6.0

fairly significant
Typical Repair Cost:
$50
Average Mileage:
111,150 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. replace rubber connections (1 reports)
2003 GMC Sierra 2500 drivetrain problems

drivetrain problem

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2003 GMC Sierra 2500 Owner Comments

problem #1

Feb 112021

Sierra 2500 SLE 6.0L

  • Automatic transmission
  • 111,111 miles

A D V E R T I S E M E N T S

Cooling lines for engine oil cooler and transmission cooler leak at the rubber connections and will cause failure of engine and/or transmission. Engine oil cooler lines not needed so buy the blockoff plate and install it at oil filter and just cut old lines off... problem fixed for $10.

If you don't do this, you can lose all of the engine oil causing major engine replacement. The transmission lines just cut off the tube next to the rubber fittings and replace with high pressure rubber lines with clamps, no more leaks!!!

- Tttt D., abcd, DE, US

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