battery disconnect problem

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

NotAMechanic

TYF Newbie
Joined
Jan 9, 2012
Posts
1
Reaction score
0
on a 2005 Tahoe;
I disconnected the battery to remove the windshield washer reservoir and after finally getting it all put back together, the vehicle started and ran fine. At least until I drove it. After a short time going down the road the speedometer began to show about 20 mph (?) over what I was doing. After a couple of stops in town and back on the hiway, it began to show WAY over what I was doing. Staying with the flow of traffic which was about 60, I was showing 110 on the speedometer and about 1700 on the tach. At a stop it still showed +/- 55mph speedo & +/-500 on the tach.
The question is do I need to have this vehicle reprogrammed? Or is there something I can do at home to fix this? Everyone that I have mentioned this to says that they have never heard of this. The only oddity that I can think of is the wires for the rear washer pump pulled out of the socket, but I got them put back and the pump works fine when I push the button for the rear washer/wiper control.
Thanks in advance for any help and ideas anyone may have.
 

Mr.Jack

Full Access Member
Joined
Nov 10, 2011
Posts
488
Reaction score
5
Location
Norway
I would have disconnected the battery once more. Let it stay disconnected for minimum 30 minutes. Then reconnect and see if it is back to normal.
 

Rivieraracing

Full Access Member
Joined
May 2, 2009
Posts
3,810
Reaction score
82
Location
Oregon
X2!! Also try tapping on the cluster with your fingers/hand and see if that does anything to help/hurt your problem!!
 

Forum statistics

Threads
133,122
Posts
1,880,214
Members
98,114
Latest member
Weley23
Top