BlueZ71
Full Member
Hi All -
I have a 2002 Avalanche 1500 Z71. When I try to select 4hi or 4 low, or Auto 4wd, the selector light just blinks and either default back to 4wd, or just keeps blinking until I push 2wd again. I can feel the truck go into 4 low, and the gear ratio changes, but the light never stops blinking and the front axles don't engage either.
I can also make the transfer case go into neutral with no issues so it seems the transfer case computer is OK. I replaced the front axle actuator with no luck, was thinking about the encoder motor next, but there is so little good info out there on these 4wd systems.
Checked all the fuses, did the reset removing the TCCM fuse, and there is no service 4wd light on - any thoughts?
I have a 2002 Avalanche 1500 Z71. When I try to select 4hi or 4 low, or Auto 4wd, the selector light just blinks and either default back to 4wd, or just keeps blinking until I push 2wd again. I can feel the truck go into 4 low, and the gear ratio changes, but the light never stops blinking and the front axles don't engage either.
I can also make the transfer case go into neutral with no issues so it seems the transfer case computer is OK. I replaced the front axle actuator with no luck, was thinking about the encoder motor next, but there is so little good info out there on these 4wd systems.
Checked all the fuses, did the reset removing the TCCM fuse, and there is no service 4wd light on - any thoughts?