NHTSA ID Number: 10154280
Manufacturer Communication Number: PIT5391E
TSB/Document Date: 2019-03-11
Summary
This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that have a no crank or a start and then immediate stall, Service Engine Soon Malfunction Indicator lamp may not be on when the ignition is in the run position. Technician may find Diagnostic Trouble Codes P0513 and or P262B may also be set. Technician will pulled the driver sill plate and inspect the wiring for damaged or corroded circuits. Technician will repair any damaged or corroded circuits.
Bulletin No.: PIT5391E
Published date: 02/8/2019
Preliminary Information
PIT5391E No Crank / Start then Immediate Stall / SES MIL / Service
4WD / Relay Clicking / Rearview Camera Inop / DTC (Inspect
Ignition 1 voltage)
Models
Brand:
Model:
Model Years:
VIN:
from
to
Transmissions:
Escalade Models
2015 - 2019
All
All
All
All
Silverado 1500
2014
All
All
All
All
Silverado
2015 - 2018
All
All
All
All
Silverado LD
2019
All
All
All
All
Silverado 2500/3500
2019
All
All
All
All
Suburban
2015 - 2019
All
All
All
All
Tahoe
2015 - 2019
All
All
All
All
Sierra 1500
2014
All
All
All
All
Sierra
2015 - 2018
All
All
All
All
Sierra Limited
2019
All
All
All
All
Sierra 2500/3500
2019
All
All
All
All
Yukon Models
2015 - 2019
All
All
All
All
Supersession Statement
This PI was superseded to add the 2019 model year and update the recommendation section. Please discard
PIT5391D.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition / Concern
Some owners may comment of any of the following symptoms:
- No crank or a start then immediate stall
- SES MIL may not be on when the ignition is in the Run position
- Any of the following DTC's may be set: B1370, B1325, P0650, P263A, P263B, P0513, P129D,
P2535, and/or P0262B
- Trucks equipped with 4WD may have a Service 4WD message and DTC's C0364 and/or
U0403 may set
- The sound of a relay clicking while driving
- Rearview camera inoperative when the vehicle is shifted into reverse
- Engine stays running with ignition off until door is opened
(NOTE: This symptom is not caused by a loss of ignition 1 voltage, but a loss of ground to the
Ignition Main Relay)
These concerns could be caused by a loss of ignition 1 voltage. There are two KR73 Ignition
Main Relays, one located in the Underhood Fuse Block-X50A, and the other in the Left I/P
Fuse Block-X51L, that both provide power to several different fuses:
Example wiring diagram for the KR73 Ignition Main Relays and fuses:
Pickup's - Document ID: 3619755
SUV's - Document ID: 4079484
The loss of ignition 1 voltage may be caused by:
-Either or both KR73 Ignition Main Relays not turning on to provide power to their
respectable fuses.
-Terminal issues at a fuse block connector where the Ignition 1 circuits exit the fuse block,
example Document ID: 4232460, circuit 439 at the Underhood Fuse Block connector X2
terminal M7. In these situations, the KR73 Ignition Main Relays are turning on and providing
power to their respective Ignition 1 fuses, but there will be no Ignition 1 power to their
respective module/component, due to the terminal issue at the fuse block.
Recommendations / Instructions
The following are common areas for these concerns:
1. Inspect ALL the Underhood Fuse Block-X50A connectors for any backed out terminals,
poor terminal fit and/or bent/twisted terminals.
The most common terminals with these issues have been:
-Terminal M5 at connector X4, for circuit 5199
-Terminal M7, A2 or A3 at connector X2 for circuit 439 (Depending on model and year, circuit
439 can vary in terminal location. Refer to SI for your vehicle)
2. Inspect for any backed out terminals, poor terminal fit and/or bent/twisted terminals at
the Left I/P Fuse Block-X51L.
The most common terminals with these issues have been:
-Terminal 42 at connector X1, for circuit 5199
-Terminal 44 at connector X2, for circuit 1850
3. Circuit 5199 under the driver's sill plate for being damaged/corroded, as shown below.
Repair any wiring / terminal issues using the appropriate SI wiring repair documentation.
Warranty Information
Please refer to latest version of bulletin 10-00-89-005 for warranty information on
wire/connector repairs.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is
resolved without completing every step, the remaining steps do not need to be performed.
© 2019 General Motors
. All Rights Reserved.
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TSB/Document ID: PIT5391E
Replacement Service Bulletin Number:
MFR Communication Date: 2019-02-08
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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