The truck - 1999 4 door, 2 wheel drive, LT Tahoe.
The history - owned by me since new, garage kept .Light duty, 140,000 miles. dealer maintained until 2009. Not driven since 2012.(but started every 3 or 4 months). No rust, paint/leather good to excellent, no accidents. Cleaned the throttle body right before parking it in 2012.
The issue - misfire codes, downstream O2 sensor codes (both). Review of paper work indicates that plugs/wires/ cap & rotor have not ever been changed (!).
Advice so far - The guy at the State Inspection facility suggested that I just do plugs/wires cap and rotor then rund 2 tanks of gas w/RXP through it to clear o2 sensors. I'll likely follow this advice.
The question - Reading around here and other web sources seems to indicate that these old Vortecs are happiest when treated to OE parts during tune ups. Seems reasonable, not too expensive, and easy to obtain. BUT - I see 2 sets of wires, apparently the same wire, one set is simply 'cut to length' as were the original wires and the other are a 'one size reaches all cylinders'. For the price difference I am inclined to spend a bit more for the proper length, however various reviews on-line indicate that it might not be the best choice. A fair amount of complaints of assorted causes for the correct length set and many happy reviews for the single length wires. Still, many, but not all, do not seem to be from Tahoe "enthusiasts" but just guys on the street. I would prefer to stay with the GM parts and since I'm not upgrading the coil and using stock plugs it doesn't seem worth it to get 'performance' wires.
The history - owned by me since new, garage kept .Light duty, 140,000 miles. dealer maintained until 2009. Not driven since 2012.(but started every 3 or 4 months). No rust, paint/leather good to excellent, no accidents. Cleaned the throttle body right before parking it in 2012.
The issue - misfire codes, downstream O2 sensor codes (both). Review of paper work indicates that plugs/wires/ cap & rotor have not ever been changed (!).
Advice so far - The guy at the State Inspection facility suggested that I just do plugs/wires cap and rotor then rund 2 tanks of gas w/RXP through it to clear o2 sensors. I'll likely follow this advice.
The question - Reading around here and other web sources seems to indicate that these old Vortecs are happiest when treated to OE parts during tune ups. Seems reasonable, not too expensive, and easy to obtain. BUT - I see 2 sets of wires, apparently the same wire, one set is simply 'cut to length' as were the original wires and the other are a 'one size reaches all cylinders'. For the price difference I am inclined to spend a bit more for the proper length, however various reviews on-line indicate that it might not be the best choice. A fair amount of complaints of assorted causes for the correct length set and many happy reviews for the single length wires. Still, many, but not all, do not seem to be from Tahoe "enthusiasts" but just guys on the street. I would prefer to stay with the GM parts and since I'm not upgrading the coil and using stock plugs it doesn't seem worth it to get 'performance' wires.