Help Me Please!

[RTPMurph]

This is very time sensitive, i have to get this truck running before Saturday, or it will be towed, and I can't afford that.

It is a '96 GMC Sonoma with a V6..

The alternator ate itself, it was covered in metal flecks.. I replaced that without difficulty.. I tried to start it and I got no power at the key.. none of the interior lights or gauges worked..

I took the battery to the auto parts store and had it charged and checked.. and it was perfectly fine. I reconnected it, and checked the power cables and they were fine.

This truck doesn't have an engine compartment fuse box - so I checked all the driver side door panel box and they were all fine, but I am still not getting any power.

I don't know what the relays in the glove box are for... and I don't know what the 4 relays in the engine compartment near the firewall in the center of the engine compartment are for...

What could be keeping power from the battery to the ignition or to the rest of the truck?

 

[Molson02536]

This is very time sensitive, i have to get this truck running before Saturday, or it will be towed, and I can't afford that.

It is a '96 GMC Sonoma with a V6..

The alternator ate itself, it was covered in metal flecks.. I replaced that without difficulty.. I tried to start it and I got no power at the key.. none of the interior lights or gauges worked..

I took the battery to the auto parts store and had it charged and checked.. and it was perfectly fine. I reconnected it, and checked the power cables and they were fine.

This truck doesn't have an engine compartment fuse box - so I checked all the driver side door panel box and they were all fine, but I am still not getting any power.

I don't know what the relays in the glove box are for... and I don't know what the 4 relays in the engine compartment near the firewall in the center of the engine compartment are for...

What could be keeping power from the battery to the ignition or to the rest of the truck?

Here is some other testing procedures to go through to help isolate your problem.

STARTER -1996 Sonoma


Engine Does Not Crank, Starter Solenoid Does Not Click

1.Place gear selector in Park (A/T), or depress clutch pedal (M/T). Connect test light between starter solenoid terminal
"S" (Purple wire) and ground. Turn ignition switch to START position and observe test light. See Fig. 2 . See WIRING
DIAGRAM. If test light illuminates, go to next step. If test light does not illuminate, go to step 3) (M/T) or step 5) (A/T).

2.Connect test light between starter solenoid terminal "S" (Purple wire) and starter mounting bolts. Turn ignition switch to START position and observe test light. If test light does not illuminate or is dim, clean starter, starter mounting bolts and mounting surface. If test light illuminates, replace starter solenoid.

3.On M/T models, disconnect clutch start switch connector. Turn ignition switch to START position. Using DVOM, measure voltage between clutch start switch connector terminal "C" (Yellow wire) and ground. If voltage is not present, go to step 7). If battery voltage is present, go to next step.

4.Depress clutch pedal, place gear selector in Neutral and apply parking brake. Connect a fused jumper wire between terminals of clutch start switch connector. Turn ignition switch to START position. If engine cranks, adjust or replace clutch start switch. If engine does not crank, repair open in Purple wire
circuit between clutch start switch and starter relay.

5.On A/T models, disconnect park/neutral position switch C1 connector. Turn ignition switch to START position. Using DVOM, measure voltage between park/neutral position switch connector terminal "G" (Yellow wire) and ground. If voltage is not present, go to step 7). If battery voltage is present, go to next step.

6.Connect a fused jumper wire between park/neutral position switch connector terminals "G" (Yellow wire) and "E" (Purple wire). Turn ignition switch to START position. If engine cranks, replace park/neutral position switch. If engine does not crank, repair open in Purple wire circuit between park/neutral position switch and starter relay.

7.On A/T and M/T models, turn ignition switch to START position. Using DVOM, measure voltage between Yellow terminal of ignition switch connector and ground. If voltage is not present, go to next step. If battery voltage is present, repair open in Yellow wire circuit between ignition switch and clutch start switch (M/T) or park/neutral position switch (A/T).

8.Turn ignition switch to START position. Using DVOM, measure voltage between Red wire terminal of ignition switch connector and ground. If battery voltage is present, replace ignition switch. If voltage is not present, go to next step.

9.Using DVOM, measure voltage between Red wire terminal of fusible link "B" at battery junction block and ground. If battery voltage is present, repair open in fusible link "B" or Red wire circuit between fusible link "B" and ignition switch. If voltage is not present, go to next step.

10.Using DVOM, measure voltage between Red wire terminal of alternator BAT terminal and ground. If battery voltage is present, repair open in fusible link "F" or Red wire circuit between fusible link "F" and battery junction block. If voltage is not present, repair open in fusible link "G" or Red wire circuit between fusible link "G" and alternator.

If you think everything is in working order, skip to step #9. Your fusible link will be on your fender, here is a link for you and View B is where your fusible links are to your electrical system to your Sonoma. Good luck and keep me posted.

http://www.compnine.com/largeimg/950322TS02-519.gif

 

[rjbettini]

Here is some other testing procedures to go through to help isolate your problem.

STARTER -1996 Sonoma


Engine Does Not Crank, Starter Solenoid Does Not Click

1.Place gear selector in Park (A/T), or depress clutch pedal (M/T). Connect test light between starter solenoid terminal
"S" (Purple wire) and ground. Turn ignition switch to START position and observe test light. See Fig. 2 . See WIRING
DIAGRAM. If test light illuminates, go to next step. If test light does not illuminate, go to step 3) (M/T) or step 5) (A/T).

2.Connect test light between starter solenoid terminal "S" (Purple wire) and starter mounting bolts. Turn ignition switch to START position and observe test light. If test light does not illuminate or is dim, clean starter, starter mounting bolts and mounting surface. If test light illuminates, replace starter solenoid.

3.On M/T models, disconnect clutch start switch connector. Turn ignition switch to START position. Using DVOM, measure voltage between clutch start switch connector terminal "C" (Yellow wire) and ground. If voltage is not present, go to step 7). If battery voltage is present, go to next step.

4.Depress clutch pedal, place gear selector in Neutral and apply parking brake. Connect a fused jumper wire between terminals of clutch start switch connector. Turn ignition switch to START position. If engine cranks, adjust or replace clutch start switch. If engine does not crank, repair open in Purple wire
circuit between clutch start switch and starter relay.

5.On A/T models, disconnect park/neutral position switch C1 connector. Turn ignition switch to START position. Using DVOM, measure voltage between park/neutral position switch connector terminal "G" (Yellow wire) and ground. If voltage is not present, go to step 7). If battery voltage is present, go to next step.

6.Connect a fused jumper wire between park/neutral position switch connector terminals "G" (Yellow wire) and "E" (Purple wire). Turn ignition switch to START position. If engine cranks, replace park/neutral position switch. If engine does not crank, repair open in Purple wire circuit between park/neutral position switch and starter relay.

7.On A/T and M/T models, turn ignition switch to START position. Using DVOM, measure voltage between Yellow terminal of ignition switch connector and ground. If voltage is not present, go to next step. If battery voltage is present, repair open in Yellow wire circuit between ignition switch and clutch start switch (M/T) or park/neutral position switch (A/T).

8.Turn ignition switch to START position. Using DVOM, measure voltage between Red wire terminal of ignition switch connector and ground. If battery voltage is present, replace ignition switch. If voltage is not present, go to next step.

9.Using DVOM, measure voltage between Red wire terminal of fusible link "B" at battery junction block and ground. If battery voltage is present, repair open in fusible link "B" or Red wire circuit between fusible link "B" and ignition switch. If voltage is not present, go to next step.

10.Using DVOM, measure voltage between Red wire terminal of alternator BAT terminal and ground. If battery voltage is present, repair open in fusible link "F" or Red wire circuit between fusible link "F" and battery junction block. If voltage is not present, repair open in fusible link "G" or Red wire circuit between fusible link "G" and alternator.

If you think everything is in working order, skip to step #9. Your fusible link will be on your fender, here is a link for you and View B is where your fusible links are to your electrical system to your Sonoma. Good luck and keep me posted.

http://www.compnine.com/largeimg/950322TS02-519.gif

would it be the same steps and wire colors to perform this check on a 2004 yukon denalli.