My speedometer and transmission acting funny

Asked by Sep 24, 2016 at 09:59 PM about the 2002 GMC Safari

Question type: Maintenance & Repair

OK here is my problem when I drive my 2002 GM
safari van my speedometer would just go up an
down an the transmission starts to act funny so I
can't drive the freeway but when I take the streets
it's semi okay someone told me change the speed
sensor on the transmission so I did and still having
the same issues can anyone help me PLEASE IM
DYING OVER HERE

2 Answers

98,415

Did you reset the computer after the new part was installed? That needs to be done after parts are replaced so the computer can reset it's programming for a properly functioning part. If after the reset you still have the problem then the system is going to have to be live data scanned so the tech can see what is actually going on with the sensors and the ECM response to those readings. It is possible something else could be out of specs.

10,185

if your torque converter is going this can happen its often called sliping. Also if the trany gears are worn they can slip while they are in motion.

Your Answer

GMC Safari Experts

  • #1
    Deathjam4
    Reputation
    200
  • #2
    T_S_T
    Reputation
    110
  • #3
    dandyoun
    Reputation
    80
View All

Related Models For Sale

Used Chevrolet Astro
6 listings starting at $4,995
Used Chevrolet Astro Cargo Van
6 listings starting at $4,990
Used GMC Savana
140 listings starting at $16,945
Used Chevrolet Express
4 Great Deals out of 64 listings starting at $5,900
Used GMC Savana Cargo
11 Great Deals out of 459 listings starting at $2,995
Used GMC Sierra 1500
226 Great Deals out of 10,358 listings starting at $2,995
Used Ford E-Series Cargo
3 Great Deals out of 118 listings starting at $4,900
Used Toyota Sienna
23 Great Deals out of 1,025 listings starting at $2,500
Used Chevrolet Express Cargo
7 Great Deals out of 321 listings starting at $5,800
Used Honda Odyssey
12 Great Deals out of 942 listings starting at $2,995
Used GMC Yukon
14 Great Deals out of 855 listings starting at $5,950
Used Dodge Grand Caravan
167 Great Deals out of 9,890 listings starting at $2,499
Used Ford F-150
456 Great Deals out of 9,151 listings starting at $922
Used Honda Accord
73 Great Deals out of 1,119 listings starting at $748

Used Cars For Sale

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.