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# 3413.

Affected Component: ENGINE AND ENGINE COOLING:COOLING SYSTEM

Summary

COOLANT LEAK. EARLY INDICATIONS POINT TO A CORROSION STRESS CRACK ON THE UPPER CLAMP AT THE LOWER RADIATOR HOSE TO THE WATER PUMP CONNECTION. ENGINEERNG IS TESTING....*TT

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