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 ProblemsService 4WD Message May be Displayed
The 4WD transfer case encoder motor position sensor or the selector switch may fail causing the service 4WD message to be displayed. Fault code(s) stored in the transfer case control module will be of assistance in determining the exact fault causing the message to be displayed.
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.
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.
1999 GMC Sierra 1500 QuestionsWhy is GM not issuing a recall to fix the passlock system for free? (2 answers)
We have replaced numerous things that were expensive and we were left stranded with no vehicle due to this ongoing issue. I read about everyone complaining on different forums about being stranded and unable to use the vehicle because we refuse to go to a GM dealership and pay over 500 to 1500 do...
New plugs wires air filter oil change oil filter. Cleaned throttle body and replaced gasket 3 weeks ago. Had a rough idle before tune up and still does. Fuel filter was changed about 6 months ago. Why will truck not stay running.
it just started. i smell the coolant fluid inside the truck when i drive. is this a big problem?