Bravada 2WD L6-4.2L VIN S (2002)
Transmission Cooler: All Technical Service Bulletins
A/T, Exhaust - Rattling Noise From Under the Vehicle
Bulletin No.: 04-07-30-002
Date: January 20, 2004
TECHNICAL
Subject:
Rattle Type Noise Coming From Under the Vehicle (Reposition Transmission Oil Cooler Lines)
Models:
2004 Buick Rainier
2002-2004 Chevrolet TrailBlazer, TrailBlazer EXT
2002-2004 GMC Envoy, Envoy XL
2002-2004 Oldsmobile Bravada
with 4.2L Engine (VIN S - RPO LL8)
Condition
Some customers may comment on a rattle type noise coming from under the vehicle.
Cause
This condition may be caused by one of the transmission oil cooler lines contacting the exhaust catalytic converter.
Correction
Raise the vehicle and carefully reposition the transmission oil cooler line(s) to provide 10 mm (0.393 in) clearance between the exhaust catalytic
converter and the line. Replace the transmission oil cooler line if any damage is present.
Warranty Information
For vehicles repaired under warranty, use the table.
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