torque converter?? (shudder) - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

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Old 12-27-2007, 08:34 PM   #1
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Default torque converter?? (shudder)

1988 Lesabre, with vehicle at operating temp I am getting a shudder at around 50 mph. this problem occurs in overdrive and third gear, if I lightly apply the brakes while not backing off the gas the RPMs increase and shudder goes away, as soon as i let off the brake it returns. Trans fluid is full and I've added sea Foam .I've been through all ignition components ( coil and module, ecm, wires, plugs. O2 sensor, egr and more) . Thanks for any and all help.
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Old 12-28-2007, 12:54 PM   #2
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Default shudder

Give the additive a chance to work.
When was the last time the fluid and filter was changed?
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