Vehicles with certain V6 engines may illuminate the Check Engine Light one or more of the following codes: P0011, P0014, P0021, P0024, P0341, P0346, P0336, or P0391. Our technicians tell us that some vehicles may require a powertrain control module (PCM) software update to correct this issue. Other vehicles may have excess camshaft end play on one or both cylinder heads which will need to be corrected using special procedures outlined by GM.
The Check Engine Light With Code: P0011, P0014, P0021, P0024, P0341, P0346, P0336, and/or P0391 on Saturn Outlook
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Excessive timing chain wear. The chains were replaced by the dealer under GM recall.
I was getting irregular shifting at 45,000 mi. I took it in, and had it serviced, it didn't do it (the shifting) as much. after 55-60,000mi it started slowly happening again. I was told that they reprogrammed the computer to adjust down the shifting. Now the shifting is going on every time I hit the gas. It is showing P0346 and P0336, I was told that it "COULD BE" many things: mass air flow, coil pack, ect. Why do they have a Electronic Computer that cannot tell us the "CORRECT" problem? Technology has come far enough that it should work right or don't push this code system on the consumer when their paying thousands of dollars on a truck that won't pass inspection if there's a code issue. Some of these code shouldn't stop you from getting these issues corrected. Also why are these cars that cost so much having these type of problems (ALOT)?More than ever before ? Don't we deserve better? Is this what "Made In America" is coming to? I'm still working (SPENDING MONEY)trying to fix this issue.
Taking car to dealer tommorrow.