Holding rear glass open while cruising

[MRogers]

Because of that reason alone, most SUV manufacuters don't allow anyone to lower their rear windows anmore and most have removed the ability to do so.

I guess thats why I'm the only Blazer around with sliding rear glass on the sides.

[BlazerLT]

Originally Posted by MRogers

I guess thats why I'm the only Blazer around with sliding rear glass on the sides.

I am sorry that I wasn't more specific, I meant RECENT SUVs.

A lot of them stopped allowing the rear window to go down because of this.

[00BLZRMyWay]

Originally Posted by BlazerLT

Real mature guys, I am trying to help someone avoid a potentially harmful situation and you laugh at me being in the hospital.

Thanks for your understanding.

Now you guys see what you've gone'n'done! Moderator's get hurt too!
I understand LT. Damn. You really can put a guilt-trip on though. I felt guilty myself!

[AlmostStock]

I agree the possibility of exhaust fumes entering the cabin is a serious problem that needs to be taken into consideration here. This is the reason why many owners manuals will tell you not to drive with the lift glass open.

Like some have touched upon, the location and size of a rear glass opening, how fast the vehicle is traveling and whether or not the front windows and/or vents are open, will all effect whether or not dangerous gasses are drawn in.

Some modern vans and wagons have side window vents all the way in the rear. Convertibles and Jeep Wranglers are completely open in the rear. The people driving these vehicles are not having exhaust gas problems. All modern vehicles (Blazers included) have dash air vents that are always open, even when turned to OFF. So creating a small additional opening on the rear of the Blazer while the front windows are open shouldn't expose passengers to unsafe conditions. I would never recommend cruising at highway speeds with the lift glass wide open. (especially with the front windows closed)

[BlazerLT]

Originally Posted by AlmostStock

I agree the possibility of exhaust fumes entering the cabin is a serious problem that needs to be taken into consideration here. This is the reason why many owners manuals will tell you not to drive with the lift glass open.

Like some have touched upon, the location and size of a rear glass opening, how fast the vehicle is traveling and whether or not the front windows and/or vents are open, will all effect whether or not dangerous gasses are drawn in.

Some modern vans and wagons have side window vents all the way in the rear. Convertibles and Jeep Wranglers are completely open in the rear. The people driving these vehicles are not having exhaust gas problems. All modern vehicles (Blazers included) have dash air vents that are always open, even when turned to OFF. So creating a small additional opening on the rear of the Blazer while the front windows are open shouldn't expose passengers to unsafe conditions. I would never recommend cruising at highway speeds with the lift glass wide open. (especially with the front windows closed)

This is true.

The thing is, the window does not have to be open for this to occur nor do you have to be at highway speeds.

The rear of our blazers already have rear one way exhaust valves in the rear window pillars already. You don't need to open the rear window.

The most harmful components of the exhaust are odourless and can really sneak up on you.

If you want good air circulation, I have great luck by opening the opposite window other than the one you are next to. For example, if you have the driver's window down a bit, open the rear passenger window and bit and you will feel the difference.

[00BLZRMyWay]

My Blazer won't even let you open the back window unless it is in Park. Not from the keys, from the dash switch, or the tailgate button. Convertibles and Jeep Wranglers are not of any concern. They haven't a cieling to trap the rising CO2.

[AlmostStock]

Originally Posted by 00BLZRMyWay

Convertibles and Jeep Wranglers are not of any concern. They haven't a cieling to trap the rising CO2.

Good point. Did I mention I have a sunroof?

[muzzy1maniac]

Originally Posted by BlazerLT

Real mature guys, I am trying to help someone avoid a potentially harmful situation and you laugh at me being in the hospital.

Thanks for your understanding.

I mean no disrespect BLT, just having a little fun.

Sometimes I can't help myself.

[AlmostStock]

Originally Posted by 00BLZRMyWay

Convertibles and Jeep Wranglers are not of any concern. They haven't a cieling to trap the rising CO2.

After giving this more thought I have concluded that it's not so much a "trapping" issue, (at least not while driving) as it is a situation where the fumes are drawn in and continuously flow through the vehicle, like when BlazerLT went on his vacation "trip". (sorry, I couldn't resist) It would probably be best to error on the side of safety and leave the rear gate closed.

[BlazerLT]

Originally Posted by AlmostStock

After giving this more thought I have concluded that it's not so much a "trapping" issue, (at least not while driving) as it is a situation where the fumes are drawn in and continuously flow through the vehicle, like when BlazerLT went on his vacation "trip". (sorry, I couldn't resist) It would probably be best to error on the side of safety and leave the rear gate closed.

That is extremely creative.

I wish it was a "trip", but the wooziness, vomiting and the headache is the worst thing I have ever went through.

Glad you made the smart choice for your health.

[BlazerBoyLT98]

I have heard that as long as your exhaust exits out the side behind the tires you should be ok and it is not that bad, it is when you do a custom exhaust that exits straight out the back. When I do my dual exhaust it will exit at an angle just behind both rear tires so if I wanted to ahve that glass open I could. But as always, it is better to be safe then sorry and I agree with BlazerLT, the most deadly gasses in your exhaust are odorless so please everyone be safe when cruising in the summertime. Good luck

[BlazerLT]

Originally Posted by BlazerBoyLT98

I have heard that as long as your exhaust exits out the side behind the tires you should be ok and it is not that bad, it is when you do a custom exhaust that exits straight out the back. When I do my dual exhaust it will exit at an angle just behind both rear tires so if I wanted to ahve that glass open I could. But as always, it is better to be safe then sorry and I agree with BlazerLT, the most deadly gasses in your exhaust are odorless so please everyone be safe when cruising in the summertime. Good luck

My dad thought that as well see the exhaust on our old K5 Blazer exited the side too.

The airflow going over the side, bottom and top of the truck actually all curve around the back of the truck.

He never ever made that mistake agin, we warned him so many times and he bawked it until I was in the hospital. I still will never forgive him for it.

[BlazerBoyLT98]

Dude let it go, he was not trying to kill you, he is just old school. Same with any older guy, they were right and you were wrong even if exactly what you said happened. But I hear yea. Some people are never wrong. Forgive, forget, move on. But I do see that the apple didn't fall far from the tree!