Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by mike reeh, Aug 31, 2003.
Anyone know what trouble code 85 is? The manual doesnt say....
I checked my factory manual and the net and couldn't find code 85. The highest code number is 55 for faulty ECM.
404 page not found
The only thing I could find on the 'net was:
85 undefined gear ratio
It lists 85 as:
PROM Error or Undefined Gear Ratio Error (input or output sensor failure)
TCC error - TCC is mechanically stuck "on"
Separate names with a comma.