GMC 1997 Suburban - Shifting from 4 HI to 2 HI; Shifting from 2 HI or 4 HI to 4 LO; Shifting from 4 LO to 4 HI or 2 HI

Shifting from 4HI to 2HI
Press and release the 2HI switch. This can be done at
any speed, and the system will unlock automatically.
Shifting from 2HI or 4HI to 4LO
To shift from 2HI or 4HI to 4L0, the vehicle must be
stopped or moving less than 3 mph (4.8
kmh) with the
transmission
in NEUTRAL (N). The preferred method
for shifting into 4LO is to have your vehicle moving 1 to
2 mph ( 1.6 to 3.2 km/h). Press and release the 4LO
switch. You must wait for the 4LO indicator light to stop
flashing and remain illuminated before shifting your
transmission into gear.
If the 4LO switch is pressed when your vehicle is in
for
30 seconds and not complete the shift unless your
vehicle is moving slower than 3 mph (4.8 kdh) and the
transmission is in NEUTRAL
(N).
b *ear and/or moving, the 4LO indicator light will flash
Shifting from 4LO to 4HI or 2HI
To shift from 4LO to 4HI or 2H1, your vehicle must be
stopped or moving less than
3 mph (4.8 km/h) with the
transmission in NEUTRAL
(N). The preferred method
for shifting out of 4LO
is to have your vehicle moving
1 to 2 mph (1.6 to 3.2 kmh). Press and release the 4HI
switch. You must wait for the 4HI indicator light to stop
flashing and remain illuminated before shifting your
transmission into gear.
If the 4HI switch is pressed when your vehicle is in gear
and/or moving, the 4HI indicator light will flash for
30 seconds but will not complete the shift unless the
vehicle is moving slower than 3 mph (4.8 kmh) and the
transmission is in NEUTRAL
(N).
2-24