1991 Gmc Sonoma Remove Test Oil Pressure Sending Unit On 4 3 L Auto Transmission

1991 GMC SONOMA
139,000 MILES
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BOBALLENCAR
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  • 2 POSTS
how do i remove and test the oil pressure sending unit on the 4.3 l auto transmission with a/c. i think the needle on the dash is just flipping back and forth rapidly like there is something wrong with the guage in the dash.. do not want to replace gauge inside dash as i have had this area apart before and it is very difficult to get all of the a/c controls hooked back up....is there a special tool required to remove the sending unit or just a tool that i need to purchase such as an open end wrench.????
Feb 10, 2013 at 12:08 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
there is a socket for this available at a parts store.

use a manual gauge to verify pressure. the sender is a common failure

Roy
Feb 10, 2013 at 12:10 PM
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BOBALLENCAR
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  • 2 POSTS
what is a manual guage, the sending unit is electrical
Feb 10, 2013 at 12:28 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
you can rent one from a parts store to insert where the sender goes on the motor to verify the actual pressure

Roy
Feb 10, 2013 at 12:30 PM
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