2001 Tahoe Gauge Problem & Transmission Problem HELP!

cpford · 01-25-2006, 11:07 AM

Only part of the cluster is lighting up. When you press the Trip Reset and hold it, the gauges and lights come on, then go back out when you release the button. Takes off in second gear, no overdrive. Just had a new radio, amp, and subs installed but I cannot find anything that is causing this proble. Need help BAD!!! Thanks

horse482 · 01-25-2006, 01:38 PM

I found this tsb, this should fix your problem. http://www.e-toolbox.com/pdf16gr3/068000/067620.pdf

horse482 · 01-25-2006, 04:58 PM

Sorry if that was a bad link, here is the info on your problem:
TSB# 01-07-30-002D

Malfunction Indicator Lamp On, Transmission Stuck in Second or Third Gear, Instrument Cluster Inoperative.

04-05 Rainier
99-00 Escalade
02-05 Escalade and EXT
03-05 ESV
97-99 Chevy/GMC Full Size; Pickup, Suburban, Tahoe (Yukon) (Old Style)
97-05 Blazer (Jimmy), (Bravada), Corvette, Express (Savana), S10 (Sanoma)
99-05 Silverado (Serria) (New Style)
00-05 Suburban, Tahoe, Yukon, Yukon XL
02-05 Avalanche, Trailblazer, EXT, Envoy, XL, XUV
04-05 Colorado/ Canyon
03-05 H2
04-05 GTO
With 4L60-E, 4L65-E, 4L80-E or 4L85-E

Condition: One or more of the following problems:
- The Malfunction Indicator Lamp is on.
- The transmission is defaulted to second gear (4L80/85-E).
- The transmission is defaulted to third gear (4L60/65-E).
- The instrument cluster is inoperative.

Possible DTC’s: P0720, P0753, P0758, P0785, P0787, P0973, P0976, P1860, P2761, P2764, and P2769 may be set depending on the vehicle.

Cause: The most likely cause of this condition may be a loss of voltage to the transmission on circuit 1020. This loss of power may be caused by an open in the ignition switch. This condition my also be the result of an incorrect installation of an aftermarket electronic device such as a remote starter or alarm system.

Correction: With the ignition switch in the RUN position, test for battery voltage at the appropriate fuse listed below.
97 S/T Trans 24
98-05 S/T Cluster 11
02-05 S/T Ignition 0
97-00 C/K(Old) Trans 20
99-05 C/K(New) Ignition 0
97-02 G-Van Trans 20
03-05 G, H-Van Ignition 0
03-05 H2 Ignition 0
04-05 GTO Auto Trans
97-04 Corvette Enging 1
05 Corvette ACC/TCM
04-05 Colorado/Canyon Trans

If the battery voltage is present at the fuse, inspect the ignition voltage circuit between the fuse and the transmission for possible opens. If the battery voltage is not present at the fuse, replace the ignition switch.

If the vehicle is equipped with an aftermarket electronic device and the DTC’s are being set when the device is being used, verify that the appropriate fuse listed above is being supplied battery voltage during operation. If voltage is not present at this fuse, these DTC’s will be set due to lack of voltage at the solenoids. This condition is most likely to occur with an incorrectly installed remote starting system. If this is the case, refer the customer to the installer of they system for corrections.

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