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really awful
Typical Repair Cost:
No data
Average Mileage:
109,500 miles
Total Complaints:
2 complaints

Most Common Solutions:

  1. not sure (2 reports)
1999 Chevrolet Monte Carlo engine problems

engine problem

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1999 Chevrolet Monte Carlo Owner Comments

problem #2

Apr 012015

Monte Carlo LX 3.1L

  • Automatic transmission
  • 147,000 miles


Took it in to fix coolant leak in intake. Mechanic said don't waste your money, engine has a knock & not worth fixing.

- , Coeur D Alene, ID, USA

problem #1

Jan 312007

(reported on)

Monte Carlo LS 3.1

  • Automatic transmission
  • 72,000 miles

Engine tics at first start up and until its warm then it is quiet. The intake was removed and the Lifters checked, Push rods replaced and engine was reassembled. No change, still ticking. 70000 miles and engine problems. Although I have not seen it on this site. Others have said that this is a common problem. I have read that GM has a law suit against it for what they call Piston Slap. Its when they stick a piston that is too small into a cylinder. It will rattle around until it heats up and expands. This problem can be found in many different engines through the 90s and into the 00s. And of course the 3.1L that I have in this Monte is one of the worst. I am not sure this is my problem but its not right. You can do a search on GM piston slap and find all kinds of info.

- , Hazel Park, MI, USA

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