The basics for problems at higher rpms, check for blockage of some kind. The first two things I think of are fuel and exhaust. Is your transmission ok? Now, with high idle, I block off mouth of throttle body, it should kill the engine, if very little or no effect, you got false air getting in there from somewhere? How long since tune-up? Any applicable trouble codes? I don't know what testing you have done?
My truck wont go past 20 mph and the rpm stays at the 2
2002 Chevrolet Tahoe 4WD
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Maintenance & Repair
Why don't my brake lights brakes on my 2002 Chevy Tahoe 3.5
2002 Chevrolet Tahoe LT RWD
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Maintenance & Repair
My tahoe starts but wen i put in reverse it died. Wat cld b the problem
2002 Chevrolet Tahoe LS RWD
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Maintenance & Repair
I've got a 2002 Chevy Tahoe with the towing package, and the passenger side tail light isn't working, but the bulb lights up just fine when you hit the brakes. Replaced the bulb, replaced the socket ...
2002 Chevrolet Tahoe
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Maintenance & Repair
Tahoe is 2002 4x4. This happens once or twice a month where it takes several times to get out Tahoe to start. Take key out, try wiggling shifter, put it in neutral then back into park. We have ch...
2002 Chevrolet Tahoe LS 4WD
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Maintenance & Repair
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