Current GM 1500 Truck/SUV Offerings
1999-Early 2000
-2WD
Th400
T56
T6060
6l90e
4l80e
Driveshaft loop
Later 2000 – 2007 Classic
-2WD
Th400
Th350
Powerglide
T56
T6060
6l90e
6l80e
4l80e
-4WD/AWD
4l80e
Drive shaft loop
Coil spring oil pan xmember
2WD Torsion bar oil pan Xmember
2007 – 2013
-2WD
Th400
T56
T6060
6l90e
6l80e
4l80e
-4WD/AWD
4l80e
TBSS
2WD 4L80e
AWD 4L80e