Condition 
 | Action 
 | 
DEFINITION: No 1-2 upshift 
 | 
Park/neutral position switch (72) 
 | 
|     •  | Perform functional test on the park/neutral position switch (72). |  
  
|     •  | Replace park/neutral position switch (72) if fails test. |  
  
 | 
Transmission control module (TCM) 
 | 
|     •  | Inspect for operation of TCM and correct calibration. |  
  
|     •  | Re-cal TCM if necessary. |  
  
|     •  | Replace the TCM if faulty. |  
  
 | 
Valve body (39) 
 | Replace the valve body (39). 
 | 
Internal transmission part failure 
 | 
|     •  | Disassemble the transmission and inspect the following: |  
  
|        -  | Clutch assembly, O-rings cut or damaged, clutch disc failure |  
  
|        -  | Fluid pump worn or scored components |  
  
|     •  | Replace transmission if any internal parts are faulty. |  
  
 |