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C1500 Suburban

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Needs to pass smog check..
If the check engine light is only coming on when your on the freeway it might be a problem that the computer is only recognizing at cruising speeds. Your best bet would be to have a certified mechanic read the...
Ignition stuck.
I would try the spare key a few times to see if its a problem with the individual key or the tumblers in the lock cylinder itself, if it works with the spare have a few copies but if you...
Vibration above 60 MPH.
Hello, a bad vibration should be handled sooner than later since it can cause handling issues and wear on components. I would start by lifting the front of the vehicle with a jack and put it on frame stands. Spin...
Vehicle running rough and stalling
Hi, in this case, the PCV should be checked, it may be a little dirty. The elbow on the vacuum line at the throttle body may need to be replaced. Inspect for cracked vacuum line from the throttle body to...
Timing off
The pinion teeth of the starter motor engage with the teeth on the flex plate, and the starter motor cranks over the engine. I don't see how you could have messed up your timing during a starter replacement. But it...
Loud knocking from engine area
Loud knocking sounds from the engine are often a sign of catastrophic failure, but not in every case. Inspect the engine oil level, and look for metallic flakes floating within the oil. Worn or broken parts along the engines belt...
Headlights not working?
The multi-function switch is a common fault with your Chevrolet C1500 Suburban. Sometimes the lights don't work at all. Other times the high beams will work but not the low beams. Moving the column up and down could possibly indicate...
Cruise control quit working
Thanks for writing in about your 1998 Chevrolet C1500 Suburban. I would want to diagnose the brake pedal switch first so I wouldn't replace one that is working fine. A technician using scan tool will easily be able to see...
Check engine light and P1345 code
I'm thinking that they may have sold you a V6 distributor. Remove the rotor and look at the top of the vane cup for a "6" or an "8". It there is a 6, it's a V6 distributor and won't...
Suburban idling high and won't accelerate
The symptoms that you are experiencing with your Chevy have lead me to believe that your Suburban is experiencing issues with its’ Throttle Position Sensor (TPS). If the TPS is failing, it will duplicate many of the symptoms that have...
Problem starting GMC
There can be a variety of reasons why your GMC is experiencing an intermittent no start. A faulty park/neutral switch or a failing ignition switch can definitely duplicate the symptoms you are experiencing with your vehicle. To be 100% certain...
Trouble code P0455
You should have a mechanic use a smoke machine to test the system for leaks. The purge valve may be leaking causing it to not hold any vapor in the tank at idle. If this occurs it will cause the...
Just bought ran good 100 km now stalls at Red lights
This may be a sign of a failing mass air flow sensor, a failing idle air control valve or potentially a clogged catalytic converter. As you may already know, the catalytic converter converts toxic exhaust gases into less harmful pollutants...
I think my starter is misaligned.
This is often times a result of the starter solenoid being misaligned and not reaching out far enough to the flywheel. You will notice on the starter solenoid there are bolt holes that allow for a slight adjustment. This allows...
misfire on cylinder 4
You had everything serviced except the one thing that will fix the problem. The problem is your central sequential fuel injection system has a clogged or defective injector to the number 4 cylinder. Following the manufacture technical service bulletin 00-66-04-00-30...
Car hesitation from stop to acceleration
Hi, thanks for writing in. Prior to further diagnostics you should install the spark plugs that are referred to in the factory service manual and/or obtain the plugs from a GM dealer. Installing alternative aftermarket plugs with different gaps, materials,...
Brakes pedal kicks back, abs light turns on and prevents gears to shift.
The warning light about the Anti-lock Braking System (ABS) is telling you it is activating. If this is happening on dry pavement, then it is likely a malfunction with the ABS. You definitely want to get this checked out ASAP....

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