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SUPERTIGRE
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[code:1:726323f071]i check my oldsmobile silhouette,and i get 2 codes,56 and 26,one says 56 QDM 2 OR B ERROR
an the other one says 26 QDM 1 FAULT .
Do you know what they means ,what i have to check and how can i fix it.
thanks .
msupertigre.[/code:1:726323f071]
Mar 4, 2006 at 5:39 PM
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MVANNESSJR
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CODE 26

Trouble Code 26 indicates that the quad-driver is malfunctioning.

QDM symptoms:

Cooling fan(s) inoperative
Poor driveability due to 100% canister purge.
Coolant light "ON" all the time, "OFF" during bulb check.
EGR inoperative - Code 32.
TCC inoperative
This problem can be caused by:
1) Short to 12 volts on the control circuit by a shorted component.

2) Faulty ECM.
Mar 4, 2006 at 10:48 PM