Here you go! You missed 1 screw!
Notice: Refer to Fastener Notice .
I know,,,I already looked at Aldata,,,,,My question is:
How do you access that upper screw ? I've just spend 30 minutes on my back laying inthe floor board area and i can't even touch it let alone get a wrench on it....I don't need the Alldata answer,,,i already have that.
So your saying it's possible to remove this from the underside ? (Have you actually done this before and proven it's physically possible?) Getting the two lower ones with a universal 1/4" drive and 7 MM was tough enough, I can barely get my finger on the upper one. However, if you say this is "possible" then I'll rig some kind of tool up to get at this bolt (but it's never going bacl in again).
That said, here's the 6 Million dollar question, which started all this - when I removed the dash board underside cover a five pin connector was laying there loose - it has "male" pins fairly wide, unlike the computer box. Could this be a power or souce connector for the amp, and somehow it cam off? You can't get at the back of the map where the connectors are at without removing the amp....you'd think they would have flipped it around the other way where the connectors face away from the firewall! Or is this connector used for something else, like testing?
All testing is done through the DLC. So I doubt that connector is for testing. Did you get that AMP out yet?
LOL,,,,,yes,,finally out, along with a badly torn up right thumb. The top bolt on the amp is just inaccessable, period.
I had to remove the black computer module, and it's bracket, and take a screw driver though the openings of the cast aluminum mounting bracket in order to pry - pop the amp free of the upper most bolt. Nothing broke, but the female mounting clip for the amp bolt, just pulled through the bracket.
As for the freely dangling five pin connector, I still have no clue. It's not part of the amp.
I have a new amp on order, and would be happy to shoot you some digital pictures if it will help, you, or the next guy who needs to deal with this. I now know why the dealer wants $800 to do this work!
I actually had to build a platform outside the drivers side door to allow me to lay flat for a long period of time (used a bunch of bundled boxes laying flat).
When I install the new amp, I will not connect that upper bolt. The other two will hold it just fine.
It's amazing how GMC can put in a 1 - 1/2" (fine thread?) long bolt(s) to hold a light weight plastic bracket, which holds the computer. 1/2" long would have been more than adequate. Same with the amp, which is held with speed screws that are just way too long for what they are needed to do, and take forever to ratchet out.
Nothing appeared wet or bad on the outside of the amp. All the plugs were in tight. I'm 99% sure the Amp is just "blown".