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

96,835

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.

9,875

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

Add photo

Related Questions

Search GMC Safari Questions

GMC Safari Experts

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

Related Models For Sale

Used Chevrolet Astro Cargo Van
11 listings starting at $4,990
Used GMC Savana
3 Great Deals out of 126 listings starting at $15,987
Used Chevrolet Express
3 Great Deals out of 82 listings starting at $5,900
Used GMC Sierra 1500
178 Great Deals out of 9,261 listings starting at $2,995
Used Chevrolet Express Cargo
6 Great Deals out of 345 listings starting at $5,800
Used GMC Savana Cargo
14 Great Deals out of 465 listings starting at $2,488
Used Dodge Grand Caravan
155 Great Deals out of 10,978 listings starting at $500
Used Ford F-150
362 Great Deals out of 9,855 listings starting at $1,500
Used Ford E-Series Wagon
38 listings starting at $500
Used Toyota Tacoma
18 Great Deals out of 792 listings starting at $4,641
Used Ford E-Series Cargo
16 Great Deals out of 149 listings starting at $2,940
Used Chevrolet Tahoe
3 Great Deals out of 542 listings starting at $4,995
Used Dodge Caravan
99 listings

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.