Can you safely put jackstands under the rear sway bar?

[rockola1971]

That is why I always use the term "computer", rather than ECM or PCM... Because, whichever one I think is the right term to use at the time I am posting I'll probably pick the wrong term. So you might notice I completely ignore using those terms and just stick with "computer"... Fewer complications for everyone, when I dumb it down for my own good! LOL

Please note: I am in no way suggesting anything about the mix-up on use of bell housing by the OP! Simple mix-up in typing. I was just poking fun at my own inability to correctly recall whether or Tahoes use an ECM or PCM, so I completely avoid the issue...

ECM in its true first use was used in 1981 up to when GM needed a computer to control the transmission (4L60E) too. A PCM controls both the tranny and engine. For some odd reason in 2007 GM decided to split them up again and 07 GM truck chassis have a ECM (engine) and TCM(transmission).

 

[MassHoe04]

ECM in its true first use was used in 1981 up to when GM needed a computer to control the transmission (4L60E) too. A PCM controls both the tranny and engine. For some odd reason in 2007 GM decided to split them up again and 07 GM truck chassis have a ECM (engine) and TCM(transmission).

Thanks for the clear breakdown on what is what for which models!

Hah!
It seems that I will never be able to keep it straight every time I want to mention it, because of some disconnect between my brain and my typing fingers.

Knowing when to surrender is the sign of a smart warrior. Since I have lost that battle, so I'll stick with calling it a "computer". At least, technically, I won't be wrong! LOL

 

[JamesLond]

I see the spot now.



On the driver side you have to put it between the opening in the parking brake cables. From first glance I thought the cables blocked everything.



On the passenger side it's nicer since there's no cables you have to move.

 

[Scottydoggs]

That is why I always use the term "computer", rather than ECM or PCM... Because, whichever one I think is the right term to use at the time I am posting I'll probably pick the wrong term. So you might notice I completely ignore using those terms and just stick with "computer"... Fewer complications for everyone, when I dumb it down for my own good! LOL

Please note: I am in no way suggesting anything about the mix-up on use of bell housing by the OP! Simple mix-up in typing. I was just poking fun at my own inability to correctly recall whether or Tahoes use an ECM or PCM, so I completely avoid the issue...

i hear ya. so heres how to figure that out, pcm is a power control module. it does the trans and engine. ecm, engine control module. does just the engine, then you also will have a tcm, trans control module. main issue with this info is knowing what cars/trucks use the pcm, or ecm. our years trucks have a pcm. if you can see the pcm or ecm its a dead give away. pcm's have two long plugs, and the module is large, ecm's are small and have two square plugs.

 

[rockola1971]

i hear ya. so heres how to figure that out, pcm is a power control module. it does the trans and engine. ecm, engine control module. does just the engine, then you also will have a tcm, trans control module. main issue with this info is knowing what cars/trucks use the pcm, or ecm. our years trucks have a pcm. if you can see the pcm or ecm its a dead give away. pcm's have two long plugs, and the module is large, ecm's are small and have two square plugs.

PCM= Powertrain Control Module

GM has been pulling a Ford/Dodge lately with how many different odd things they are doing with electronics. Hopefully we never end up with the wiring problems of Dodge!

 

[Rocket Man]

Thanks for the clear breakdown on what is what for which models!

Hah!
It seems that I will never be able to keep it straight every time I want to mention it, because of some disconnect between my brain and my typing fingers.

Knowing when to surrender is the sign of a smart warrior. Since I have lost that battle, so I'll stick with calling it a "computer". At least, technically, I won't be wrong! LOL

Just don’t jack up the computer and you’ll be fine.