GM Service Manual Online
For 1990-2009 cars only

Caution: Always refer to the Diagnostic Trouble Code (DTC) listing information before diagnosing the SIR system. Failure to follow the listed information may result in an unintended Airbag deployment which could cause personal injury or vehicle damage.

Diagnostic Illustration 1


Object Number: 1280405  Size: SH

Checking the continuity between the passenger airbag and the sensing and diagnostic module (SDM).

Diagnostic Illustration 2


Object Number: 1280409  Size: SH

Checking for a short circuit between the passenger high and low circuits.

Diagnostic Illustration 3


Object Number: 1280411  Size: SH

Checking for a short circuit between the passenger high and driver low circuits.

Diagnostic Illustration 4


Object Number: 1280414  Size: SH

Checking for a short circuit between the passenger high circuit and ground.

Diagnostic Illustration 5


Object Number: 1280433  Size: SH

Checking for a short circuit between the passenger low circuit and ground.

Diagnostic Illustration 6


Object Number: 1280434  Size: SH

Checking for a short circuit between the passenger high circuit and voltage.

Diagnostic Illustration 7


Object Number: 1280435  Size: SH

Checking for a short circuit between the passenger low circuit and voltage.

Diagnostic Illustration 8


Object Number: 1280437  Size: SH

Placing a jumper on the SDM side of the yellow clock spring connector.

Diagnostic Illustration 9


Object Number: 1280439  Size: SH

Placing a jumper on the clock spring-to-airbag connector.

Diagnostic Illustration 10


Object Number: 1280441  Size: SH

Checking for a short circuit between the driver high and passenger low circuits.

Diagnostic Illustration 11


Object Number: 1280442  Size: SH

Checking for a short circuit between the driver high and driver low circuits.

Diagnostic Illustration 12


Object Number: 1280444  Size: SH

Checking for a short circuit between the driver high circuit and ground.

Diagnostic Illustration 13


Object Number: 1280445  Size: SH

Checking for a short circuit between the driver low circuit and ground.

Diagnostic Illustration 14


Object Number: 1280446  Size: SH

Checking for a short circuit between the driver high circuit and voltage.

Diagnostic Illustration 15


Object Number: 1280448  Size: SH

Checking for a short circuit between the driver low circuit and voltage.

Diagnostic Illustration 16


Object Number: 1280450  Size: SH

Checking for an open circuit between the sensing and diagnostic module (SDM) and the clock spring.

Diagnostic Illustration 17


Object Number: 1280451  Size: SH

Checking for a short circuit between the right or left pretensioner high and low circuits.

Diagnostic Illustration 18


Object Number: 1280452  Size: SH

Checking for a continuity between the right side belt pretensioner and the sensing and diagnostic module (SDM).

Diagnostic Illustration 19


Object Number: 1280453  Size: SH

Checking for a short circuit between the wiring harness of right or left side belt pretensioner and ground.

Diagnostic Illustration 20


Object Number: 1280454  Size: SH

Checking for a short circuit between the belt pretensioner wiring harness and the voltage.

Diagnostic Illustration 21


Object Number: 1280455  Size: SH

Checking for the continuity between the left side belt pretensioner and the sensing and diagnostic module (SDM).