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Some Haynes manuals have ECU codes
Have vehicle scanned to determine problem and have codes cleared
If you don't have an own error code reader. You can use a free service at Auto Zone. They can pull trouble codes out for you for free.
You need OBD2 reader or scanner to get the codes
how do you change an alternator on a 2003 chevrolet suburban?
The 2003 Chevrolet Suburban has a V8 engine.
The 2003 Chevrolet Suburban has 16 valves.
The 2003 Chevrolet Suburban has overhead valves (OHV).
The 2003 Chevrolet Suburban has a 4-speed automatic.
The 2003 Chevrolet Suburban's turning circle is 42.3 ft..
The maximum payload of the 2003 Chevrolet Suburban is 1677 lbs..
The 2003 Chevrolet Suburban is 18 ft. 3.3 in. (219.3 in.) long.