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 MANUALSBUICK1999LESABRE V6-3.8L VIN KREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULETESTING AND INSPECTIONREADING AND CLEARING DIAGNOSTIC TROUBLE CODESHISTORY CODES
1999 Buick LeSabre V6-3.8L VIN K
History Codes
1999 Buick LeSabre V6-3.8L VIN KSECTION History Codes
Upon entering the diagnostic mode, the MALL module provides audible feedback in the form of bongs; the number of bongs represents the stored history code number. The FASTEN BELTS indicator flashes with each bong. In the following chart, the history code is listed with the corresponding short circuit condition:
The MALL module cycles through the stored history code(s) 3 times. For example, if a short condition occurs on the FASTEN BELTS indicator circuit and battery protection circuit, 1 bong sounds for the FASTEN BELTS indicator circuit, followed by 2 bongs for the battery protection circuit. A 2 second pause occurs before the history codes repeat. If no history codes exist, the MALL module immediately enters the input/output mode.
The history codes may be erased by holding down the power door unlock switch for 4 seconds.
Body Control Module Diagnostic Information:
The MALL module cycles through the stored history code(s) 3 times. For example, if a short condition occurs on the FASTEN BELTS indicator circuit and battery protection circuit, 1 bong sounds for the FASTEN BELTS indicator circuit, followed by 2 bongs for the battery protection circuit. A 2 second pause occurs before the history codes repeat. If no history codes exist, the MALL module immediately enters the input/output mode.
The history codes may be erased by holding down the power door unlock switch for 4 seconds.
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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.