Transmission not shifting

Asked by Feb 23, 2016 at 09:11 PM about the 2007 Chevrolet Suburban LTZ 1500 4WD

Question type: Maintenance & Repair

Starting from a stop car is at 20 mph and rpms are bt 3/4.  
In order for it to shift I have to back off the gas down to 2
mph. Then it will shift but not into 2nd shift. Running 55
mph with 4rpms and in 1st shift.  Changed transmission
fluids still n the same nothing in fluids.  Has 230000 miles.
Transfer case we did have to do a weld bc of a small whole
and leaking oil on the back of the truck.
Would the t case have something to do or is it something
else?
Oh and NO check engine light. Even had it tested to see if
the light was burned out.

3 Answers

21,120

The only thing you can try now is add some Lucas Transmission Stop Slip or there are other products that say they can fix transmission problems but I have used Lucas before and it worked for me. Do not over fill transmission remove same amount of fluid as bottle of product. If this does not work time to get some transmission work done.

Transmission, most likely. With those miles and weight of the vehicle its tired, salvage tested trans would be my choice.

24,965

I'm sorry to tell you this, but, not shifting from 1st to 2nd is a classic transmission problem, very typical. If you're lucky, it could just be a bad speed sensor. Look that up, and check that out. I had a bad speed sensor on my 1995 Honda Accord and it didn't shift properly, but, it was not the transmission. Good luck.

Your Answer

Suburban

Looking for a Used Suburban in your area?

CarGurus has 23,493 nationwide Suburban listings starting at $1,995.

ZIP:

Chevrolet Suburban Experts

  • #1
    Andrew Olsen
    Reputation
    1,100
  • #2
    Neal Turner
    Reputation
    1,020
  • #3
    Eric Fritz
    Reputation
    1,010
View All

Related Models For Sale

Used GMC Yukon XL
298 Great Deals out of 13,400 listings starting at $2,695
Used Chevrolet Tahoe
852 Great Deals out of 40,104 listings starting at $1,900
Used GMC Yukon
521 Great Deals out of 19,573 listings starting at $1,995
Used Ford Expedition
489 Great Deals out of 20,186 listings starting at $1,500
Used Cadillac Escalade ESV
151 Great Deals out of 6,350 listings starting at $1,995
Used Chevrolet Silverado 1500
2,811 Great Deals out of 158,490 listings starting at $1,000
Used Cadillac Escalade
282 Great Deals out of 12,189 listings starting at $2,995
Used Chevrolet Silverado 2500HD
428 Great Deals out of 31,576 listings starting at $2,500
Used Ford F-150
3,153 Great Deals out of 231,777 listings starting at $1,300
Used Toyota Sequoia
115 Great Deals out of 4,998 listings starting at $2,499
Used Lincoln Navigator
95 Great Deals out of 3,626 listings starting at $2,299
Used Dodge Durango
282 Great Deals out of 25,052 listings starting at $1,500
Used Ford Explorer
1,154 Great Deals out of 68,496 listings starting at $1,200
Used GMC Sierra 1500
1,176 Great Deals out of 62,310 listings starting at $1,995

Used Cars For Sale

2016 Chevrolet Suburban LTZ 1500 4WD For Sale
482 listings starting at $33,587
2015 Chevrolet Suburban LTZ 1500 4WD For Sale
14 Great Deals out of 779 listings starting at $29,855
2014 Chevrolet Suburban LTZ 1500 4WD For Sale
6 Great Deals out of 158 listings starting at $17,993

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.