BCM Cover
, So higher engine temps, so they thought it did'nt need a blanket under the hood. 
04-13-2010, 12:15 PM
#23
Senior Member
Join Date: 07-15-2009
Location: Waterbury CT
Posts: 2,070
^ Agreed, with the turbo you're going to get higher engine temps under the hood. (BTW Batman, no hood insulation came on my SS! 
) I figure that's the easiest explanation; it's either that or in conjunction w/ clearance issues w/ the intercooler hotside pipe when the hood's shut?
Later
Allex
) I figure that's the easiest explanation; it's either that or in conjunction w/ clearance issues w/ the intercooler hotside pipe when the hood's shut?Later
Allex
The only reason I want it is for car shows. The polished cover will add a little BLING.
09-03-2022, 01:59 PM
#26
Premium Member
Join Date: 05-13-2018
Location: CA
Posts: 41
Hi. I was going to locate a replacement BCM cover just like the one circled in blue, in the photo.
The old cover has a couple of tabs broken off and it doesn't stay in place very well.
So now I'm wondering if my 2LT HHR doesn't really require one unless GM put it there
to shield the heat from the metal hood when the car is parked in the hot sun? - Probably not?
The old cover has a couple of tabs broken off and it doesn't stay in place very well.
So now I'm wondering if my 2LT HHR doesn't really require one unless GM put it there
to shield the heat from the metal hood when the car is parked in the hot sun? - Probably not?
09-03-2022, 02:22 PM
#27
Moderator
Join Date: 05-01-2014
Location: California
Posts: 7,837
I believe the cover is actually for the TCM. The vehicle pictured above does not have a cover because it has a manual transmission, therefore no TCM.
The member that posted the pic also thought that the ECM was attached to the battery, but it's actually the fuse block. Take information posted long ago in these old threads with a grain of salt, many people did not know what they were talking about at the time. Much has been learned since then.
The member that posted the pic also thought that the ECM was attached to the battery, but it's actually the fuse block. Take information posted long ago in these old threads with a grain of salt, many people did not know what they were talking about at the time. Much has been learned since then.
09-03-2022, 04:04 PM
#28
Moderator
Join Date: 01-23-2009
Location: Fredericksburg,VA
Posts: 24,795
It covers both the TCM and the ECM, keeps dust and water of sensitive electronics. Would you leave your smartphone or laptop out on the patio?
The BCM is in the cabin next to the passengers left leg, that cover keeps curious fingers and other things out.
The BCM is in the cabin next to the passengers left leg, that cover keeps curious fingers and other things out.
09-04-2022, 05:57 AM
#30
Senior Member
Join Date: 12-05-2014
Location: Northern Ohio
Posts: 2,397
, That saves another pound , And almost 1 / 100 of a sec. 0-60 
I’ve thought about adding it. I think it would make the car a bit quieter.