2006 Tahoe. Will start but won’t run.

[Doubeleive]

That's prolly more relevant to the OP

I swapped relays around on mine w/ no change.

Bought all new main cables, then discovered the ground strap from the firewall to the hood was shredded.

Replaced it and all seemed good.

Radio is uncooperative now.
I'm thinking the ground issues and the on/off, etc popped the inline fuses.
Radio won't turn on at all. (Yes, it's an aftermarket unit)
Looks like I'm pulling the dash apart (again) this week.

The Big [emoji241]: 06 Z71 Suburban
105k miles
5.3/4L60e yada yada yada
No engine/drivetrain mods

3" spacers/HD coils in the rear
Adjustable rear track bar/panhard bar
Indexed keys with a couple turns in the front
SpindleSource UCA's, OE replacement LCA's

at any point in this did you disconnect the battery and let it sit a few minutes, reconnect the battery and try again? these trucks can be very finicky with power and residual power especially when the battery goes dead

 

[Charles_Colfax]

at any point in this did you disconnect the battery and let it sit a few minutes, reconnect the battery and try again? these trucks can be very finicky with power and residual power especially when the battery goes dead

I had both disconnected for an hour or so. I had the battery on my charger.
Then replaced the hood ground.
Then reconnected the battery.
"Radio" and "Radio Amp" fuses in the box under the hood are good.
If it's a fuse (which I hope) I figure it would be the one inline or the one on the back of the head unit.
I used all adapters , didn't run new wire.

The Big [emoji241]: 06 Z71 Suburban
105k miles
5.3/4L60e yada yada yada
No engine/drivetrain mods

3" spacers/HD coils in the rear
Adjustable rear track bar/panhard bar
Indexed keys with a couple turns in the front
SpindleSource UCA's, OE replacement LCA's

 

[Doubeleive]

I had both disconnected for an hour or so. I had the battery on my charger.
Then replaced the hood ground.
Then reconnected the battery.
"Radio" and "Radio Amp" fuses in the box under the hood are good.
If it's a fuse (which I hope) I figure it would be the one inline or the one on the back of the head unit.
I used all adapters , didn't run new wire.

The Big [emoji241]: 06 Z71 Suburban
105k miles
5.3/4L60e yada yada yada
No engine/drivetrain mods

3" spacers/HD coils in the rear
Adjustable rear track bar/panhard bar
Indexed keys with a couple turns in the front
SpindleSource UCA's, OE replacement LCA's

so you still have a no run situation? and the radio is a separate problem?
if you still have the no run issue and the fuel pressure is holding up as previously mentioned then I would start looking at the wiring harness, injector harness, ecu harness, etc. look for anything corroded or worn/frayed/broken/melted wires.

 

[Charles_Colfax]

so you still have a no run situation? and the radio is a separate problem?
if you still have the no run issue and the fuel pressure is holding up as previously mentioned then I would start looking at the wiring harness, injector harness, ecu harness, etc. look for anything corroded or worn/frayed/broken/melted wires.

No.
Starts and runs fine now.
Drove it to work this morning.

Radio issue started when I had the start/no run problem.
Radio would stay on even when key off.

After I replaced the hood ground strap, truck starts and runs.
But radio won't turn on at all.

The Big [emoji241]: 06 Z71 Suburban
105k miles
5.3/4L60e yada yada yada
No engine/drivetrain mods

3" spacers/HD coils in the rear
Adjustable rear track bar/panhard bar
Indexed keys with a couple turns in the front
SpindleSource UCA's, OE replacement LCA's

 

[Doubeleive]

could just be a radio module that died in the process then, did you use one that retains rap?

 

[Charles_Colfax]

could just be a radio module that died in the process then, did you use one that retains rap?

Yeah. Used all the adapters to retain the factory Bose amp, steering wheel controls, etc. And the SiriusXM receiver.
Will pull the dash this week and see.

The Big [emoji241]: 06 Z71 Suburban
105k miles
5.3/4L60e yada yada yada
No engine/drivetrain mods

3" spacers/HD coils in the rear
Adjustable rear track bar/panhard bar
Indexed keys with a couple turns in the front
SpindleSource UCA's, OE replacement LCA's