2001 GMC Sierra 1500 HD Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2001 GMC Sierra 1500 HD
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2001 GMC Sierra 1500 HD ProblemsInstrument Panel Lights Flickering and Exterior Lights Intermittent
The headlight switch used on the GMC Sierra 1500 HD is known to fail through normal operation. Since the headlight switch is also integrated into the interior lights, a malfunctioning switch can cause issues with interior lights as well.
- Symptoms of a failed headlight switch include:
- Headlights and taillights failing to turn on or off
- Interior lights flicker, or fail to turn on or off
- Gauge cluster lighting off or flickering with headlights on
- Parking light malfunctions
This issue is well known with General Motors Trucks and SUVs, and is solved by testing and, if needed, replacing the headlight/dimmer switch. Bad grounding wires at the tail-lights, and dirty/corroded tow package wires can also lead to some of these issues.
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
The spark plugs should be replaced every 100,000 miles. Our technicians recommend replacing the spark plug wires also at this time.
2001 GMC Sierra 1500 HD QuestionsHard to start (1 answer)
last week new tune up (plugs / wires), new air and fuel filter, new fuel regulator
when i turn on key fuel gauge goes to 55 psi and then drops to 0 psi, but when i turn key the rest of the way to start it starts (sometime i crank for 3 sec and stop then start cranking and it starts) then fuel p...
it could be a security anti theft problem, also put in a new key and ignition
truck has new starter , new battery , all fuses have been checked, but when trying to start vehicle nothing happens , lights on dash come on but engine doesnt do anything, what other things can i check for or what might be the issue