Yukon Denali AWD V8-6.2L (2007)
Control Module: Customer Interest
A/T Controls - DTC P1825/P182E or P1915/MIL ON
Bulletin No.: 08-07-30-020E
Date: March 03, 2010
Subject: Diagnostic Information for MIL Illuminated with DTC P1825, P182E or P1915 Found Current or as History Code in TCM, No PRNDL
Display, Potential No Engine Crank
2006-2009 Cadillac XLR-V
2006-2010 Cadillac STS-V
2007-2009 Cadillac SRX, XLR
2007-2010 Cadillac Escalade, Escalade ESV, Escalade EXT, STS
2008-2010 Cadillac CTS
2009-2010 Cadillac CTS-V
2006-2010 Chevrolet Corvette
2007-2010 Chevrolet Silverado
2008-2010 Chevrolet Suburban
2009-2010 Chevrolet Avalanche, Tahoe
2010 Chevrolet Camaro, Express
2007-2010 GMC Sierra, Yukon Denali, Yukon XL Denali
2008-2010 GMC Yukon XL
2009-2010 GMC Yukon
2010 GMC Savana
2008-2009 Pontiac G8
2008-2009 HUMMER H2
with 6L50 RPO MYB, 6L80 RPO MYC or 6L90 RPO MYD Automatic Transmission
This bulletin is being revised to remove the contact information in Step 4 under HISTORY DTC heading and update the models and model years. Please
discard Corporate Bulletin Number 08-07-30-020D (Section 07 - Transmission).
The following diagnostic information will aid the technician if the MIL is illuminated with DTC P1825, P182E or P1915. The DTC may be found
current or as a history code in the TCM along with a no PRNDL display and the potential for no engine crank.
1. Use the Tech 2(R) to capture and record Freeze Frame/Failure Data for all DTCs set. Review the data to determine:
Vehicle speed, commanded gear, transmission temperature, throttle position, transmission ratio, transmission input and output speed sensor
RPM when DTC set (use to attempt to duplicate failure)
IMS A/B/C/P and IMS state
2. Using the Tech 2(R), navigate to transmission data and scroll down to IMS. With the ignition ON and the engine OFF, observe the IMS A/B/C/P
switch states and IMS states for each shift lever detent position. The chart following this list shows the correct states.
3. If all IMS readings are normal, monitor the PNP status in the engine data list during DTC setting to isolate a possible open or short to ground on
the dedicated PNP signal between the TEHCM and the ECM.
4. If the vehicle is a 2009 CTS, STS or SRX, proceed to Step 5 in the History DTC section below before continuing with any additional evaluations.
5. If all IMS and PNP readings are normal, the condition is intermittent in nature and determination of the defective component will be made based
on freeze frame data and previous repair history or warranty data. Proceed to History DTC below. If the readings are not as specified above, the
fault is still active. Proceed to the Active DTC section below to determine which component(s) is defective.