Strange Issues. Please help a brotha out.

[SDWallhanger]

We bought a 2007 GMC XL Denali this wknd with 163,000 on Odometer. When test driving it ran fine with no codes or messages other than low tire indicator. On way home from dealership we stopped at gas station to check air pressure. Upon stopping it started to idle roughly and then quit and then not restart until it cooled down. Also we noticed the cruise control did not work. The button light came on but no engagement light on cluster. After getting it started again it ran fine and we drove on, along the way random messages appeared such as stabiilitrak not engaged, service traction control and hood open.

Yesterday I replaced the brake light switch and that fixed the cruise control and message went away. Drove it today at lunch and it idled for awhile and then messages appeared again and now cruise doesn't work again. Can somet help me out. Does this sound like a bad ground somewhere or ??? Thanks all. I appreciate ya.
Russell

 

[Bill 1960]

Stabilitrak and traction control both run off the wheel speed sensors, so that’s likely one problem sensor with two symptoms.

Hit up a parts store and have it scanned for active and stored codes. Post them up. Then you’ll have a lot more information.

 

[wjburken]

We bought a 2007 GMC XL Denali this wknd with 163,000 on Odometer. When test driving it ran fine with no codes or messages other than low tire indicator. On way home from dealership we stopped at gas station to check air pressure. Upon stopping it started to idle roughly and then quit and then not restart until it cooled down. Also we noticed the cruise control did not work. The button light came on but no engagement light on cluster. After getting it started again it ran fine and we drove on, along the way random messages appeared such as stabiilitrak not engaged, service traction control and hood open.

Yesterday I replaced the brake light switch and that fixed the cruise control and message went away. Drove it today at lunch and it idled for awhile and then messages appeared again and now cruise doesn't work again. Can somet help me out. Does this sound like a bad ground somewhere or ??? Thanks all. I appreciate ya.
Russell

Welcome to the forum from Iowa.

Did you happen to see what the codes were that are behind the messages on your DIC?

Need to get to the basics. My suggestion would be to change your plugs and wires just to eliminate those issues. I would also get some MAF cleaner and see if cleaning your MAF sensor helps.

But need the codes to really guide the process.

 

[SDWallhanger]

I do have a code reader and will plug in and see if there are any codes. Thanks, Russell

 

[SDWallhanger]

 

[SDWallhanger]

Took pics of messages and code reader. No codes found.

 

[wjburken]

Took pics of messages and code reader. No codes found.

Does that scanner have the ability to read ABS codes? Not all scanners do.

 

[SDWallhanger]

Does that scanner have the ability to read ABS codes? Not all scanners do.

No, I don't think it does.

 

[SDWallhanger]

No, I don't think it does.

Should I take it to AutoZone and have them try their code reader? What are we looking for?

 

[wjburken]

Should I take it to AutoZone and have them try their code reader? What are we looking for?

Yes. You are looking for ABS/Speed Sensor related codes.