Re: 99 Silverado Rough Start
This post is long overdue. Turns out it was not the TB. Problem returned after the outside temp warmed up. It was real cold (single digits) when I cleaned the TB but when the temp got back up in the 30's the problem returned. Let it sit 2 hours after running and put a fuel pressure gauge on it and had 0 psi. Pulled the vacuum line and gas ran out. Put in a new press reg and it's been running fine now for 2 months. Problem solved.
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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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