20 Most Recent 2001 Chevrolet Express - Page 9 Questions & Answers

I used to visit this website a no. of times for the repair of my cars but I think they have manual or you could directly email to them regarding it. Here's the link https://big-manuals.com

Partstore knows

Most current automatic transmissions will be put into a "limp" mode if the electronics detect a fault in the transmission. That is, the transmission will go into one gear (usually second or third depending on how many speed ranges the transmission has) and allow you to drive it slowly to a service department or transmission shop. The intent is to prevent further damage by continuing to drive with the problem. It's possible the problem is relatively minor and inexpensive to repair, but continuing to drive it will almost certainly cause more damage (and be more expensive) to repair.

You should go to www.reliable-store.com they have got books on every vehicle and also how to service/repair it, parts info, fuse box, gear box, wiring diagrams, electrical diagrams, fuse diagrams, error codes, etc everything

If you can rap the fuel tank on the bottom and the car starts, it's almost a guarantee that it's your fuel pump. You have to get it replaced. Your luck at the little rapping trick runs out after awhile.

seems like the multi-function switch is failing easy to replace and fairly common

I don't use synthetic oil unless the owners manual requires it. Just my opinion, not trying to argue. I've been changing my own oil and filter ever since my first car, now I'm 70. Check for proper oil pressure and oil fill level.

check cables or low battery

MAF is ALWAYS in the air duct between the air filter and throttle body. Remove the clamps. Replace MAF. Reinstall air duct and clamps

Have someone open the gas tank door and listen for a zooming sound as you turn the key to the on position (NOT CRANKING POSITION), If no sound, check the fuel pump fuse relays in the fuse box in the vehicle and under the hood. Also check the connections at the gas tank and the ground strap at the gas tank.

Review this information, maybe I need two or more post to send you the Wiring Diagrams.

Good luck... and remember rated this help.

1999 CHEVROLET TRUCK EXPRESS VAN - REPAIR GUIDE
Exterior Lights


Fig. 1 Hazard, Turn and Stop Lamp Signals(c)


Fig. 2 Headlamp and Panel Dimmer Switch Signals and Park Lamp Relay Control(c)


Fig. 3 Park/Turn, Marker, Tail/Stop and Backup Lamps - Except Cutaway(c)

Fig. 4 Stop and License Lamps(c)

Fig. 6 Trailer Wiring(c)

Fig. 7 Turn Signals(c)

Good luck!!!

Follow the link to read about this code and what causes it. U0109 Lost Communication with Fuel Pump Control Module FPCM eval ez write...

Autozone.com has diagrams for this model: http://www.autozone.com/repairinfo/repairguide/repairGuideContent.jsp?pageId=0900c1528004d7c3