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8.7

pretty bad
Typical Repair Cost:
No data
Average Mileage:
15,067 miles
Total Complaints:
3 complaints

Most Common Solutions:

  1. not sure (2 reports)
  2. rebuild engine or GM should warranty to 150,000 miles (1 reports)
2002 GMC Sierra 2500 engine problems

engine problem

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2002 GMC Sierra 2500 Owner Comments

problem #3

Jul 012002

Sierra 2500 SL 8.1L V8

  • Automatic transmission
  • 1,000 miles

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

From the time the truck was new, it has never used less tha 1 qt. of oil per thousand miles. Now it uses about a qt. per 500 miles. It has 33000 miles on it. the truck does not smoke, and it does not leak oil. It also has the " cold start knock". I suspect the knock is really piston slap resulting from poor manufacturing tolerances born from poor engineering. I've been reading on the internet and heard about things like a tube that extends from the underside of the intake manifold that could be sucking oil. if anyone has an answer, I'd be happy to hear it.

- , Osceola, IN, USA

problem #2

Jul 232005

(reported on)

Sierra 2500 HD SLE

  • 41,000 miles

ive had to check and add oil since i bought the truck////the oil light came on a couple months ago and it did not register on the dip stick////it took 2 qts. to fill... now my spark plugs need to be replaced---they have 20000 miles on them and they are expensive denso plugs.... gm said they would warranty the engine to 100000 miles////i didnt know what to say to the rep... i need advice////8.1 vortec

- , Coos Bay, OR, USA

problem #1

Jun 032002

(reported on)

Sierra 2500 HD

  • 3,200 miles

AT 600 MILES THE 8.1L ENGINE STARTED TO CLATTER LOUDLY AT COLD STARTS AND AT 3,200 MILES THE ENGINE GAVE A LOW OIL WARNING. IT HAS BEEN CONSUMING A QT OF OIL EVERY 1,500 TO 1,600 MILES SINCE THEN.

- , St. Marys, GA, USA

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