GM Full-Size Trucks 1980-1987 Repair Guide

Adjustments

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COLUMN SHIFT



See Figure 1

Click image to see an enlarged view

Fig. Fig. 1: Three speed column shift linkage. Note gauge pin for aligning the shift levers

  1. Place the column lever in the neutral position.
  2.  
  3. Under the truck, loosen the shift rod clamps. These are at the transmission.
  4.  
  5. Make sure that the two levers on the transmission are in their center, neutral positions.
  6.  
  7. Install a 3 /16 in. to 7 /32 in. pin or drill bit through the alignment holes in the levers at the bottom of the steering column. This holds these levers in the neutral position.
  8.  
  9. Tighten the shift rod clamps.
  10.  
  11. Remove the pin and check the shifting operation.
  12.  

FLOOR SHIFT



See Figure 2

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Fig. Fig. 2: Three and four speed floor shift linkages, showing gauge pin holes for adjustment

Place the shift lever in neutral. A 0.249-0.250 in. gauge pin must fit freely through the shifter levers (see illustration) in the neutral position. A 1 /4 in. or D size (0.249&inch;) drill bit will work here. Adjust the linkage at the point shown until the gauge pin fits properly. Check adjustment by operating the shift lever through every gear shift combination.

 
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