2000 Impala 3 problems at same time.

2000 Impala Heater fan speeds, Defogger and Information Center won't work when i first start my Car, yet after driving for a number of minutes it all will start working as i'm driving. Only lately starting doing this. Any ideas what could be causing this? Thanks....:confused:

I just resolved the same issue. We had a problem with the blower not coming on, cruise control not working, and the overhead display not on until several minutes after driving.

We took it to the dealership and it was the ignition switch. They replaced the switch and now everything works perfectly. Cost me $525 after tax including the diagnosis.

I just resolved the same issue. We had a problem with the blower not coming on, cruise control not working, and the overhead display not on until several minutes after driving.

We took it to the dealership and it was the ignition switch. They replaced the switch and now everything works perfectly. Cost me $525 after tax including the diagnosis.
Thanks for letting me know. Could very well be the same problem with mine. Would there be a code # show up an electronic diagnostic tool for that?

Not many codes for a ign switch problem.
But may set codes for other prioblems.
Do you have any codes?
If so post back code no.
Best test for ign switch is a good volt/ohm meter and check for proper ign switch power to everything.

Not many codes for a ign switch problem.
But may set codes for other prioblems.
Do you have any codes?
If so post back code no.
Best test for ign switch is a good volt/ohm meter and check for proper ign switch power to everything.

The only codes i have are in the Haynes repair manual i have on my Impala. Ignition Control Circuit codes 41 & 42 Timing Circuit error and Bypass error. I don't have a diagnostic tool to check for these codes at this time, but i have seen these tools on sale at Walmart and Canadian Tire here at times. Might consider buying one next time a sale appears in one of their flyers.

41 and 42 are OBD1 codes for older modles up to 95.
Most parts places will read codes free for you.
Got a Auto Zone close to you?
But as said to check ign switch get outthe old volt/ohm meter.

41 and 42 are OBD1 codes for older modles up to 95.
Most parts places will read codes free for you.
Got a Auto Zone close to you?
But as said to check ign switch get outthe old volt/ohm meter.

Thanks for the info.

Took the Dash apart in my 2000 Impala and checked the plug ins on the Ignition switch. Pulled on each wire for a broken wire. Unplugged the connectors then checked out the contacts and plugged them back in. Everything has been working great since, so i put everything back as it was. KNOCK ON WOOD for good luck!:lol:

May have had a bad connection.
Good Luck

May have had a bad connection.
Good Luck
Same problem has started again. Looks like i'm going to have to get that ignition switch afterall.

Same problem has started again. Looks like i'm going to have to get that ignition switch afterall.

Best to test it with a volt/ohm meter first.
Good Luck
And let us know how it goes.

Best to test it with a volt/ohm meter first.
Good Luck
And let us know how it goes.

Seems like the two bolts which hold the ignition in place were loose. After i tightened them all has worked properly since.

Seems like the two bolts which hold the ignition in place were loose. After i tightened them all has worked properly since.

Thanks for posting back how it went.

It ignition switch housing is a very common problem with GM cars. The spring tension on the contacts weaken resulting in high resistance (voltage drop) across the contacts. I repaired my ignition switch by prying off the black plastic cover (on the back of switch) exposing the contacts. I then use a 1/4" long #4-40 size nut & bolt to hold the contacts and spring together. It's now better than it was when new.

I've replaced several Impala ign switches for intermittent starting and dash display,a/c control issues. Probably not the best engineered switch out there. But usually what I see is key chains with about 5 pounds of junk on 'em swinging back and forth over the years. A friggin deadbolt wouldnt stand up to that! My wifes key chain practicaly drags on the mat! :rofl: