PIP5737

Bulletin No.: PIP5737
Published date: 06/13/2020
Preliminary Information
PIP5737 Diagnostic Tip: Inspect Engine Oil Dipstick Tube O-ring And Areas Above Lower
Oil Pan Sealing Surface For Potential Engine oil Leaks
Proactive
Models
Brand:
Model:
VIN:
Model Years:
from
to
Engine:
Transmissions:
Cadillac
CT4-V
2020
All
All
2.7 L3B
All
Chevrolet
Silverado 1500 (New Model)
2019
All
All
2.7 L3B
All
Chevrolet
Silverado 1500
2020
All
All
2.7 L3B
All
GMC
Sierra 1500 (New Model)
2019
All
All
2.7 L3B
All
GMC
Sierra 1500
2020
All
All
2.7 L3B
All
Involved Region or Country: North America
Condition:
Engine Oil Leaks
Cause:
Possible Dipstick Tube O-ring Leaking Engine Oil
Correction:
When diagnosing engine oil leaks on the above listed vehicles it's important to inspect the dipstick tube O-ring and areas
above the composite oil pan sealing surface for potential oil leaks before condemning the lower composite oil pan as root
cause of engine oil leak.
Picture below shows oil leak from dipstick tube O-ring (looking through inspection mirror)
Picture below shows oil leak from composite oil pan sealing surface ( shown with black light and tracer dye)
Note: The use of engine oil dye and trace powders are recommended to assist with isolating engine oil leak points. Be sure to
clean suspected leak areas thoroughly before using trace powders.
Version History
Version
Modi ed
1
6/11/2020 - Created
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