The 88 year transmission will not work in the 99 because of the computer in the 99. You need a 4L60E from the year 1993 to 1995 and then it goes to 1998 to 1999. 1996 and 1997 transmissions will not work.
Now if your 99 is the NEW BODY DESIGN truck then you can use these year 4L60E transmissions. From LATE MONTH 1999 to 2006 will work.
YES.
That would be the 4L60E transmission.
From truck to truck, yeah, they are the same.
No it does not.
Yes those 2 years are the same. Direct bolt in.
That would be a 4L60E transmission.
NO. They are different.
It is a 4L60E
No it will not, There is not enough room for it to fit. A car transmission is alot smaller then a truck transmission.
That would be a 4L60E transmission. That is what belongs in the truck and came in that truck from the factory. NEUTZ.
Only depends on the engines. If they're the same engine then ya they'll bolt right up.
NO it will not. The computer system is DIFFERENT for those 2 transmission.