse
19118886
Q: What is the purpose of relays in electrical system on Chevrolet Trailblazer?
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.

Related Chevrolet Trailblazer Parts

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