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.
2001 Pontiac Aztek Base, AWDFACTORY OEM SERVICE PROCEDURE
Body Control Modules
- Description
- Operation
- Component Locations
- Programming
- Trouble Shooting
- INTERMITTENTS
- Self-Diagnostic System
- Notes
- Air Bag System Diagnostic System Check
- Anti-Lock Brake System Diagnostic System Check
- Audible Warnings Diagnostic System Check
- Automatic Transmission Powertrain On Board Diagnostic System Check
- Body Rear End Diagnostic System Check
- Cellular Communication Diagnostic System Check
- Cruise Control Diagnostic System Check
- Door Systems Diagnostic System Check
- Engine CONTROLSDIAGNOSTIC System Check
- Engine Cooling Diagnostic System Check
- Engine Electrical Diagnostic System Check
- Head Up Display Diagnostic System Check
- Horns System Diagnostic System Check
- Instrument Cluster Diagnostic System Check
- Lighting Systems Diagnostic System Check
- Manual Heating Ventilation Air Conditioning Systems Diagnostic System Check
- Power Seat/Heated Seats Systems Diagnostic System Check
- Power Sunroof Diagnostic System Check
- Radio/Audio System Diagnostic System Check
- Rear Axle Controls Diagnostic System Check
- Rear Window Defogger Diagnostic System Check
- Remote Keyless Entry Diagnostic System Check
- Retained Accessory Power Diagnostic System Check
- Theft Deterrent Diagnostic System Check
- Clearing Codes
- Diagnostic Trouble Code Definitions
- Diagnostic Tests
- DTC B0008: In Park Switch Circuit High
- DTC B1000: ECU Malfunction
- DTC B1004: Loss of Keep Alive Memory
- DTC B1007: EEPROM Write Error
- DTC B1009: EEPROM Checksum Error
- DTC B1440: Power Mode Master Input Circuits Mismatch
- DTC B1477: Retained Accessory Power Circuit Low
- DTC B1478: Retained Accessory Power Circuit High
- DTC U1000 & U1255: Class 2 Communication Malfunction
- DTC U1001-U1254: Lost Communication With XXX
- DTC U1300: Class 2 Data Link Low
- DTC U1301: Class 2 Data Link High
- DTC U1305: Class 2 Data Link Shorted
- DTC U1500: Inter-Device Dedicated Bus Malfunction
- System Tests
- Removal & Installation
- Notes
- Body Control Module
- Center Console Electrical Center Replacement
- Electronic Brake Control Module
- Front Floor Center Console Replacement
- Head Up Display Module
- Inflatable Restraint Sensing And Diagnostic Module
- Instrument Panel Cluster
- Powertrain Control Module
- Radio
- Theft Deterrent Control Module
- UNDERHOOD Electrical Center
- Vehicle Communications Unit
- Vehicle Interface Unit
- Wiring Diagrams
Factory Service Tools
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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.