2003 tahoe no crank no start

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.

nonickatall

Full Access Member
Joined
Nov 19, 2022
Posts
711
Reaction score
1,299
Location
Germany
proceed logically first.

Identify the relay for the starter and measure with a multimeter on the starter relay socket whether there is power when you try to start the ignition switch.

If there is no power, you have a problem with the immobilizer, the ignition lock, the ECM or whatever.

If there is power there but, not at the starter motor, you have a problem with the relay, the starter motor, ground points or something else.

Check that first and let us know what the result is.
 

strutaeng

Full Access Member
Joined
Aug 10, 2023
Posts
1,178
Reaction score
2,444
Location
Dallas, Texas
I've seen those test relays with manual switches. Basically, remove the regular delay and plug the test relay, hit the switch and it should energize the circuit. Probably an overkill for a DIYer, but eliminates the switch side of the circuit very easily and fast.

Lisle makes a master relay kit, but spendy. I think Amazon may sell the knock-off versions individually.

Does anyone know the relay type on these trucks? There's only like 2 types, right?
 

Forum statistics

Threads
132,307
Posts
1,865,717
Members
96,896
Latest member
grass209
Top