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JFN1
JFN1, ASE Certified Technician
Category: Transmissions
Satisfied Customers: 4431
Experience:  ASE Master Technician ASE L1 Certified Technician
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My 1997 blazer will not shift.the problem started as soon as

Customer Question

My 1997 blazer will not shift.the problem started as soon as the weather turned colder.I am not sure if I need a powertrain control module or body mount control module.I know this is limited info but I do get tranny codes.any thoughts.
Submitted: 11 months ago.
Category: Transmissions
Expert:  JFN1 replied 11 months ago.

What transmission codes do you have?

Customer: replied 11 months ago.
Don't know specific codes.
Expert:  JFN1 replied 11 months ago.

That would be very helpful. If there is a code for a shift solenoid, the computer will simply disable shifting and leave you with 2nd gear only. I don't think you need a computer replacement, you likely just have a failed solenoid or something like that. Trouble codes would go a long way towards narrowing it down.