03 Yxl Denali

[djm3000]

I was hoping you might help with some thoughts on my YXL Denali Troubles.

 

VIN 1GKFK66UX3J157197

 

Truck has self leveling suspension that stopped leveling about 6 months ago - with accompanying error message.

 

About 3 months ago I would get intermittant "stability system deactivated" errors - particularly when it was raining out.

 

A few weeks ago I was pulling out of my driveway and all of a sudden the power steering would not work turning left. It still worked turning right.

 

I took it to a local mechanic shop that car guys I know have had a good experience with and they advised that there is a slide valve in the steering gear that is stuck/dirty and is inhibiting turning left. My thought is that the pump pressure + hydroboost would explode a power steering line if there was a stuck valve and build up in pressure.

 

Mechanic did a diagnostic check and came up with C0660 LEVEL CONTROL VALVE MALFUNCTION.

 

Mechanic want to replace the Steering Gear. I can do that myself, provided I get the right one. I have checked VIN look up sites and cannot figure out of mine has Y91 or not.

 

Any thoughts -other than this is a disorganized late night ramble?

[Sir Dan]

If Y91 is an RPO code, then it would be found on the sticker in your glove box where they are all listed.

[djm3000]

If Y91 is an RPO code, then it would be found on the sticker in your glove box where they are all listed.

 

Will check! Thank you.

 

Dave