Replacing fuel sending unit - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-10-2009, 08:13 PM   #11
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Can you post some pistures of where you are at?
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Old 03-10-2009, 08:47 PM   #12
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Ok.. looking at the three metal lines where they head into the tank there is a metal retaining ring. It slides under part of the tank and has some tabs that stick up. You can tap those tabs counter clockwise with a screwdriver and hammer ...since no one owns the proper tool for the job.

Take a look at your new sender. It will have the sender, an o-ring and a new metal lock ring. That may give you a better understanding.

When you tap only one tab..the ring will move off center. Tap the next tab and so forth to center the ring and get it moving better. If the ring moves far enough off center use the screwdriver to recenter it and tap away. Wont take much to get it done, don't be afraid of it. You'll get it.
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Old 04-09-2009, 03:28 AM   #13
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Rotating ring; unlock is i think counter clockwise. Then the whole assy just lifts out. Make sure to use a new O ring when you put the new unit in--mine leaked because we didn't. The aftermarket fuel sender assemblies ($80) come with a new locking ring and o-ring. The factory assembly ($460) does not. The o-ring is separate ($14).

I am having an aftermarket assy installed next week--my $460 factory unit lasted 9 months, then the float cracked. So far I have not found a source for the float only.
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