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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 980 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B0053: Deployment Commanded with Loop Malfunctions Present >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

When DTC B0053 is accompanied by additional DTCs, other than B0051, repair the malfunction causing the other DTCs before replacing the SDM.

DTC B0053

Step Action Yes No
1 Did you perform the Diagnostic System Check - SIR? Go to Step 2  Go to Diagnostic System Check - SIR 
2
  1. Turn OFF the ignition.
  2. Inspect the vehicle for signs of air bag deployment.
Does the vehicle exhibit any signs of air bag deployment?		 Go to Step 5  Go to Step 3 
3 Inspect the vehicle and undercarriage for signs of impact or collision.
Does the vehicle exhibit any signs of impact or collision?		 Go to Step 5  Go to Step 4 
4 Replace the SDM. Refer to Inflatable Restraint Sensing and Diagnostic Module Replacement .
Did you complete the replacement?		 Go to Step 6  -
5 Replace all components and perform inspections as required following a collision. Refer to Repairs and Inspections Required After a Collision .
Did you complete the appropriate inspections and necessary repairs?		 Go to Step 6  -
6
  1. Reconnect all SIR system components.
  2. Verify that all components, connectors, and CPAs are properly mounted.
Did you complete the repair?		 Go to Diagnostic System Check - SIR  -
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