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2002 chevy suburban ignition switch problem, help!

Alex c

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Alex c New Member

Alex c

Posted
Posted

Hi guys,

 

I'm leaving out of town this weekend and desperately need to get my suburban fixed. I have a 2002 chevy suburban 1500 4x4 5.3v8 z71, and recently the check engine light came on and the car started driving very sluggish, almost like it was starting out in 2nd gear and felt like it had no power. I hooked up a code reader and found the following codes:

P0740 tcc ckt malfunction

P0785 shift/timing sol malfunction

P1860 tcc sol cntrl ckt

P0463 fuel level sensor a ckt high input - I think this might have to do with fuel guage not working properly when I put new fuel pump in so I'm not worried about this.

 

I looked it up on identifix and everything said ignition switch failure. I got a new ignition switch and put it in today and now I'm having issues with the dash not lighting up (all the lights work but the radio, gauges, tach, D,2,3,4,R, don't work). It also will not start anymore. It turns over and tries to fire up but won't actually run and stay running. I was thinking it was a passlock security issues so I tried waiting 15 mins, etc and still can't get it to start. Then, intermitently, the dash lights and tach, etc started working for about 10 minutes but then went off again. I've double checked every fuse under the hood and in the drivers side panel and don't see anything that looks blown. When I pulled the old ignition switch out, I noticed the white wire going into the gear case that meshes with the lock cylinder was broken, so I figured that was why I was having the ignition switch issue. Before I replaced the ignition switch the car would start fine, and now it won't start with the new one. I have a 10 year old optima yellow top battery in it that has always worked like a charm and I even tried jumping it and still couldn't get it to start.

 

Any help would be greatly appreciated as I need to get going this Friday!

 

Thanks!

gmtech4 Senior Enthusiast

gmtech4

Posted
Posted

stop doing this yourself ,identi@#$%itup has led you astray ,,,,those codes have to be diagnosed by a tech not a TRUCK owner ,,,you do not have a CAR ,,,,lord help me

 

take it in ,you cant do this ,,,you've guessed enough

Duelin Enthusiast

Duelin

Posted
Posted

stop doing this yourself ,identi@#$%itup has led you astray ,,,,those codes have to be diagnosed by a tech not a TRUCK owner ,,,you do not have a CAR ,,,,lord help me

 

take it in ,you cant do this ,,,you've guessed enough

I agree with taking it in unless you are a transmission tech. Sound like the converter is staying locked up. Which can be cause by a bad solenoid a blocked passage an electrical short or a bad computer. So unless you have the knowledge and the diag. equipment to trouble shoot and fix it I would say take it in. Also I always recommend trying to find the best tech and shop you can find. Usually if you go cheap it cost you more by the time it is fixed.

 

 

Good Luck

Alex c New Member

Alex c

Posted
  • Author
Posted

Found a wire loose in the old ignition switch and soldered it back on now the old switch works again however my gauges and radio light up but don't work. Weird. Any ideas?

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