John manner 2011-07-29 14:52:04
I have a Blazer that refuses to shift into 4×4 when it is cold outside.
During the summer, it shifts perfectly fine. Because of this fact, I’m
thinking it is the shift motor. I would love to pull the code on it,
but my scan tool will not read ABS or 4×4 codes, only a Tech2 will do
that. You also can not ground a terminal on the scan port to flash the
codes. Any help would be welcome.
Adam f 2011-07-29 14:52:14
sounds to me like u may be right, but does it have the 4 button system or 3?
John manner 2011-07-29 14:52:35
It has the 4-button Auto 4×4 System
Adam f 2011-07-29 14:52:39
Probally the same problem, the TCCM is going out.
John manner 2011-07-29 14:53:15
You had the same issue? It worked find in the summer, but had problems
in the Winter?
Adam f 2011-07-29 14:53:19
yeah and in the winter, it quit working completely and never worked again
till we bought a new computer for it.