Question about 2004 Chevrolet Monte Carlo

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Cold engine startup rattle

I have a 04 monte carlo with a 3400 v6 engine, 69 thousand miles. when the engine is cold the motor has a rattle for 1 min then goes away. car drives great no other problems, all techs tell me this is common for the gm 3400

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  • liteup_42 Jun 29, 2008

    Everyone keeps saying its piston slap, and that it wont hurt anything, and i even talked to GM about it



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If it is like a ticking sound then it is the fuel injectors, but if it is like a slight knock than goes away it is more than likely a cold start(which means the oil has all drained into the pan) which would cause a slight sound and then go away after a bit.

Posted on Nov 06, 2008

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The problem might be fuel injectors...

Posted on Jun 23, 2008


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Hi I have a 2001 Monte Carlo SS with 144,miles I was a mile away going over speed bumps the battery light came on car died I put it in N car sound like it was flooded put it in P same thing turned it

might be worth starting with a wiggle test if you don't have access to any diagnostics. engine running and as suggested, careful of moving parts just go round the engine bay giving the loom/wiring a wiggle to see if you can re-create the fault. Jon

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Code P1870 for a 1996 Chevrolet Monte Carlo Z34 3.4 litre

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Jul 06, 2012 | 1996 Chevrolet Monte Carlo

2 Answers

Tachometer, fuel gauge, temp gauge don't work.

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Sep 02, 2010 | 2005 Chevrolet Monte Carlo

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2006 Monte Carlo engine noise rattle pinging deisel sound

sounds like your lifters or valves are rattling!

Jan 24, 2010 | 2006 Chevrolet Monte Carlo

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Where do you fill power steering fluid in 2003 chevrolet monte carlo

The 3100 and 3400 Engine Models have the power steering reservoir located on top of the engine on the passenger side of the vehicle, located directly on top of the power steering pump. The 3800 engine has the power steering pump located on the rear of the engine. you will want to wait until the engine is cold, some of them are a tight squeeze and can cause burns when it's hot. You have to, with the engine OFF, reach back and around and take the cap off to pull out the Cap/Dipstick and check it. Filling it is the tricky part, I have some tubing attached to the end of a funnel I use to Fill them, I currently work at a GM Dealership. Sometimes the wiring runs right on top of the reservoir, and it can be a hassle to get the cap off.

Aug 13, 2009 | 2003 Chevrolet Monte Carlo

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this is normal roller rocker noise, it will not cause any concerns, (from a GM TSB)

Apr 26, 2009 | 2004 Chevrolet Monte Carlo

1 Answer

Power stering pump

Is this the 3.4L DOHC engine or the 3100/3400 engine?

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04 Monte Carlo 3.4L won't pass emissions changed gas cap still no luck. Diagnostics that fail are 1.) catalyst 2.) evaporative system 3.)o2 sensor Thanks, Joe

If the code you have is p0420, then it sounds like you mayu have a bad catalytic converter. This will inturn cause the oqygen sensor codes, It may still be under warranty. The warranty is up to 125k miles.

Jun 24, 2008 | 2004 Chevrolet Monte Carlo

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