I have a 1996 Chevy Tahoe. Just put in a new computer system on it. Now the shifting is messed up. What could be causing this? Shifted fine with the old brain before I changed it.

Anand Kumar

• 2035 Answers
• Posted on Jul 03, 2008

SOURCE: Serpentine Belt Diagram for 1996 Chevrolet Tahoe

Use this link:

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528008ef45

SOURCE: A picture of timing chain in a 1996 chevy tahoe

http://www.autozone.com/addVehicleId,2314001/initialAction,repairGuide/shopping/repairGuide.htm?pageId=0900c1528008ef16

SOURCE: 1996 tahoe tranny not shifting

The L60E Tranny's were not Covered under this Recall. Therefore, You should be Just fine with a Cleaning and Reassemby. Just to be Absolutely sure, Check Edmonds.com and Enter your Trucks Make year and Model and it will give you the Recalls, Complaints and Service Bulletins for your Truck. Please Rate My Response! Thanks!

SOURCE: 1996 chevy tahoe fuel system

i am having the same problem with my 96 pickup i am getting low voltage to my fuel pump i have traced the wires back to the front the purpel wire is the one with low voltage i replaced fuel pump also fuel relay and still have low voltage

Harvey N Tawatao

• 3854 Answers
• Posted on Jul 22, 2009

SOURCE: 1996 Tahoe error code P0700 detected at PepBoys

P0140 Oxygen Sensor Circuit No Activity Detected (Bank 1 Sensor 2) P1192 Post-catalyst Fuel Trim System Bank 1

Replace the O2 sensor after the catalytic Converter and check to make sure the wire harness and clips are not damaged. Also check the O2 sensor fuse in the fuse panel to make sure there not blown. 
As for the p0700 code is a generic code and the ECM needs to re-calibrated for the performance upgrade in your transmission. It's common to happen when there are changes like the transmission fluid pressure has been altered which would give it a better and firmer shift, but the transmission reads the higher line pressure as a problem. If you take it to a good transmission shop with a tech2 scanner, the tech2 can change the transmission ECM parameters and that way it will recognize the higher transmission line as a norm. 
Have done a few upgrades on the 4L60E with a common swap of the servo's with a corvette servo's ($45.00) to firm up the shift and raise the transmission line pressure to keep the slipping to a minimal and also bring down the shift points at WOT on the 1st-2nd shift to get going a bit faster (used Tech2 scanner). 
Good luck and keep me posted, be glad to help.