Search results
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P0420 Code Issues
The hesitation seems to have been fixed by the timing being adjusted, with SnapOn scan tool. The guy I'm now taking it to was a long time GM tech and has a 97 z71 with the same motor. At this point, I definitely trust his abilities. The truck is running strong and better than ever minus the...- thardy3
- Post #19
- Forum: Engine & Drivetrain
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P0420 Code Issues
Alright, so here's the latest. Last week, had the truck at the trusted mechanic shop. The SES light was not on when I dropped it off, I had cleared the the P0420 a week or so before. Because I had put about 200-300 miles since the last SES light, he scanned the truck and it said "Ready" for...- thardy3
- Post #15
- Forum: Engine & Drivetrain
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P0420 Code Issues
Will do! I'll keep you posted. Thanks for the help.- thardy3
- Post #14
- Forum: Engine & Drivetrain
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P0420 Code Issues
Replace the converters again? It was done 6 months ago. And I have brand new AC Delco rear o2 sensors that I put in about a month ago.- thardy3
- Post #12
- Forum: Engine & Drivetrain
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P0420 Code Issues
Looks like I'm going to end up dropping her off at a shop next week. Really don't want to, but I'm tired of trying to figure this out. Let me know if anyone has any ideas.- thardy3
- Post #10
- Forum: Engine & Drivetrain
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P0420 Code Issues
Alright, so my P0420 code and rough running is back. The hesitation as previously described only went away for a day or two but it took upwards of 300 or so miles before the code popped back up. Any other thoughts as to what the cause could be here? I need to try and have these resolved SOON...- thardy3
- Post #9
- Forum: Engine & Drivetrain
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P0420 Code Issues
I swapped out the two rear O2 sensors and it became clear that my somewhat rough running was unrelated. We discovered that my brake booster was leaking causing a vacuum leak. We replaced the brake booster and she's running like a champ! Also got the AC fixed, FINALLY!- thardy3
- Post #7
- Forum: Engine & Drivetrain
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P0420 Code Issues
Can anyone help me out on my above question? I'm wanting to get sensors ordered for both sides (downstream), just want to make sure I order the right ones.- thardy3
- Post #4
- Forum: Engine & Drivetrain
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P0420 Code Issues
Something told me that was going to be an issue. I've located the Delco part number for the bank 1 side (after cat), AFS106, do you happen to know the part number for the bank 2 side (after cat)?- thardy3
- Post #3
- Forum: Engine & Drivetrain
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P0420 Code Issues
So, I'll start from the top. I've been chasing issues on my 99 2dr, 192k miles, since the beginning of 2013. It started with misfire issues, changed out plugs, wires, rotor, and cap. That did not solve this issue, turned out to be a bad catalytic converter. Swapped both out with weld-in...- thardy3
- Thread
- Replies: 22
- Forum: Engine & Drivetrain
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Random Misfire Codes
So, this has been something that I've been chasing for about a week now in my '99 Tahoe 5.7. I'll start from the top. About a week ago, jumped on the highway to leave work, got up to cruising speed, and when I tried to accelerate slightly I felt and heard it misfire. Looked down and saw the...- thardy3
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- Replies: 3
- Forum: Engine & Drivetrain
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Parking Brake Cable
The parking brake cable on my '99 has come undone from the pedal assembly and I cant figure out how to put it back together. When it happened, a pin fell down to the floor board. I have the part but cant figure out how its suppose to go back together. Any thoughts or pics of how its suppose...- thardy3
- Thread
- Replies: 2
- Forum: Engine & Drivetrain
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Dark Argent Fender Flare Oxidation
Definitely interested in finding out how things progress with this. I'm having the same issue with the '99 I picked up earlier this year. I'm soon to be moving into a house with a garage, FINALLY, and was planning on prepping and painting the fenders and grill, and may be even the bumpers and... -
Fan Blower Switch
Swapped out the switch and it's now working! Too bad it still only blows hot air. Got to fix the leak I've got, I think it's the drier, and hopefully I will have AC again before it starts to cool off. -
Fan Blower Switch
This is my first post on here even though I've been a member since I bought by '99 2-door earlier this year. So far the forum has been very helpful in some of the issues I've run across, so I'm hoping someone can help me with my current issue. Other than the fact that my AC system has a...
