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 Gm Tech (Cam) Your Own Question
Gm Tech (Cam)
Gm Tech (Cam), GMC Mechanic
Category: GMC
Satisfied Customers: 1667
Experience:  GM Grand Master Technician 2007. 14 year experience.
10949255
Type Your GMC Question Here...
Gm Tech (Cam) is online now
A new question is answered every 9 seconds

I have an 02 GMC Sierra. I have put an 04 5.3l in it. I used

Customer Question

I have an 02 GMC Sierra. I have put an 04 5.3l in it. I used the same 4l60e transmission during the engine swap. All is fairly good with it except it just feels like a dog when initially takes off. I did not change anything with the rear end, is that my problem? If so, what should I put in to change this?
Submitted: 2 months ago.
Category: GMC
Expert:  Tims Auto Repair replied 2 months ago.

Hi, My name is ***** ***** for the delay.
I will do my best to assist you.

Expert:  Tims Auto Repair replied 2 months ago.

please explain.

does the engine light stay on?if so,can you give me the computer codes?

does it shift through all 4 gears?

Customer: replied 1 month ago.
Sorry I did not reply. I will complete this transaction
Customer: replied 1 month ago.
The check engine light is on. They are engine codes. P0140, P0171 and P0174. It does shift through all 4 gears.
Expert:  Tims Auto Repair replied 1 month ago.

hi

does it shift only once?

Expert:  Tims Auto Repair replied 1 month ago.

no the rear gear shouldnt have anything to do with this problem

Customer: replied 1 month ago.
No it's shifts kind of hard from 1st to 2nd. But then shifts normally from 2nd to 3rd and then to 4th.
Expert:  Tims Auto Repair replied 1 month ago.

sorry i keep missing you

tell me,,does the engine feel really weak?

no power?

Customer: replied 29 days ago.
Thank you for still responding...it doesn't feel weak just don't think it is accelerating in the first two gears like it should be. The engine winds up awfully loud just don't feel it in acceleration.
Expert:  Tims Auto Repair replied 29 days ago.

so,it seels like the transmission is slipping?

Related GMC Questions