2003 Cadillac CTS oil cooler

2003 CADILLAC CTS
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CJSTEELE
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2003 Cadillac CTS 6 cyl Two Wheel Drive Automatic

How do you replace an oil cooler on the 03 cts? Is there a way to make sure that it's bad and not the head gasket?
Sep 10, 2010 at 8:50 AM
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FACTORYJACK
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What is your symptom, oil in the cooling system?
Sep 13, 2010 at 5:33 PM
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CJSTEELE
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Yes.
Sep 13, 2010 at 9:24 PM
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FACTORYJACK
  • ✓Experienced Mechanic
  • 4,159 POSTS
The oil cooler is in the valley, under the upper and lower intakes. About the only way I would know of testing, is to block one side, and apply compressed air to the other with it submerged in water, and check for bubbles.
Sep 14, 2010 at 4:34 PM
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