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TSB
99-18-7
  • NOISE - "SQUAWKING" NOISE HEARD WHILE IN REVERSE BACKING UP - VEHICLES EQUIPPED WITH 5.4L OR 6.8L ENGINE
  • TRANSMISSION - 4R100 - "SQUAWKING" NOISE HEARD WHILE IN REVERSE BACKING UP - VEHICLES EQUIPPED WITH 5.4L OR 6.8L ENGINE
Publication Date: AUGUST 26, 1999

FORD:
1999 F-250 HD, SUPER DUTY F SERIES

This TSB article is being republished in its entirety to correctly list the Powertrain Control Module (PCM) reprogramming information.

ISSUE:

Some vehicles may exhibit a "squawking" noise while in Reverse backing up a slight grade and/or while applying the brakes. This may be caused by marginal line pressure in Reverse during this near torque converter stall condition.

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