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| GM N Platform | |
|---|---|
 | |
| Overview | |
| Manufacturer | General Motors |
| Also called | P-90 GMX130 |
| Production | 1984–2005 |
| Body and chassis | |
| Class | Compactplatform Mid-sizeplatform |
| Layout | FF layout |
| Body styles | 4-doorSedan 2-doorCoupé |
| Vehicles | Buick Skylark,Buick Somerset,Chevrolet Malibu/Classic,Oldsmobile Achieva,Oldsmobile Alero,Oldsmobile Calais/Cutlass Calais,Oldsmobile Cutlass,Pontiac Grand Am |
| Related | GM J platform GM L platform |
| Powertrain | |
| Engines | 122I4 Ecotec I4 Iron Duke I4 Family II engine I4 Quad-4 I4 60°V6 Buick V6 |
| Transmissions | 3-speedTHM125 automatic 3-speed3T40 automatic 4-speed4T60-E automatic 4-speed4T40-E automatic 4-speed4T45-E automatic 5-speedGetrag 282 manual 5-speedGetrag F23 manual 5-speedIsuzu manual |
| Dimensions | |
| Wheelbase | 103.4 in (2,626 mm) 107 in (2,718 mm) |
| Chronology | |
| Predecessor | GM X platform GM L platform |
| Successor | GM Epsilon platform |
TheGeneral Motors N platform (commonly called theN-body orN car) was afront-wheel drivecompactautomotive platform produced from 1984 to 2005. The GM N platform was based on theGM J-Body and replaced theGM X platform.
The N body was introduced in late 1984 for the 1985 model year. Initially, offered as the Pontiac Grand Am, Oldsmobile Calais and Buick Somerset coupes, GM positioned them as premium models at an affordable price. Standard in all models was the 2.5 liter "Iron Duke" 4 cylinder engine developed by the Pontiac Motor Division. Optional was the Buick built 3.0 liter V6 with multi-port fuel injection. All models could have a 5 speed manual or 3 speed automatic. During the 1986 model year, four door models were added to all three brand entries. TheN platform was very similar to theGM L platform; however, the first generation N cars were engineered byOldsmobile while the L cars were engineered byChevrolet. The first generation used atwist-beam rear suspension andMacPherson struts in front, and featured a 103.4 in (2,626 mm) wheelbase.
TheN platform was used for the following vehicles:[1]
For the 1992 model year, General Motors heavily modified all of their N-Body offerings. The Oldsmobile Cutlass Calais was dropped in favor of the new Achieva, while the Buick Skylark and Pontiac Grand Am nameplates continued. In addition to new styling, this generation was longer and carried more distinctive sheet metal for each brand. The second generation N-Body continued until 1998 when it was replaced by the third and final generation.
In 1997 and 1998General Motors consolidated the 2nd generationN platform with theGM A platform (FWD) andGM L platform during the corporately engineeredP-90 project which became known asGMX130. Thisautomotive platform featured fullyindependent suspension and a wheelbase of 107 in (270 cm). This was the last vehicle with significant engineering involvement ofOldsmobile and also the last one produced at theLansing Car Assembly plant on April 29, 2004. Amid-size version spawned the 1997-2003Chevrolet Malibu &Oldsmobile Cutlass of 1997–99, including the 2004–05Chevrolet Classic.
TheGMX130 platform underpinned the following vehicles:
TheGMX130 was replaced by theEpsilon platform for 2006.
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