Jumpy Cruise Control - 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 06-06-2003, 03:40 PM   #11
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its only when the car is in OD and the rpms are ~2000. unfortunatly this is where the car is usually at. Ive gotten it from 60-80, its not dependent on the mph, its more related to the rpm. I thought it would be the TPS but it never happens in other gears.

I am not going to rule out the TPS, i would rather replace a $70 sensor than get a new tranny, but I dont want to get both either. Where would I get scanner to rule out one or the other? I usually only use the cruise at 60+ mph.
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Old 06-06-2003, 04:18 PM   #12
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An auto parts store will scan for codes for free, but you need to drive it while you're tapped into the data stream to see what the trans/tps are doing. It'll even tell you what the cruise is doing. You'll need to buy, borrow, or steal a scanner, or get your mechanic who suspects the tranny to go along with his scanner......to back up his suspicions.

Do you live near any other member that may have a scantool?
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Old 06-06-2003, 05:25 PM   #13
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DrJay here to show love. Two things I would narrow it down to. ONE: If the cruise control doesn't stay engaged, or drops out of cruise, the brake switch can usually be adjusted. But since its only OD that your seeing it that narrows it down to: 4T60E transmissions may drop out of drive while cruising; shift erratically; or have no second, third, or fourth gear because of a bad ground connection for the shift solenoids. So your mechanic was right, the solenoid is probably the culprit but fixing a ground I'm sure is cheaper than replacing it. Take that info to your mechanic and see what he says.
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Old 06-07-2003, 02:26 AM   #14
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we have a local shop that specializes in trannys. I will probably take it there and get their opinio, I probaby need a flush anyway (its getting a little rough).
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