opfor2
Full Access Member
Is there any way to determine if my 2011 has the new improved valve cover per GM TSB# 10-06-01-008M without actually removing the cover?
Drivers side valve cover
- Thread starter opfor2
- Start date
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@Doubeleive may know.
You might be able to tell by the pcv hole location, maybe..... You would have to compare a photo of them side by side and not sure if you can tell from the topside or not
swathdiver
Full Access Member
When was the truck built? If memory serves, the new valve cover design was introduced in March 2011. Search the forum or GM TSBs to be sure.
The part number for the new one is 12642655 for 2009+. The earlier years use a different diameter PCV and consequently a different part number.
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opfor2
Full Access Member
If I go by the emissions sticker that is located on the driver's side door it has a date of November 2010, so I think I'm in need of a new valve cover.
donjetman
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The TSB link I provided you has part #s and pictures of the original & updated valve covers.
Here's a pic of mine. Round hole bad, square hole good.
Here's the TSB again: https://f01.justanswer.com/ebrock63...il+Consumption,+MIL+ON,+Engine+Runs+Rough.pdf
swathdiver
Full Access Member
Yep, right in Don's post of the TSB, it says February 1st, 2011 for the valve cover and October 2010 for the AFM shield in the oil pan.
I have the new cover but not the shield in my pan.
