Loosoing Coolant, Head Gasket Failure


fairly significant
Typical Repair Cost:
No data
Average Mileage:
67,000 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. not sure (1 reports)
2002 GMC Sierra 1500 engine problems

engine problem

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2002 GMC Sierra 1500 Owner Comments

problem #1

Feb 152007

(reported on)

Sierra 1500 SLE 5.3

  • Automatic transmission
  • 67,000 miles


I have a 2002 GMC with a vortec 5300 v8, The last two times I have got my oil changed the oil looked thick. And I have been losing a little coolant, in the last few weeks my coolant light is starting to come on often .

I change the oil just before it has 3,000 miles on it every time. Saturday I had the oil changed again and the guy said it looks like I have water in the oil. I have noticed that my oil pressure goes from 50 down to 35 in just a few days after an oil change. The truck will be 5 years old in June and it has 67000 miles on it. The question is do any of you know if my warranty is still good on a gas motor. A buddy told me he thinks that its still good for 5 years and 100000 miles.

I can't find that in my book. Could someone PLEASE let me know? Also do you think it might be a head gasket or maybe the aluminum heads? I have been told that's what kind of heads they came with. Thanks a lot for any information

- , Shreveport, LA, US

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