Editing GM Ecotec engine (section)

===2.5===
====LCV====
First appearing in the 2013 [[Chevrolet Malibu]] and 2013 [[Cadillac ATS]], the 2.5 L ''Gen III'' block has been reworked to reduce engine noise and vibrations, while improving fuel economy and low-end torque.<ref name="2.0T_genIII_PR">{{Cite web|url=http://media.gm.com/media/us/en/gm/news.detail.html/content/Pages/news/us/en/2012/Sep/0920_malibu_turbo_eng.html|title = New 2.0L Turbo Engine Gives the 2013 Chevrolet Malibu Enhanced Performance and Refinement|date = 20 September 2012}}</ref><ref>{{Cite web|url=http://media.gm.com/media/us/en/gm/news.detail.html/content/Pages/news/us/en/2011/Sep/0919_ecotec_25_efficient|title = New Ecotec 2.5L Engine More Efficient, Refined and Powerful|date = 19 September 2011}}</ref><ref>{{Cite web|url=http://media.gm.com/media/us/en/chevrolet/news.detail.html/content/Pages/news/us/en/2011/Sep/0919_malibu_noise_vibration|title=All-New Ecotec 2.5L Powers Chevrolet Malibu's Quest for Quietness|date=19 September 2011}}</ref> LCV is scheduled to replace the direct-injected 2.4 L throughout North American GM products within a year.<ref>{{cite web |url=http://blog.caranddriver.com/gm-to-replace-2-4-liter-fours-with-2-5-liters-across-the-range/ |title=Car and Driver Blog » GM to Replace 2.4-liter Fours with 2.5-liters Across the Range |website=blog.caranddriver.com |url-status=dead |archive-url=https://web.archive.org/web/20120113054212/http://blog.caranddriver.com/gm-to-replace-2-4-liter-fours-with-2-5-liters-across-the-range |archive-date=2012-01-13}} </ref> Engine production started in April 2012 at GM's [[Tonawanda Engine]] plant.

The new combustion system developed with GM's proprietary computational fluid dynamics (CFD) analysis software features a higher compression ratio which helps improve fuel efficiency and has improved knock resistance. The engine features dual overhead camshafts with continuously variable valve timing and increased-authority cam phasing (increased phase rotation angle), a high-pressure returnless direct-injection fuel system with camshaft-driven fuel pump delivering {{cvt|750|psi|bar}} at idle and {{cvt|2250|psi|bar}} at full load, higher-flowing intake and exhaust ports in the cylinder head, electronic throttle control and pistons with jet-spray oil cooling. The engine redline is 7000&nbsp;rpm.

The balance shafts are relocated from the cylinder block to oil pan module. The two-piece steel-aluminium oil pan features in-pan integrated oil-pump assembly driven by the balance shaft with a shorter inverted-tooth chain. Other improvements include inverted-tooth chain driving the camshaft, forged steel crankshaft, cast aluminium bedplate with main bearing cap inserts made of iron, high-pressure fuel rail with rubber-isolated assembly, acoustically shielded plastic cover for the intake manifold, and structurally enhanced aluminium camshaft cover and front cover. These improvements helped reduce noise intensity by 40% compared to the 2.4&nbsp;L engine and change the noise signature into a higher frequency above 2,000&nbsp;Hz. The engine also uses a variable-displacement oil pump and an actively controlled thermostat. [[Gasoline direct injection|Direct injection]] reduces emissions by 25%, while [[continuous cam phasing]] eliminates the need for an EGR system. Maximum engine speed is listed at 7000&nbsp;rpm.

Displacement for the 2.5&nbsp;L engine is 2,457&nbsp;cc with an {{cvt|88.0|mm|in}} bore and {{cvt|100.8|mm|in}} stroke. Compression ratio is 11.3:1.

{| class="wikitable"
! scope="col" | Year(s)
! scope="col" | Model
! scope="col" | Power
! scope="col" | Torque
|-
| 2013&ndash;2016<ref>{{Cite web|url=http://www.motortrend.com/news/2017-cadillac-ats-drops-base-2-5-liter-i-4-engine-option/|title = 2017 Cadillac ATS Drops Base 2.5-Liter I-4 Engine Option|date = 29 June 2016}}</ref>
| [[Cadillac ATS]]
| {{cvt|150.69|kW|0|order=flip}} @ 6300&nbsp;rpm
| {{cvt|259|Nm|lbft|0|order=flip}} @ 4400&nbsp;rpm
|-
| 2013
| [[Chevrolet Malibu]]
| {{cvt|146.96|kW|0|order=flip}} @ 6300&nbsp;rpm
| {{cvt|259|Nm|lbft|0|order=flip}} @ 4400&nbsp;rpm
|-
| rowspan="2" | 2015&ndash;2022
| [[Chevrolet Colorado]]
| rowspan="2" | {{cvt|200|hp|kW|0}} @ 6300&nbsp;rpm
| rowspan="2" | {{cvt|191|lbft|Nm}} @ 4400&nbsp;rpm
|-
| [[GMC Canyon]]
|-
| 2016
| Chevrolet Malibu Limited
| {{cvt|196|hp|kW|0}} @ 6300&nbsp;rpm
| {{cvt|186|lbft|Nm|0}} @ 4400&nbsp;rpm
|-
| 2017&ndash;2020
| [[Buick Envision]]
| {{cvt|197|hp|kW|0}} @ 6300&nbsp;rpm
| {{cvt|192|lbft|Nm|0}} @ 4400&nbsp;rpm
|-
| 2017
| [[Buick GL8]]
| {{cvt|197|hp|kW|0}} @ 6300&nbsp;rpm
| {{cvt|186|lbft|Nm|0}} @ 4400&nbsp;rpm
|-
| 2017&ndash;2021<ref>{{Cite web|title=2022 GMC Acadia Ditches 2.5L Four-Cylinder Engine|url=https://gmauthority.com/blog/2021/05/2022-gmc-acadia-ditches-2-5l-four-cylinder-engine/|access-date=2021-05-14|website=GM Authority|date=3 May 2021}}</ref>
| [[GMC Acadia]]
| {{cvt|194|hp|kW|0}} @ 6300&nbsp;rpm
| {{cvt|190|lbft|Nm|0}} @ 4400&nbsp;rpm
|-
| 2019&ndash;2021<ref>{{Cite web|title=GM Considering Removing 2.5L Engine From Chevy Blazer|url=https://gmauthority.com/blog/2021/03/gm-considering-removing-2-5l-engine-from-chevy-blazer/|access-date=2021-05-14|website=GM Authority|date=27 March 2021}}</ref><ref>{{Cite web|title=2022 Chevy Blazer To Lose L And 1LT Trim Levels|url=https://gmauthority.com/blog/2021/05/2022-chevy-blazer-to-lose-l-and-1lt-trim-levels/|access-date=2021-05-14|website=GM Authority|date=12 May 2021}}</ref>
| [[Chevrolet Blazer]]
| {{cvt|193|hp|kW|0}} @ 6300&nbsp;rpm
| {{cvt|188|lbft|Nm|0}} @ 4400&nbsp;rpm
|}

====LKW====
Same as the LCV but features Intake Valve Lift Control (IVLC) system provides two-stage [[variable valve lift]] in addition to continuous variable timing. Continuously commanded by the [[engine control unit]], the valve rocker arm switches between high-lift and low-lift profiles on the camshaft, actuated by an oil control valve through a two-feed stationary [[hydraulic lash adjuster]], allowing for either 4.0 or 10.5&nbsp;mm lift.<ref>{{Cite web|url=http://media.gm.com/media/us/en/gm/news.detail.html/content/Pages/news/us/en/2012/Sep/0917_intakevalve.html|title = 2014 Impala Engine Gets a High-Tech Lift|date = 17 September 2012}}</ref> It also features a [[start-stop system]]. Maximum engine speed is listed at 7000&nbsp;rpm.

{| class="wikitable"
! scope="col" | Year(s)
! scope="col" | Model
! scope="col" | Power
! scope="col" | Torque
|-
| 2014&ndash;2019
| [[Chevrolet Impala]]
| {{cvt|196-197|hp|0}} @ 6300&nbsp;rpm
| {{cvt|186-191|lbft|Nm|0}} @ 4400&nbsp;rpm
|-
| 2014&ndash;2015
| [[Chevrolet Malibu]]
| {{cvt|196|hp|0}} @ 6300&nbsp;rpm
| {{cvt|186|lbft|Nm|0}} @ 4400&nbsp;rpm
|-
| 2018&ndash;
| [[Saleen S1]]
| {{cvt|450|hp|kW|0}}
| {{cvt|400|lbft|Nm|0}}
|-
|}