Problems after jump starting another car

CBEAM67

MEMBER
2007 CHEVROLET COBALT
4 CYL
FWD
AUTOMATIC
63,000 MILES

After jumping another car my car's transmission will not shift into third gear. And the speedometer does not work either

Sunday, February 14th, 2010 AT 4:10 PM

4 Replies

BASSTECH

MEMBER
236 POSTS

The ground wire from pcm (the aluminum part closest to the fuse box not the larger pcm case) to a screw or nut perces to bare metal its amazingly easy fix!

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Monday, February 15th, 2010 AT 4:38 PM

SKATRIPP

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1 POST

Great info I found the problem all fixed now I love this site.

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Monday, March 14th, 2011 AT 11:40 PM

CGOR

MEMBER
1 POST
2007 CHEVROLET COBALT
4 CYL
2WD
AUTOMATIC
42,000 MILES

Jumped battery off. Now check engine light is on and transmission is stuck in 1st gear. Thanks.

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Monday, March 11th, 2019 AT 5:04 PM (Merged)

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

If the check engine light is on, you need to have it scanned to see what trouble code is stored in the computer. Most nationally recognized parts stores will do it for free. Chances are there is a problem with the vehicle speed sensor (VSS). Why it happened when you jumped it is hard to tell. Regardless, have the computer scanned for codes and it should identify where the problem is.

Let me know if you have other questions.

Joe

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Monday, March 11th, 2019 AT 5:04 PM (Merged)