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Anybody have sticking throttle problem?

1999GMCZ-71

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1999GMCZ-71 Enthusiast

1999GMCZ-71

Posted
Posted

The throttle on my 99 Z71 Sierra seems to stick at idle every once in a while. Has anybody else had this problem? Seems i might have read a TSB on it maybe somewhere, but can't find it now. If there is a TSB on it, will the dealer fix it for free, or am i asking for way to much.....?

debo4x4 Enthusiast

debo4x4

Posted
Posted

There is a TSB for throttle body cleaning, as long as you're still under warrenty the dealer should fix for free. I no warrenty, try some good throttle body cleaner and do it yourself. Make sure you clean the butterfly very well becasue that is the part that usually sticks.

chevy2000 Enthusiast

chevy2000

Posted
Posted

I just recently had my sticking throttle fixed at the dealer. I can't remember how they worded the exact problem, but I have an extend warranty, and it didn't cost me a thing. The dealer should fix it for you!

Thanks

dukbludvl Enthusiast

dukbludvl

Posted
Posted

I had that problem 6 months ago, after putting 45K miles on my 2000 truck. Just buy a $2 can of throttle body cleaner, spray it on a rag, and clean it yourself. Mine has been fine since then. I'll probably do it every couple years or whenever the sticking starts again. It's just carbon build-up that causes that problem. Should be an easy DIY job. Let me know if you need more info. Not worth the trip to the dealer in my opinion.

Dex857 Enthusiast

Dex857

Posted
Posted

My '99 Silverado did it to with 45k on the OD. took it to a dealer and asked them to comp me because of the TBS. they did.. No charge.

Has work ever since. about 3 years.

 

:)

GnatGoSplat Enthusiast

GnatGoSplat

Posted
Posted

Mine was doing it when I bought it. I cleaned out the TB and used a metal polishing attachment on the end of a Wizard rotary tool to smooth the edges of the throttle plate. Worked like a charm, 1yr later and no stiction.

jeffdb Enthusiast

jeffdb

Posted
Posted

My 98 Astro 4.3 did this. It seems that where the cable hooks to the throttle body, there is a stop and mine was sticking there. Mine had an allen wrench screw for the stop and I turned it a couple turns and it hasn't stuck again. The idle only increased very slightly.

WEFs99 Enthusiast

WEFs99

Posted
Posted

It is easier and quicker for you to clean it yourself rather than waste all that time in the dealers waiting room watching soap operas.

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