Anybody have sticking throttle problem?

1999GMCZ-71 · July 16, 2003

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 · July 16, 2003

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 · July 16, 2003

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 · July 16, 2003

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 · July 17, 2003

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 · July 17, 2003

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 · July 17, 2003

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.