If your Chevy Colorado remote start is not working, the cause is often simple: a disabled setting, a weak key fob battery, or a vehicle condition that blocks the system.
This guide walks through the most common reasons, how the factory system works, and the quickest checks to narrow down the problem.
How the Chevy Colorado remote start system is designed to work
The factory remote start feature on the Chevrolet Colorado is controlled by the vehicle’s body and security systems, so it will only activate when specific conditions are met.
On many model years, the system uses the key fob’s remote start button sequence to start the engine, but it may refuse to engage if the truck detects a fault, an open hood, low fuel, or another blocking condition.
Because the remote start system is integrated with modules such as the Body Control Module and the anti-theft system, a problem in one area can prevent the feature from working even if the fob itself seems fine.
That is why diagnosis should begin with the simplest causes before moving to electrical or module-related issues.
Most common reasons Chevy Colorado remote start is not working
When a Colorado remote start fails, the problem usually falls into one of a few categories.
Start with the items below, since they account for most no-start complaints.
Weak or dead key fob battery
A weak key fob battery is one of the most common reasons the remote start signal does not reach the truck.
The lock and unlock buttons may still work at short range, but remote start often requires a stronger signal than basic door commands.
If your key fob battery is old, replace it with the correct coin-cell battery specified for your fob.
After replacement, test the feature again from a few car lengths away.
Vehicle battery is low
The Colorado may block remote start when the 12-volt battery is weak or nearing failure.
Even if the engine still cranks normally, a low battery can trigger protection logic that prevents remote start from engaging.
Signs of a weak battery include slow cranking, dim interior lights, warning messages on the dash, or repeated jump-starts.
If the truck has been sitting for a while, has extreme cold-weather exposure, or uses accessories that drain power, battery voltage should be checked with a multimeter or battery tester.
Hood is open or hood latch sensor is misreading
Remote start is disabled if the truck believes the hood is open.
On some trucks, a faulty hood latch switch or misaligned latch can create a false open-hood condition even when the hood is closed.
If the remote start button sequence causes no reaction, inspect the hood area and confirm the latch is fully engaged.
If the issue comes and goes, the hood sensor or latch assembly may need adjustment or replacement.
Check engine light or powertrain fault
Many GM vehicles disable remote start when the engine control system detects certain fault codes.
A check engine light does not automatically mean remote start will fail, but some diagnostic trouble codes do block the feature as a safety measure.
If the truck has a check engine light, retrieve the OBD-II codes using a scan tool.
Pay attention to codes related to emissions, engine temperature, charging system, or theft deterrent functions.
Remote start feature is turned off in settings
Some Colorado trims and model years allow remote start to be enabled or disabled in the vehicle settings menu.
If the feature was turned off accidentally, the fob will not start the engine even though everything else appears normal.
Check the infotainment system or driver information settings for remote start options.
If the truck was recently serviced, had a battery disconnect, or received software updates, settings may have changed and should be verified.
Transmission, brake, or gear selection issue
The Colorado must detect that it is safely parked before remote start will work.
If the transmission range sensor, brake switch, or related input is inaccurate, the system may block the command.
Make sure the truck is fully in Park, the parking brake is engaged where applicable, and no warning messages are present on the dashboard.
If the brake pedal switch is faulty, the vehicle may interpret the brake as being pressed and cancel remote start logic.
Quick checks to perform before visiting a mechanic
These basic checks often solve the problem without tools or expensive parts.
Work through them in order.
- Replace the key fob battery with a fresh, correct-fit battery.
- Test the remote start from close range and then from several feet away.
- Confirm the hood is fully closed and latched.
- Check for warning lights or messages on the instrument cluster.
- Verify the vehicle battery is charged and terminals are clean and tight.
- Make sure the truck is in Park and the brake pedal is not being pressed.
- Confirm remote start is enabled in vehicle settings.
- Try the backup key fob, if available.
If the truck responds with no lights, no horn chirp, and no crank attempt, the issue may be related to signal transmission, fob programming, or a disabled feature.
If it tries to start and immediately shuts off, the problem is more likely tied to a sensor, battery, or engine-side fault.
GM remote start systems often provide clues through lights, horn chirps, or a brief crank attempt.
These clues can help separate a fob problem from a vehicle problem.
- No response at all: The fob battery may be weak, the fob may not be paired, or the truck may not be receiving the signal.
- Lights flash but engine does not start: The vehicle sees the command but is rejecting it because of a condition such as an open hood or fault code.
- Engine starts and then shuts off: The truck may be detecting a security issue, a sensor failure, or a problem with engine operation.
- Horn chirp or message on the display: Some model years display a reason remote start was denied, which can point directly to the blocked condition.
Model-year and trim differences that can matter
Chevrolet Colorado remote start behavior can vary by year, trim, and package.
Some trims include remote start as standard equipment, while others require a specific package or dealer-installed accessory.
Aftermarket remote start systems also behave differently from GM factory systems and may have their own batteries, antennas, or bypass modules.
If your Colorado has an aftermarket remote start installed, the diagnosis changes slightly.
Aftermarket systems often fail because of a weak fob battery, wiring issues, firmware problems, or a failed bypass module tied to the immobilizer system.
When to suspect a programming or module issue
If you have replaced the fob battery, verified the truck battery, checked the hood latch, and confirmed there are no obvious fault lights, the next likely causes are programming or module-related.
A lost key fob pairing, a body control module issue, or a software problem after a battery replacement can all affect remote start operation.
In these cases, a scan tool with GM-level diagnostic capability may be needed to check live data, body control codes, and theft deterrent status.
A dealership or qualified automotive electrician can also determine whether the key fob needs reprogramming or whether a module update is required.
Why weather and battery health matter so much
Cold temperatures reduce battery output, and the Colorado may become more sensitive to voltage drop in winter.
If the truck sits outside in freezing weather, a battery that seems acceptable in summer can become too weak to support remote start.
Heat can also affect batteries, fob electronics, and sensor behavior over time.
That is why a truck that starts fine with the key may still refuse remote start when battery health is marginal.
When to get professional diagnostics
If the same problem keeps returning, professional testing is the fastest way to isolate the cause.
A technician can check battery load, scan for stored trouble codes, inspect the hood latch switch, test the brake input, and verify remote start authorization through the vehicle network.
Professional help is especially useful when the truck has intermittent failures, a persistent check engine light, or electrical symptoms such as parasitic battery drain, hard starts, or repeated warning messages.
Maintenance steps that help prevent remote start problems
Regular maintenance can reduce the chance of future remote start failures and keep the system reliable during daily use.
- Replace the key fob battery before it becomes weak.
- Test the vehicle battery annually, especially before winter.
- Keep hood latch components clean and properly aligned.
- Address check engine lights promptly.
- Check for software updates during scheduled service.
- Keep spare fob batteries on hand if you rely on remote start often.
For many owners, the fix for a Chevy Colorado remote start not working is as simple as a battery replacement or a settings check.
If those basics do not restore operation, the next step is to look for the vehicle condition that is blocking the start command.