Cruise control fuse # 31 10amp located in the under hood fuse / relay box an HZDFL fuse # 40 15amp located in the center console fuse box . If you pull the plastic side panel off of the right side of the console there is a fuse box inside . If the fuse are good the control module could be bad . Could also be turned off because the ABS has a problem .
DTC P1554 - do you know what a diagnostic trouble code is ?
The powertrain control module (PCM) has the ability to inhibit cruise control operation if conditions exist that would make cruise operation undesirable. The following conditions may inhibit cruise control operation:
• The engine speed is too high or too low.
• The vehicle speed is too high or too low.
• The traction control has been active for longer than 1 second.
• The vehicle acceleration or deceleration rate is too high
If the ABS light is on ,there are DTC'S stored in the system . Your best bet , take it to a GM dealer or someother qualified repair shop.
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