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Re: 99 Silverado Rough Start
I just remove the intake duct and spray cleaner in and use a paper shop towel to clean it out. This always fixes the sticky throttle problem. You're right, though, there could be crud on the back side that I'm not getting out. I'll pull the TB and clean it and the IAC port when I get time. Thanks!
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72 GMC Sierra Grande SWB 402 BB A/C
(Owned it since 1973)
99 Silverado 1500 LT with 315K miles
(RIP)
2012 GMC Sierra SLT
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