axmonkey

2010 LNF 34K miles, stage 1 installed in 2010

I'm getting intermittent lost of power while driving(feels like a loss of a cylinder). Sometimes it wont start, or will start but idle hunts between 500 and 1000 RPM then will stall. Most of the time it starts and runs OK. I'd say power loss happens about 3-5 times a week. Sometimes I'll get a check engine lite. This has been going on/getting worse for about 3 months.

Codes Dealer pulled were: P0106, P0101. P0300. P0301. P0302. P0303. P0304

They state "the concern is a characteristic of stage 1 kit, there is no correction at this time" bullshit of course.

I'm calling Customer Care tomorrow, but I thought you guys might have some ideas.

Mr Mall Cop

iTrader: (1)

Try a different dealership

cobaltss#01

iTrader: (4)

aren't the factory warranties 3 years or 36,000 miles. whichever comes first?

axmonkey

Powertrain 5yr 100K

cobaltss#01

iTrader: (4)

that's maf sensors I believe.

Mr Mall Cop

iTrader: (1)

That's the bumper to bumper the warranty on the power train is 5 years and 100,000 miles

cobaltss#01

iTrader: (4)

0101 is maf and 0106 is the map sensors.

06_cobalt

In case you don't know what the codes are.

P0106
Manifold Absolute Pressure (MAP) Sensor Performance

P0101
Mass Air Flow (MAF) Sensor Performance

P0300
Engine Misfire Detected

P0301
Cylinder 1 Misfire Detected

P0302
Cylinder 2 Misfire Detected

P0303
Cylinder 3 Misfire Detected

P0304
Cylinder 4 Misfire Detected

ECaulk

iTrader: (6)

So what i'm getting out of this is, plugs and boost leak

06_cobalt

My guess is probably carbon deposits causing the misfire. DI engines are notorious for that.

LNFTX

Calling customer service was a good idea they should help otherwise seek out a better dealer
People on here have been to all kinds of shitty dealerships for some reason I found a good one they are out there tje one I dwal with has went above and beyond multiple times for me. Once the replaced a side skirt under bumper to bumper warranty even though it was most likey my friend that damaged it, another time they replaced my ignition even though their tsb doestbinclude 2010 models.

Moral of the story find a better dealer they dont all suck but if that dealership thinks its normal for gms1 to throw all those codes i wouldn't let them near my car anyway.

On a side note who installed gms1? If gm did it they more than likely used some shitty quick splices which are known to fail causing all sorts of codes

Terminator2

Needs the map connections checked and if need be soldered and heat shrunk. Most likely needs new map sensors due to the 106. The 101 code is due to a boost leak and you have misfires on all 4 cylinders which could be related to the other issues. Fix it yourself it is not worth the hassle of dealing with dealer techs. The 3 bar maps are dirt cheap as is a DIY boost leak tester. Swap the spark plugs out too while you are at it but use only the OEM plugs all others cause misfires.

user 72239

iTrader: (4)

Qfe

tomj77

iTrader: (2)

id think its time to check those valves for gunk

Terminator2

Maps and boost leak. Possible issue with the plugs although the P0106 could cause misfires on all 4 cylinders.

axmonkey

Stage 1 was installed by the same dealer. I bought the adapters, so they didn't have to splice them in. Of course one was bad so they decided to splice it in without calling me. They did solder the connections and shrink tubing them, the work looked OK to me.

axmonkey

If i get a bore scope and check, and the valves ARE gunked can i get the dealership to fix that? I've read up on how to do it yourself, but why spend the $$$ and time if i can get them to do it under warranty.

ECaulk

iTrader: (6)

True, although I'm going to assume they're the stock plugs, changing them wouldnt hurt.

user 72239

iTrader: (4)

I know all those codes too well.

99% of the time, plugs or boost leak.

And no OP, the valve gunk will not be warrantiable.

06_cobalt

Should, there's a bulletin out for it.

ECaulk

iTrader: (6)

They'll pour a seafoam like product in the fuel and call it fixed. They don't do what BMW does with walnut blasting

06_cobalt

I'm well aware, I've done it at my dealership on several vehicles. On the ones I've done, it has fixed the misfire problems.

ECaulk

iTrader: (6)

Doesnt fix valve coking on a direct injection engine

Chevrolet Cust Svc

Hey there,

If you need any assistance with this, please feel free to send a private message to us! We are Customer Care as well, and we can certainly look into this further for you.

Patsy G
Chevrolet Customer Care

kenhebe

For what it is worth the 5 year 100k drivetrain warranty only applies to hard parts like pistons, connecting rods, block, transmission, differential, etc... it does not cover for electrical units, sensors or accessory items. Unless one of those items are damaged and causing the issue they are correct to deny it under warranty.