Shop lowest-priced OEM 2003 GMC Yukon 4WD Parts from genuine parts catalog at GMPartsGiant.com. In addition to the standard roofline with louvered rear side windows, Grand Am coupes with the optional vinyl roof could be ordered with a full triangular rear side window or a vertical opera window similar to that found on the Grand Prix. 1985-1991: Isuzu sourced 5-speed manual with Pontiac Grand Am. The Pontiac Grand Am is a mid-size car and later a compact car that was produced by Pontiac.The history of Grand Am starts with Pontiac executives noting incursion into the US market by Mercedes and BMW. Notably, the American sports car was usually without luxury features and the luxury car without sport features. Question about 1991 Isuzu Pickup. 1 Answer . I have a 91 Isuzu pick up manual transmission 5 speed that makes a high whining noise in 1st 2nd and 5th gear. What could this be? SOURCE: 1995 Isuzu Rodeo 4X4 3.2 5 speed manual, reverse lights on in 1st. The Pontiac Grand Am is a mid-size car and later a compact car that was produced by Pontiac.The Grand Am had two separate 3-year runs in the 1970s: from 1973 to 1975, and again from 1978 to 1980. It was based on the GM A platform.Production of the Grand Am was canceled in 1980 when it was replaced by the Pontiac 6000. Chrysler A568 transmission — 5-speed manual transaxle, Chrysler-built (NPG) with Getrag-sourced gearset NSG370 transmission — 6-speed overdrive manual transmission NVG A578 — 5-speed manual transaxle for the Dodge Neon and various GM subcompacts The Isuzu 5-speed Manual model is capable of power with the efficiency for every type of job requirement in the Isuzu 3.0 Ddi Blue Power with the Genius Sport Shift display feature which tells the The case was redesigned to fit GM V-6's and the Quad 4's. GM decided it was more economical to buy the Getrag design than start from scratch to design their own 5 speed transmission for the higher torque 2.8 and larger V-6's. All late 86's, 87 & 88 V