99 Chevy Tahoe 5.7 4WD Mode 6 data

[KLHill]

New to the group and thanks for having me. I've got a 99 Chevy Tahoe 5.7V 4WD with 304,000 miles and its still going, but it does have its issues. I've replaced both downstream O2 sensors, the distributor and cap, plugs and wires, ignition wiring harness and cylinder. The cluster is shot and needs to be replaced so I'm not getting check engine lights, the tach and speedometer max out at idle and I'm not sure I can trust my other gauges although the fuel and temp look right. I'm using a BlueDriver OBD2 scanner and as of yet have no P codes due to the fact they were cleared. So while I'm waiting for codes to be posted I do have my mode 6 scan and was wondering if anybody could explain what I'm looking at. I think it is showing O2 sensor but not sure, so here it is: As is, it runs fine, no noticeable misses and good acceleration and thank you for any thoughts.

Mode 6 Report Apr 09, 2025 10:59 AM
1999 CHEVROLET Tahoe

Last Entered Odometer: 304,843 mi
Lean to rich sensor threshold voltage (constant)
Status: Test not complete
TID:02 Min: - Val: -
CID:04 Max: -

Lean to rich sensor threshold voltage (constant)
Status: Test not complete
TID:02 Min: - Val: -
CID:26 Max: -

Lean to rich sensor threshold voltage (constant)
Status: Test not complete
TID:02 Min: - Val: -
CID:36 Max: -

Lean to rich sensor threshold voltage (constant)
Status: Test not complete
TID:02 Min: - Val: -
CID:46 Max: -

Lean to rich sensor threshold voltage (constant)
Status: Test not complete
TID:02 Min: - Val: -
CID:10 Max: -

Lean to rich sensor threshold voltage (constant)
Status: Test not complete
TID:02 Min: - Val: -
CID:20 Max: -

Lean to rich sensor threshold voltage (constant)
Status: Test not complete
TID:02 Min: - Val: -
CID:30 Max: -

Lean to rich sensor threshold voltage (constant)
Status: Test not complete
TID:02 Min: - Val: -
CID:40 Max: -

Lean to rich sensor threshold voltage (constant)
Status: Test not complete
TID:02 Min: - Val: -
CID:12 Max: -

Lean to rich sensor threshold voltage (constant)
Status: Test not complete
TID:02 Min: - Val: -
CID:11 Max: -

Lean to rich sensor threshold voltage (constant)
Status: Test not complete
TID:02 Min: - Val: -
CID:21 Max: -

Lean to rich sensor threshold voltage (constant)
Status: Test not complete
TID:02 Min: - Val: -
CID:31 Max: -

Lean to rich sensor switch time (calculated)
Status: Complete and Pass
TID:06 Min: - Val: 0x33
CID:35 Max: 0x53

Lean to rich sensor switch time (calculated)
Status: Complete and Pass
TID:06 Min: - Val: 0x30
CID:55 Max: 0x53

Lean to rich sensor switch time (calculated)
Status: Complete and Pass
TID:06 Min: - Val: 0x28
CID:61 Max: 0xD6

Lean to rich sensor switch time (calculated)
Status: Complete and Pass
TID:06 Min: - Val: 0x27
CID:41 Max: 0xD6

Minimum sensor voltage for test cycle (calculated)
Status: Test Fail
TID:07 Min: - Val: 0xDC00
CID:0C Max: 0x00

Minimum sensor voltage for test cycle (calculated)
Status: Test Fail
TID:07 Min: - Val: 0xFC2C
CID:0D Max: 0xC5

Manufacturer Defined Test
Status: Test not complete
TID:0C Min: - Val: -
CID:20 Max: -

Manufacturer Defined Test
Status: Complete and Pass
TID:0C Min: - Val: 0x00
CID:30 Max: 0x70

 

[th3 shifty]

Have you thought of changing the old injectors for the MPFI new style? I was having miss fires and and stumbles that threw lean or rich or miss for codes, changed all the ignition and wires and O2’s and a new distributor.. it was the crappy stock spider fuel injectors, once I changed that my truck n runs perfect

 

[th3 shifty]

I followed this guide