TSB Document:

• Sorry, the NHTSA has not posted this TSB document yet.

You can still get the detailed info from GMC for this TSB. Call your local GMC dealer's service department & ask for a copy of TSB# 01542.

Affected Component: ENGINE AND ENGINE COOLING:ENGINE

Summary

VACUUM TYPE HISSING NOISE FROM ENGINE. THIS NOISE IS MORE NOTICEABLE WHEN THE VEHICLE IS PARKED IN AN ENCLOSED AREA WITH THE HOOD UP. 3.5 L52 ENGINE. SIT BULLETIN 1409740. *TT

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