SLX is a step up form the SLE
where is the factory amp in a 1998 gmc Yukon
standard luxury equiptment
SLE stands for Special-Luxury-Edition its the mid range option package for gm vehicals
There is two on that vehicle. Both are located in the exhaust system between the engine and the muffler.
17 inch
285 HP/5300.
The primary difference is cloth interior vs leather. There are other differences, mostly in options available. SLT will also have things like heated seats and mirrors. The mirrors will have turn signal indicators. They may have self leveling, etc.
SLE is the lower end trim package, cloth interior etc. SLT is the high end package, leather interior and such.
.096 is the spark plug gap
The 2006 GMC Sierra 3500 SLE with the LBZ 6.6 Duramax does not have a cabin filter.
The SLE is a Limited Editon Sedan with the 3.8 fuel injected V6. The SSEi is the sportier version with a Eaton Supercharger which ads about 35hp to the same engine. At least, in my experience. There may be some smaller engines in the SLE but the SSEi, I believe, always has the 3.8.