Intermittent No Crank - keywords hard ignition inoperative key lock rotate start starter
| Subject: | Intermittent No Crank |
| Models: | 2007 Cadillac Escalade, ESV, EXT |
| 2007 Chevrolet Avalanche, Silverado, Suburban, Tahoe |
| 2007 GMC Sierra, Yukon, Yukon XL, Yukon Denali, Yukon Denali XL |
This PI was superseded to update Condition/Concern and Recommendation/Instructions, also to add pics. Please discard PIT4319.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment that they experience a no crank condition on full size pickups and utilities built on and after January 2, 2007 through March 16, 2007 . A new designed ignition cylinder was introduced that may not be fully compatible with the ignition lock cylinder case. This may result in a customer believing the truck will not crank due to the effort required for ignition key rotation.
Recommendation/Instructions:
To repair this concern replace the ignition lock cylinder case P/N 26088811. Make sure the new lock cylinder case has the updated gear detent, as shown below. Do not replace ignition switch.
(1) Original
(2) Updated
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.
