20 Most Recent
2015 Chevrolet Tahoe Questions & Answers
How do I program a BCM on a 2015 Chevy Tahoe LT?
Larry provides a great answer as always. And yes, the pro grade scan tool computers are $3,500 to $5,000 plus a considerable investment in time to learn.
- Larry Ng
- Dec 29, 2022
2003 car is not like 2015, not by a mile.
the modules are all married, IMMO is serious
you can just replace it,
you will never like the price of the tools to do that, thousands.
so ask what it costs to do it.
then ask others how much they charge or the dealer. it is not PnP plug and play part.
most cars the PCM,.BCM and cluster and IMMO are married as one, (dealer only)
not told 1 BCM failure
is one output dead, that line is shorted?
did you know BCM have smart output regulators
that shut off if shorted and self reset when say a shorted lamp is replaced!
they sure do. ask how to diagnose BCM
BY DESIGN and can save life 80MPH and dead lamps wake up on the fly, imagine that.
or post a real problem
was your BCM stolen? yes there always is a story, some are tragic.
To repair the BCM or any control module for that matter, they have to be reprogrammed which means that a dealer or some specialist must be one to complete the task because they monitor the security codes that enable reprogramming of these systems.
one thing not to do is this,
many new cars, the married set sees you trying top hack in wrong BCM, it will reset the the IMMO to dead. not you just caused a 2nd very expensive problem to fix.
do no tread 2002 post read only 2014 for Tahoe
or get led down the prim rose path to H3LL.
on some if it sees 7 keys wrong tried,
it bricks the set.
sorry they make the rules not me and ever newer year is more strict.
why not call local shop (real) not some hacker
and ask for BCM programming services on THIS CAR. do so and not make it worse. OKAY?
..
How to fix my 2001 Chevy Tahoe tow/haul keeps coming on when not pushed. If I leave it unattended will it cause my transmission problems cause I just had to replace it
Tow/haul mode enables the operator to achieve enhanced shift performance when towing or hauling a load. When tow/haul mode is selected, the tow/haul switch input signal to the body control module (BCM) is momentarily toggled to zero volts. This signals the powertrain control module (PCM) to extend the length of time between upshifts and increase transmission line pressure. Cycling the tow/haul switch again disables tow/haul mode and returns the transmission to a normal shift pattern.
Would't trust it , take an have DTC'S - diagnostic trouble codes checked by a qualified repair shop with a factory or professional scan tool . Auto part stores can not check BCM code's .
DTC B2722
Tow/Haul Switch/Indicator Always On or Inoperative
Step
Action
Value(s)
Yes
No
1
Install a Scan Tool .
Turn ON the ignition, with the engine OFF.
Cycle the tow/haul switch while observing Tow/Haul Mode on the Scan Tool .
Does the Scan Tool display Active when the switch is first pressed, and then Inactive when the switch is pressed again?
--
Go to Intermittent Conditions in Engine Controls - 4.3 L or Intermittent Conditions in Engine Controls - 4.8 L, 5.3 L and 6.0 L
Go to Step 2
Have a 1999 Chevy Tahoe
If you have a 12 volt test light check for power at the horn connector while having someone push the button... more than likely the horn is just dead.
On my 2003 Tahoe How do I reset or repair instrument cluster reading after replacement with reman part
well it is married to the PCM
and the alien cluster is not allowed
the cure is at the dealer. ,THE RE_marriage. magic,
all modern cars, even the odometer is blocked, for this
so hacker can not hack the odometer miles
remember the old'n days as seller jacked up rear of car
run it in reverse for a week rolling back the ODOM
well this has progressively gotten more strict ( the marriage stuff)
our service manual no read RTM is why you do not know this.
a brave new world this is. (wish I can find a 1975 car) all are now stinking lowriders.(trash )
Will a 1990 chevy 1500
yes it will as long as it is the same model transmission. As long as you get a transmission out of a standard cab truck you should be ok. ( for a good idea Most 88-98 gm trucks, full size blazers,jimmys,tahoes, and yukons will interchange) same chassis just different bodys and emblems
97 Chevy Tahoe has spark and gas but wont start. I
I had same problem on my 97 tahoe shut off while driving and wouldnt start only turned over. checked everything and when i replaced ignition module started right up no problem. Hope this helped and saved ya money
Ebcm motor relay circuit problum
Motor relay circuit this is for the ABS, you will need ot restore the third eye brake light and check fuse in the engine junction fuse box, (cigarette lighter fuse) make sure it didnt open
Not finding what you are looking for?