How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Roy Belding Your Own Question
Roy Belding
Roy Belding, ASE Certified Technician
Category: Pontiac
Satisfied Customers: 5718
Experience:  Master ASE since 1980
Type Your Pontiac Question Here...
Roy Belding is online now
A new question is answered every 9 seconds

I changed the alternator on my Pontiac Grand Prix & now I

Customer Question

I changed the alternator on my Pontiac Grand Prix & now I only have heat blowing on drivers side of car , seems to have happened since I disconnected battery , how do I fix this ?
JA: Have you checked the coolant level? Has there been any leaking from the hoses?
Customer: It's blowing fine on passengers side it's to do with the blend door
JA: What year is your Grand Prix?
Customer: 1998
JA: Are you fixing your Grand Prix yourself? What have you tried so far?
Customer: Yes I tried pulling fuse to reset but didn't work
JA: Anything else you want the mechanic to know before I connect you?
Customer: They say there's a program code to reset blend doors but I don't know what it is ?
Submitted: 10 months ago.
Category: Pontiac
Expert:  Roy Belding replied 10 months ago.

good afternoon my name is ***** ***** I will assist

I see no re set procedure for the earlier models.

when I replace these. I cycle the key 3 times to set them in the correct position. have you tried this???


Customer: replied 10 months ago.
I tried cycling the key 3 times but it didn't work!!
Customer: replied 10 months ago.
I think the blend door motor may have failed on the drivers side maybe ?
Expert:  Roy Belding replied 10 months ago.

I agree. I would replace it and see if that takes care of it.

you can get it at a parts store. there are very common


Expert:  Roy Belding replied 10 months ago.

please dont forget to rate me as it is the only way I get paid for my efforts