1988 Buick Lesabre codes

Tiny
KCANDANT
  • MEMBER
  • 1988 BUICK LESABRE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 186,000 MILES
I had my car checked at aotuzone on their computer and the code came up 26, 27, 28, 29 Quad driver module circuit. Can you tell me what this means.
Saturday, May 3rd, 2008 AT 11:02 AM

1 Reply

Tiny
ROB2008
  • MECHANIC
  • 258 POSTS
A quad driver is a part of the engine module that controls 4 circuits. You would have to find a chart that shows you what is controlled by the driver. One of the solenoids on that circuit is probably either shorted or has an open circuit. There are a couple of solenoids in the transmission that could cause the code to set.
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Saturday, May 3rd, 2008 AT 11:34 AM

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