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…my guess would be that since there’s no manual, there’s really no need for a tach these days…I use a shift light and tach regularly in my Z28 because it’s a manual, but I don’t even pay much attention to the tach in the Nox…
 

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2018 Terrain Denali 2.0T FWD
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In modern, automatic transmission vehicles the tach is mostly just a "feel good" item. Those that design the instrument cluster still design for two circular areas, one for the speedometer and the other for what? The go-to "what" is a tachometer. They should just go to a "vintage" look and eliminate the tach.

Just my opinion. YMMV
 

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In modern, automatic transmission vehicles the tach is mostly just a "feel good" item. Those that design the instrument cluster still design for two circular areas, one for the speedometer and the other for what? The go-to "what" is a tachometer. They should just go to a "vintage" look and eliminate the tach.

Just my opinion. YMMV
…growing up, we had an ‘83 Escort wagon at one point that had a shift light on the dash and a clock where the tach was supposed to be…🤦‍♂️
 

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2018 Terrain Denali 2.0T FWD
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…growing up, we had an ‘83 Escort wagon at one point that had a shift light on the dash and a clock where the tach was supposed to be…🤦‍♂️
When I was looking around before buying my Terrain, the dealship where I where I ended up buying from is Cadillac-Buick-GMC. So of course I looked at the Buick Envision. I was joking with the wife that the extra cost of the Buick over the Terrain was for the analog clock on the dash, though it was not part of the instrument cluster. Sort of redundant, though, with the digital clock on the infotainment screen. Though it would have been my daily driver, it would have been a win-win for us since she still prefers an analog watch, where I'm all-in on digital - which may be the engineer in me.
 

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'16 Equinox LTZ AWD 3.6
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Auto trans and ECM programing limiting RPM. Hence too many revs and your ''on the chip''.
 

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Discussion Starter · #9 ·
In modern, automatic transmission vehicles the tach is mostly just a "feel good" item. Those that design the instrument cluster still design for two circular areas, one for the speedometer and the other for what? The go-to "what" is a tachometer. They should just go to a "vintage" look and eliminate the tach.

Just my opinion. YMMV
I like having a tach. Gives you at least one more point of info. My first car (rusted out 1984 Chevy chevette) had no tach, only a gigantic fuel gauge, and that thing was bargain basement from beginning to end.
 

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2022 Equinox RS AWD, 1.5T, Iron Gray Metallic, Build Date 12/10/21 Purchased 12/17/21
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I like having a tach. Gives you at least one more point of info. My first car (rusted out 1984 Chevy chevette) had no tach, only a gigantic fuel gauge, and that thing was bargain basement from beginning to end.
Hell, my first 2 cars were 57 Chevys and they both had tachs! Aftermarket of course LOL
 

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Top off the gas tank with some nitro-methane and take the puppy up to 20,000 RPM !
 

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One oddity I've noticed seems to be a lack of a redline on the tachometer.

View attachment 18994

Is this a new trend in cars?
I wondered about that myself. I have a 2018 'nox with the 2.0L engine. I've done some hard pulls in the past 0 to 80mph + and a few 40 to 80's. The engine computer seems to limit the revs to just short of 6k on mine. I guess its there to protect the engine from overzealous users :)
protect the engine from over revving which is a good thing.
 

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They try to avoid provide minimal diagnostic data to owners, because the average person will not know what to do with the info, and bring the car into the shop for every little thing during warranty.
 

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2012 terrain 2.4 ecotec flexer
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Common sense disappeared with the corded telephone. A oil pressure gauge is vital to a engine as blood pressure is to all of us. The warning light on the 10 to 17 terrain 2.4 is useless. It is more of a warning damage has already occurred and engine seizure is imminent.
 

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I like having a tach. Gives you at least one more point of info. My first car (rusted out 1984 Chevy chevette) had no tach, only a gigantic fuel gauge, and that thing was bargain basement from beginning to end.
My first car (a new 1986 Cavalier VL - I couldn't afford the Z24 I wanted) also lacked a tachometer. I also like having a tachometer (as well as the oil pressure and volt meter gauges that cars like my 1994 Sunbird had) because I think it can still be useful for troubleshooting some driveabliity issues.
 

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Not exactly a new thing, my 2015 Impala LTZ (with the 3.6L "LFX" V6) had no redline displayed on the tach. Probably was the same for the "new" 2014 model as well.

But other cars from the same time period (2016 Cruze, 2018 Spark, 2018? rental Nissan Maxima) all had a redline on the tach, as did my 2013 Impala LT (also with the 3.6L "LFX" V6).

Most modern engine controllers won't allow over-rev and they can't be forced to over-rev (like you can with a careless downshift in a manual, the computer-controlled automatic will just refuse the downshift.)
 

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And the ECM would not allow any over rev of the motor too.
I agree - automatic trannies save engines because they can never force the engine past redline. Once upon a time I had two 1994 cars, a Chevy Lumina and Pontiac Sunbird, both with the 3.1 V6. The Lumina had the 4-speed automatic, and the Sunbird had the 5-speed manual. The Lumina had no tach, but the Sunbird did (7000 RPM max with redline marked at 6200 RPM). The engine in the Lumina had only been opened to change valve cover gaskets when we gave it away with 300K miles after we bought a 2001 Malibu. The Sunbird's engine didn't fare nearly as well - one day, I made a money shift from fifth to second at 75 MPH. I was able to determine that the engine reached 8200 RPM because I could use the information I had from the marked range of my tach to extrapolate an actual engine speed from my pegged tach needle. Fun fact, the engine ran great above 3500 RPM, but had a very nasty idle with a strong smell of unburnt gas. The service advisor correctly identified my "missed shift" based on the way the engine was running, and, somehow, the 6 bent pushrods and 5 bent valves were replaced under warranty. The timing chain snapped (at about 5000 RPM) at about 140K miles, approximately 100K miles afterwards.
 

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One oddity I've noticed seems to be a lack of a redline on the tachometer.

View attachment 18994

Is this a new trend in cars?
Some of you may remember when tachs also had a part of it that was yellow. I remember reading an owner's manual that mentioned that prolonged operation in that range could cause engine damage (how many times can YOU use "that" in one sentence?).
 
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