Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2008COLORADO 2WD L5-3.7LREPAIR AND DIAGNOSISSTARTING AND CHARGINGTECHNICAL SERVICE BULLETINS
2008 Chevrolet Colorado 2WD L5-3.7L
Starting and Charging: Technical Service Bulletins
2008 Chevrolet Colorado 2WD L5-3.7LSECTION Technical Service Bulletins
- Recalls
- Customer Interest
- Engine Controls - Vehicle Will Not Start, Dead Battery
- Electrical - No Crank Due To Dead Battery
- Electrical - Dead Battery/No Crank/No Start
- Body - Rattle Noise From Under Vehicle
- Electrical - No Start/No Crank/Battery Drain
- Audio System - Noise When Using OnStar(R)
- Electrical - Intermittent MIL/DTC P2138/Reduced Power
- Electrical - MIL ON/DTC's Set By Various Control Modules
- By Symptom
- Abnormal wear/deterioration
- Customer Interest
- Engine Controls - Vehicle Will Not Start, Dead Battery
- Electrical - No Crank Due To Dead Battery
- Electrical - Dead Battery/No Crank/No Start
- Body - Rattle Noise From Under Vehicle
- Electrical - No Start/No Crank/Battery Drain
- Audio System - Noise When Using OnStar(R)
- Electrical - Intermittent MIL/DTC P2138/Reduced Power
- Electrical - MIL ON/DTC's Set By Various Control Modules
- Low, Dead battery
- Noise
- Recalls
- Starting problems
- All Technical Service Bulletins
- Engine Controls - Vehicle Will Not Start, Dead Battery
- Electrical - No Crank Due To Dead Battery
- Charging System - Low Voltage Display/Battery Discharged
- Electrical - Aftermarket Fuse Warning
- Starting System - Starter Cranks After Key Released
- Electrical - GM-Approved Terminal Probe Test Kit
- Electrical - Battery Charging Tips/Recommendations
- Battery/Charging System - Electrical Diagnostics Info.
- Remote Starting System - System Inoperative Diagnostics
- Electrical - Dead Battery/No Crank/No Start
- Body - Rattle Noise From Under Vehicle
- Electrical - No Start/No Crank/Battery Drain
- Electrical - Reducing Intermittent Electrical Concerns
- Campaign - Radio Causes Vehicle Battery Drain
- Audio System - Noise When Using OnStar(R)
- Electrical - Intermittent MIL/DTC P2138/Reduced Power
- Electrical - MIL ON/DTC's Set By Various Control Modules
- Locks - Key Code Security Rules, Key Code Look Up
- Electrical - Aftermarket Interface Devices Causing Issues
- Electrical - Ground Repair Information
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.