Loss of oil

Asked by Feb 11, 2017 at 01:40 PM about the 2004 GMC Sierra 1500 4 Dr Denali AWD Extended Cab SB

Question type: Maintenance & Repair

Vehicle eats oil.....no leaks visible. Consumes oil 3 quarts per 1500 miles. At
start up a big plume of blue smoke comes from the exhaust.Engine light
comes on and blinks most times and sometimes will stay solid then after a
couple of start ups the Engine light goes off.

2 Answers

251,475

Blue smoke out the exhaust means the valve seals and or rings are shot. How many miles on the engine? Since the CEL was on, you can scan for the code or codes, they will be stored in memory.

50,795

2004 that eats oil, bet it has a boatload of miles on it.

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