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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1999ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISRESTRAINTS AND SAFETY SYSTEMSSERVICE PRECAUTIONS
1999 Chevrolet Astro Van 2WD V6-4.3L VIN W
Restraints and Safety Systems: Service Precautions
1999 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Service Precautions
Caution: In order to avoid deploying the air bag when troubleshooting the SIR system, use only the equipment specified and the Instructions given. Failure to use the specified equipment as instructed could cause air bag deployment, personal injury to you or someone else, or unnecessary SIR system repairs.
Caution: If any water enters the vehicle's interior up to the level of the carpet or higher and soaks the carpet, the Sensing and Diagnostic Module (SDM) and the SDM harness connector may need to be replaced. The SDM could be activated when powered, which could cause deployment of the air bag(s) and result in personal injury. Before attempting these procedures, the SIR system must be disabled. Refer to Disabling the SIR System. With the ignition OFF, inspect the SDM mounting area, including the carpet. If any significant soaking or evidence of significant soaking is detected, you must perform the following steps:
^ Remove all water.
^ Repair the water damage.
^ Replace the SDM harness connector.
^ Replace the SDM. Air Bag(s) Arming and Disarming
Failure to follow these procedures could result in possible air bag deployment, personal injury, or otherwise unneeded SIR system repairs.
Caution: If any water enters the vehicle's interior up to the level of the carpet or higher and soaks the carpet, the Sensing and Diagnostic Module (SDM) and the SDM harness connector may need to be replaced. The SDM could be activated when powered, which could cause deployment of the air bag(s) and result in personal injury. Before attempting these procedures, the SIR system must be disabled. Refer to Disabling the SIR System. With the ignition OFF, inspect the SDM mounting area, including the carpet. If any significant soaking or evidence of significant soaking is detected, you must perform the following steps:
^ Remove all water.
^ Repair the water damage.
^ Replace the SDM harness connector.
^ Replace the SDM. Air Bag(s) Arming and Disarming
Failure to follow these procedures could result in possible air bag deployment, personal injury, or otherwise unneeded SIR system repairs.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.