1999 GMC Sierra 1500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1999 GMC Sierra 1500
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1999 GMC Sierra 1500 ProblemsFuel Level Sensor Failure
It is common for the fuel level sensor in the fuel tank read the fuel level incorrectly. The sensor must be replaced to correct the condition. Our technicians recommend having the complete fuel pump module replaced on high mileage vehicles.
One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.
The anti-lock brake system (ABS) pump may stay running after the ignition is turned off causing the battery to go dead. Our technicians tell us that the ABS control module should be replaced to correct this fault.
1999 GMC Sierra 1500 Questionsi am smelling the coolant inside the cab and when i turn on the vent it will fog (1 answer)
it just started. i smell the coolant fluid inside the truck when i drive. is this a big problem?