Idles high in park

Asked by Feb 17, 2014 at 08:41 PM about the 1999 Chevrolet Silverado 1500 3 Dr STD 4WD Extended Cab LB

Question type: Maintenance & Repair

In addition to my first question. I forgot to add I changed out the throttle positions
sensor and idle air control valve multiple times. Still idles high?

1 Answer

Un-metered air entering intake manifold. i.e. vacuum leak.

Best Answer

Your Answer

Add photo

Related Questions

  • Idles high in park? 1 answer

    My 1998 chevy Silverado idles high in park. Aprox. 1500 rpms. I keep getting throttle position sensor code and Idle air control valve. I don't understand it. Neither did part stores. What could it b...

    1999 Chevrolet Silverado 1500 3 Dr STD 4WD Extended Cab LB

    -

    Maintenance & Repair

  • Idles high in park 1 answer

    In addition to my first question. I forgot to add I changed out the throttle positions sensor and idle air control valve multiple times. Still idles high?

    1999 Chevrolet Silverado 1500 3 Dr STD 4WD Extended Cab LB

    -

    Maintenance & Repair

  • replaced trottle boby on my 2007 chevy silverado 5.3L and now the engine idles high when i put it in park. 1 answer

    2007 Chevrolet Silverado 1500 LT2 Crew Cab 4WD

    -

    Maintenance & Repair

  • 2005 Silverado Stuck in Park 1 answer

    I just finished changing my transmission oil and filter on my 2005 Silverado, 5.3L engine, 4L60-E automatic transmission. I also drained the oil from the torque convertor. After topping off the flui...

    2005 Chevrolet Silverado 1500 LS Short Bed 4WD

    -

    Maintenance & Repair

  • 1987 idles In park but dies off on gear 4 answers

    I have a 1987 chevy s10 2.8 v6 pick up I have changed the ignition module, coil, spark plugs, air idle control valve, spark plug wires, and fuel filter the truck idles on park but once in gear it d...

    1987 Chevrolet S-10 Tahoe Standard Cab 4WD LB

    -

    Maintenance & Repair

Search Chevrolet Silverado 1500 Questions

Chevrolet Silverado 1500 Experts

#1 John Carson
John Carson
Reputation 2,410
#2 Rowefast
Rowefast
Reputation 1,950
#3 tenspeed
tenspeed
Reputation 1,650
View All

Related Models For Sale

Used GMC Sierra 1500
789 Great Deals out of 68,701 listings starting at $1,800
Used Ford F-150
2,171 Great Deals out of 195,112 listings starting at $290
Used Dodge Ram 1500
418 Great Deals out of 10,945 listings starting at $1,000
Used Toyota Tundra
461 Great Deals out of 34,712 listings starting at $2,500
Used Toyota Tacoma
516 Great Deals out of 43,167 listings starting at $1,995
Used Chevrolet Tahoe
598 Great Deals out of 32,881 listings starting at $1,500
Used Chevrolet Camaro
351 Great Deals out of 31,370 listings starting at $2,500
Used Ford F-250 Super Duty
326 Great Deals out of 44,694 listings starting at $1,450
Used Chevrolet Silverado 2500
13 Great Deals out of 246 listings starting at $3,900

Used Cars For Sale

2017 Chevrolet Silverado 1500 For Sale
284 Great Deals out of 127,899 listings starting at $20,589
2016 Chevrolet Silverado 1500 For Sale
131 Great Deals out of 5,704 listings starting at $18,995
2015 Chevrolet Silverado 1500 For Sale
226 Great Deals out of 8,353 listings starting at $12,950
2014 Chevrolet Silverado 1500 For Sale
257 Great Deals out of 10,262 listings starting at $9,798
2013 Chevrolet Silverado 1500 For Sale
165 Great Deals out of 4,953 listings starting at $7,988

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.