GM Caprice 1990-1993 Repair Guide

Automatic Transmission

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FLUID RECOMMENDATIONS AND LEVEL CHECK



See Figures 1, 2 and 3



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Fig. Fig. 1: Remove the transmission dipstick to check the fluidlevel with the engine idling in Park



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Fig. Fig. 2: Automatic transmission dipstick marks; the properlevel is within the shaded area



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Fig. Fig. 3: Add automatic transmission fluid throughthe dipstick tube

Check the automatic transmission fluid level at least every 6000 miles. The dipstick can be found in the rear of the engine compartment. The fluid level should be checked only when the transmission is hot (normal operating temperature). Use only Dexron®II automatic transmission fluid..

  1. Park the car on a level surface with the engine idling. Shift the transmission into Park and set the parking brake.
  2.  
  3. Remove the dipstick, wipe it clean and then reinsert it firmly. Be sure that it has been pushed all the way in. Remove the dipstick again and check the fluid level while holding it horizontally. With the engine running, the fluid level should be between the second notch and the FULL HOT line. If the fluid must be checked when it is cool, the level should be between the first and second notches.
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  5. If the fluid level is below the second notch (engine hot) or the first notch (engine cold), add DEXRON®II automatic transmission fluid through the dipstick tube. This is easily done with the aid of a funnel. Check the level often as you are filling the transmission, be extremely careful not to overfill it. Overfilling will cause slippage, seal damage and overheating. Approximately one pint of ATF will raise the fluid level from one notch/line to the other.
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The fluid on the dipstick should always be a bright red color. If it is discolored (brown or black), or smells burnt, serious transmission troubles, probably due to overheating, should be suspected. The transmission should be inspected by a qualified technician to locate the cause of the burnt fluid.

DRAIN AND REFILL



PAN AND FILTER SERVICE



The automatic transmission fluid and filter should be changed every 15,000 miles if your Caprice is driven in heavy city traffic in hot weather, in hilly or mountainous terrain, frequent trailer pulling, or uses such as found in taxi, police car or delivery service. If your Caprice is driven other than the conditions listed above, change the fluid and filter every 30,000 miles.

  1. Raise and safely support the car on jackstands. Place an oil catch pan under the transmission.
  2.  
  3. Remove the oil pan bolts from the front and sides only.
  4.  
  5. Loosen rear oil pan bolts approximately 4 turns.
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WARNING
Do not damage the transmission case or oil pan sealing surfaces.

  1. Lightly tap the oil pan with a rubber mallet or a pry it to allow fluid to drain.
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  3. Remove the remaining oil pan bolts, then remove the oil pan and pan gasket.
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  5. Remove the filter and O-ring.
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  7. Clean the transmission case and oil pan gasket surfaces with suitable solvent and air dry. Make sure to remove all traces of the old gasket.
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  9. To install, coat the O-ring seal with a small amount of oil.
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  11. Install the new O-ring onto the filter.
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  13. Install the new filter into the case.
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  15. Install the oil pan and new gasket.
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  17. Install the oil pan bolts and tighten them to 15 ft. lbs. (20 Nm).
  18.  
  19. Lower the car.
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  21. Fill the transmission to proper level with Dexron®II fluid.
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  23. Check cold fluid level reading for initial fill. Do not overfill the transmission.
  24.  
  25. Follow the fluid level check procedure described before.
  26.  
  27. Check the oil pan gasket for leaks.
  28.  

 
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